Silicon: A trace element that constitutes about 27.6% of the earth's crust in the form of SILICON DIOXIDE. It does not occur free in nature. Silicon has the atomic symbol Si, atomic number 14, and atomic weight [28.084; 28.086].Nanoparticles: Nanometer-sized particles that are nanoscale in three dimensions. They include nanocrystaline materials; NANOCAPSULES; METAL NANOPARTICLES; DENDRIMERS, and QUANTUM DOTS. The uses of nanoparticles include DRUG DELIVERY SYSTEMS and cancer targeting and imaging.Silicon Compounds: Inorganic compounds that contain silicon as an integral part of the molecule.Magnetite Nanoparticles: Synthesized magnetic particles under 100 nanometers possessing many biomedical applications including DRUG DELIVERY SYSTEMS and CONTRAST AGENTS. The particles are usually coated with a variety of polymeric compounds.Silicon Dioxide: Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid.Particle Size: Relating to the size of solids.Nanotechnology: The development and use of techniques to study physical phenomena and construct structures in the nanoscale size range or smaller.Gold: A yellow metallic element with the atomic symbol Au, atomic number 79, and atomic weight 197. It is used in jewelry, goldplating of other metals, as currency, and in dental restoration. Many of its clinical applications, such as ANTIRHEUMATIC AGENTS, are in the form of its salts.Silver: Silver. An element with the atomic symbol Ag, atomic number 47, and atomic weight 107.87. It is a soft metal that is used medically in surgical instruments, dental prostheses, and alloys. Long-continued use of silver salts can lead to a form of poisoning known as ARGYRIA.Carbon Compounds, Inorganic: Inorganic compounds that contain carbon as an integral part of the molecule but are not derived from hydrocarbons.Drug Carriers: Forms to which substances are incorporated to improve the delivery and the effectiveness of drugs. Drug carriers are used in drug-delivery systems such as the controlled-release technology to prolong in vivo drug actions, decrease drug metabolism, and reduce drug toxicity. Carriers are also used in designs to increase the effectiveness of drug delivery to the target sites of pharmacological actions. Liposomes, albumin microspheres, soluble synthetic polymers, DNA complexes, protein-drug conjugates, and carrier erythrocytes among others have been employed as biodegradable drug carriers.Nanostructures: Materials which have structured components with at least one dimension in the range of 1 to 100 nanometers. These include NANOCOMPOSITES; NANOPARTICLES; NANOTUBES; and NANOWIRES.Nanowires: Nanometer-scale wires made of materials that conduct electricity. They can be coated with molecules such as antibodies that will bind to proteins and other substances.Nanomedicine: The branch of medicine concerned with the application of NANOTECHNOLOGY to the prevention and treatment of disease. It involves the monitoring, repair, construction, and control of human biological systems at the molecular level, using engineered nanodevices and NANOSTRUCTURES. (From Freitas Jr., Nanomedicine, vol 1, 1999).Drug Delivery Systems: Systems for the delivery of drugs to target sites of pharmacological actions. Technologies employed include those concerning drug preparation, route of administration, site targeting, metabolism, and toxicity.Nanocapsules: Nanometer-sized, hollow, spherically-shaped objects that can be utilized to encapsulate small amounts of pharmaceuticals, enzymes, or other catalysts (Glossary of Biotechnology and Nanobiotechnology, 4th ed).Polyglycolic Acid: A biocompatible polymer used as a surgical suture material.Surface Properties: Characteristics or attributes of the outer boundaries of objects, including molecules.Microscopy, Electron, Transmission: Electron microscopy in which the ELECTRONS or their reaction products that pass down through the specimen are imaged below the plane of the specimen.Chitosan: Deacetylated CHITIN, a linear polysaccharide of deacetylated beta-1,4-D-glucosamine. It is used in HYDROGEL and to treat WOUNDS.Ferric Compounds: Inorganic or organic compounds containing trivalent iron.Semiconductors: Materials that have a limited and usually variable electrical conductivity. They are particularly useful for the production of solid-state electronic devices.Porosity: Condition of having pores or open spaces. This often refers to bones, bone implants, or bone cements, but can refer to the porous state of any solid substance.Polymers: Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).Zinc Oxide: A mild astringent and topical protectant with some antiseptic action. It is also used in bandages, pastes, ointments, dental cements, and as a sunblock.Magnetics: The study of MAGNETIC PHENOMENA.Green Chemistry Technology: Pollution prevention through the design of effective chemical products that have low or no toxicity and use of chemical processes that reduce or eliminate the use and generation of hazardous substances.Materials Testing: The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.Organosilicon Compounds: Organic compounds that contain silicon as an integral part of the molecule.Research Personnel: Those individuals engaged in research.Biosensing Techniques: Any of a variety of procedures which use biomolecular probes to measure the presence or concentration of biological molecules, biological structures, microorganisms, etc., by translating a biochemical interaction at the probe surface into a quantifiable physical signal.Nanoconjugates: Tailored macromolecules harboring covalently-bound biologically active modules that target specific tissues and cells. The active modules or functional groups can include drugs, prodrugs, antibodies, and oligonucleotides, which can act synergistically and be multitargeting.Microscopy, Electron, Scanning: Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY.Cerium: An element of the rare earth family of metals. It has the atomic symbol Ce, atomic number 58, and atomic weight 140.12. Cerium is a malleable metal used in industrial applications.Polyethylene Glycols: Polymers of ETHYLENE OXIDE and water, and their ethers. They vary in consistency from liquid to solid depending on the molecular weight indicated by a number following the name. They are used as SURFACTANTS, dispersing agents, solvents, ointment and suppository bases, vehicles, and tablet excipients. Some specific groups are NONOXYNOLS, OCTOXYNOLS, and POLOXAMERS.Quantum Dots: Nanometer sized fragments of semiconductor crystalline material which emit PHOTONS. The wavelength is based on the quantum confinement size of the dot. They can be embedded in MICROBEADS for high throughput ANALYTICAL CHEMISTRY TECHNIQUES.Silanes: Compounds similar to hydrocarbons in which a tetravalent silicon atom replaces the carbon atom. They are very reactive, ignite in air, and form useful derivatives.Titanium: A dark-gray, metallic element of widespread distribution but occurring in small amounts; atomic number, 22; atomic weight, 47.90; symbol, Ti; specific gravity, 4.5; used for fixation of fractures. (Dorland, 28th ed)Transistors, Electronic: Electrical devices that are composed of semiconductor material, with at least three connections to an external electronic circuit. They are used to amplify electrical signals, detect signals, or as switches.Ferrosoferric Oxide: Iron (II,III) oxide (Fe3O4). It is a black ore of IRON that forms opaque crystals and exerts strong magnetism.Germanium: A rare metal element with a blue-gray appearance and atomic symbol Ge, atomic number 32, and atomic weight 72.63.Biocompatible Materials: Synthetic or natural materials, other than DRUGS, that are used to replace or repair any body TISSUES or bodily function.Polyglactin 910: A polyester used for absorbable sutures & surgical mesh, especially in ophthalmic surgery. 2-Hydroxy-propanoic acid polymer with polymerized hydroxyacetic acid, which forms 3,6-dimethyl-1,4-dioxane-dione polymer with 1,4-dioxane-2,5-dione copolymer of molecular weight about 80,000 daltons.Electronics: The study, control, and application of the conduction of ELECTRICITY through gases or vacuum, or through semiconducting or conducting materials. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Polystyrenes: Polymerized forms of styrene used as a biocompatible material, especially in dentistry. They are thermoplastic and are used as insulators, for injection molding and casting, as sheets, plates, rods, rigid forms and beads.Solar Energy: Energy transmitted from the sun in the form of electromagnetic radiation.Silicic Acid: A hydrated form of silicon dioxide. It is commonly used in the manufacture of TOOTHPASTES and as a stationary phase for CHROMATOGRAPHY.Calcifying Nanoparticles: Protein-mineral complexes that comprise substrates needed for the normal calcium-carbonate-phosphate homeostasis. Nanobacteria was the prior name for the particles which were originally thought to be microorganisms.Nanocomposites: Nanometer-scale composite structures composed of organic molecules intimately incorporated with inorganic molecules. (Glossary of Biotechnology and Nanobiotechology Terms, 4th ed)Equipment Design: Methods of creating machines and devices.Drug Compounding: The preparation, mixing, and assembling of a drug. (From Remington, The Science and Practice of Pharmacy, 19th ed, p1814)Lactic Acid: A normal intermediate in the fermentation (oxidation, metabolism) of sugar. The concentrated form is used internally to prevent gastrointestinal fermentation. (From Stedman, 26th ed)Cadmium Compounds: Inorganic compounds that contain cadmium as an integral part of the molecule.Cell Line, Tumor: A cell line derived from cultured tumor cells.Magnetic Fields: Areas of attractive or repulsive force surrounding MAGNETS.Nanotubes: Nanometer-sized tubes composed of various substances including carbon (CARBON NANOTUBES), boron nitride, or nickel vanadate.Coated Materials, Biocompatible: Biocompatible materials usually used in dental and bone implants that enhance biologic fixation, thereby increasing the bond strength between the coated material and bone, and minimize possible biological effects that may result from the implant itself.Nanospheres: Spherical particles of nanometer dimensions.Microtechnology: Manufacturing technology for making microscopic devices in the micrometer range (typically 1-100 micrometers), such as integrated circuits or MEMS. The process usually involves replication and parallel fabrication of hundreds or millions of identical structures using various thin film deposition techniques and carried out in environmentally-controlled clean rooms.Colloids: Two-phase systems in which one is uniformly dispersed in another as particles small enough so they cannot be filtered or will not settle out. The dispersing or continuous phase or medium envelops the particles of the discontinuous phase. All three states of matter can form colloids among each other.Cell Survival: The span of viability of a cell characterized by the capacity to perform certain functions such as metabolism, growth, reproduction, some form of responsiveness, and adaptability.Spectroscopy, Fourier Transform Infrared: A spectroscopic technique in which a range of wavelengths is presented simultaneously with an interferometer and the spectrum is mathematically derived from the pattern thus obtained.Chemistry, Pharmaceutical: Chemistry dealing with the composition and preparation of agents having PHARMACOLOGIC ACTIONS or diagnostic use.Molecular Imaging: The use of molecularly targeted imaging probes to localize and/or monitor biochemical and cellular processes via various imaging modalities that include RADIONUCLIDE IMAGING; ULTRASONOGRAPHY; MAGNETIC RESONANCE IMAGING; FLUORESCENCE IMAGING; and MICROSCOPY.Adsorption: The adhesion of gases, liquids, or dissolved solids onto a surface. It includes adsorptive phenomena of bacteria and viruses onto surfaces as well. ABSORPTION into the substance may follow but not necessarily.Microscopy, Atomic Force: A type of scanning probe microscopy in which a probe systematically rides across the surface of a sample being scanned in a raster pattern. The vertical position is recorded as a spring attached to the probe rises and falls in response to peaks and valleys on the surface. These deflections produce a topographic map of the sample.Oxides: Binary compounds of oxygen containing the anion O(2-). The anion combines with metals to form alkaline oxides and non-metals to form acidic oxides.Silver Nitrate: A silver salt with powerful germicidal activity. It has been used topically to prevent OPHTHALMIA NEONATORUM.Biomedical Research: Research that involves the application of the natural sciences, especially biology and physiology, to medicine.Micro-Electrical-Mechanical Systems: A class of devices combining electrical and mechanical components that have at least one of the dimensions in the micrometer range (between 1 micron and 1 millimeter). They include sensors, actuators, microducts, and micropumps.Delayed-Action Preparations: Dosage forms of a drug that act over a period of time by controlled-release processes or technology.Dendrimers: Tree-like, highly branched, polymeric compounds. They grow three-dimensionally by the addition of shells of branched molecules to a central core. The overall globular shape and presence of cavities gives potential as drug carriers and CONTRAST AGENTS.Equipment Failure Analysis: The evaluation of incidents involving the loss of function of a device. These evaluations are used for a variety of purposes such as to determine the failure rates, the causes of failures, costs of failures, and the reliability and maintainability of devices.Hafnium: Hafnium. A metal element of atomic number 72 and atomic weight 178.49, symbol Hf. (From Dorland, 28th ed)Polyethyleneimine: Strongly cationic polymer that binds to certain proteins; used as a marker in immunology, to precipitate and purify enzymes and lipids. Synonyms: aziridine polymer; Epamine; Epomine; ethylenimine polymer; Montrek; PEI; Polymin(e).Aluminum Oxide: An oxide of aluminum, occurring in nature as various minerals such as bauxite, corundum, etc. It is used as an adsorbent, desiccating agent, and catalyst, and in the manufacture of dental cements and refractories.Diamond: Diamond. A crystalline form of carbon that occurs as hard, colorless or tinted isomeric crystals. It is used as a precious stone, for cutting glass, and as bearings for delicate mechanisms. (From Grant & Hackh's Chemical Dictionary, 5th ed)Dextrans: A group of glucose polymers made by certain bacteria. Dextrans are used therapeutically as plasma volume expanders and anticoagulants. They are also commonly used in biological experimentation and in industry for a wide variety of purposes.Photoelectron Spectroscopy: The study of the energy of electrons ejected from matter by the photoelectric effect, i.e., as a direct result of absorption of energy from electromagnetic radiation. As the energies of the electrons are characteristic of a specific element, the measurement of the energy of these electrons is a technique used to determine the chemical composition of surfaces.Silicones: A broad family of synthetic organosiloxane polymers containing a repeating silicon-oxygen backbone with organic side groups attached via carbon-silicon bonds. Depending on their structure, they are classified as liquids, gels, and elastomers. (From Merck Index, 12th ed)Silver Compounds: Inorganic compounds that contain silver as an integral part of the molecule.Polyesters: Polymers of organic acids and alcohols, with ester linkages--usually polyethylene terephthalate; can be cured into hard plastic, films or tapes, or fibers which can be woven into fabrics, meshes or velours.Nanopores: Small holes of nanometer dimensions in a membrane, that can be used as single molecule detectors. The pores can be biological or synthetic.Optical Devices: Products or parts of products used to detect, manipulate, or analyze light, such as LENSES, refractors, mirrors, filters, prisms, and OPTICAL FIBERS.Microscopy, Fluorescence: Microscopy of specimens stained with fluorescent dye (usually fluorescein isothiocyanate) or of naturally fluorescent materials, which emit light when exposed to ultraviolet or blue light. Immunofluorescence microscopy utilizes antibodies that are labeled with fluorescent dye.Cyanoacrylates: A group of compounds having the general formula CH2=C(CN)-COOR; it polymerizes on contact with moisture; used as tissue adhesive; higher homologs have hemostatic and antibacterial properties.Magnetic Phenomena: Characteristics, properties, and effects of magnetic substances and magnetic fields.X-Ray Diffraction: The scattering of x-rays by matter, especially crystals, with accompanying variation in intensity due to interference effects. Analysis of the crystal structure of materials is performed by passing x-rays through them and registering the diffraction image of the rays (CRYSTALLOGRAPHY, X-RAY). (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Tissue Distribution: Accumulation of a drug or chemical substance in various organs (including those not relevant to its pharmacologic or therapeutic action). This distribution depends on the blood flow or perfusion rate of the organ, the ability of the drug to penetrate organ membranes, tissue specificity, protein binding. The distribution is usually expressed as tissue to plasma ratios.Emulsions: Colloids formed by the combination of two immiscible liquids such as oil and water. Lipid-in-water emulsions are usually liquid, like milk or lotion. Water-in-lipid emulsions tend to be creams. The formation of emulsions may be aided by amphiphatic molecules that surround one component of the system to form MICELLES.Nanotubes, Carbon: Nanometer-sized tubes composed mainly of CARBON. Such nanotubes are used as probes for high-resolution structural and chemical imaging of biomolecules with ATOMIC FORCE MICROSCOPY.Spectrometry, X-Ray Emission: The spectrometric analysis of fluorescent X-RAYS, i.e. X-rays emitted after bombarding matter with high energy particles such as PROTONS; ELECTRONS; or higher energy X-rays. Identification of ELEMENTS by this technique is based on the specific type of X-rays that are emitted which are characteristic of the specific elements in the material being analyzed. The characteristic X-rays are distinguished and/or quantified by either wavelength dispersive or energy dispersive methods.Contrast Media: Substances used to allow enhanced visualization of tissues.Electrochemical Techniques: The utilization of an electrical current to measure, analyze, or alter chemicals or chemical reactions in solution, cells, or tissues.Photons: Discrete concentrations of energy, apparently massless elementary particles, that move at the speed of light. They are the unit or quantum of electromagnetic radiation. Photons are emitted when electrons move from one energy state to another. (From Hawley's Condensed Chemical Dictionary, 11th ed)Biomimetic Materials: Materials fabricated by BIOMIMETICS techniques, i.e., based on natural processes found in biological systems.Poa: A plant genus of the family POACEAE that contains the Poa p Ia allergen and allergen C KBGP.Fluorescent Dyes: Agents that emit light after excitation by light. The wave length of the emitted light is usually longer than that of the incident light. Fluorochromes are substances that cause fluorescence in other substances, i.e., dyes used to mark or label other compounds with fluorescent tags.Diatoms: The common name for the phylum of microscopic unicellular STRAMENOPILES. Most are aquatic, being found in fresh, brackish, and salt water. Diatoms are noted for the symmetry and sculpturing of their siliceous cell walls. They account for 40% of PHYTOPLANKTON, but not all diatoms are planktonic.Miniaturization: The design or construction of objects greatly reduced in scale.Drug Stability: The chemical and physical integrity of a pharmaceutical product.Crystallization: The formation of crystalline substances from solutions or melts. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Cell Tracking: Non-invasive imaging of cells that have been labeled non-destructively, such as with nanoemulsions or reporter genes that can be detected by molecular imaging, to monitor their location, viability, cell lineage expansion, response to drugs, movement, or other behaviors in vivo.Optical Processes: Behavior of LIGHT and its interactions with itself and materials.Microscopy, Confocal: A light microscopic technique in which only a small spot is illuminated and observed at a time. An image is constructed through point-by-point scanning of the field in this manner. Light sources may be conventional or laser, and fluorescence or transmitted observations are possible.Poloxamer: A nonionic polyoxyethylene-polyoxypropylene block co-polymer with the general formula HO(C2H4O)a(-C3H6O)b(C2H4O)aH. It is available in different grades which vary from liquids to solids. It is used as an emulsifying agent, solubilizing agent, surfactant, and wetting agent for antibiotics. Poloxamer is also used in ointment and suppository bases and as a tablet binder or coater. (Martindale The Extra Pharmacopoeia, 31st ed)Optical Phenomena: LIGHT, it's processes and properties, and the characteristics of materials interacting with it.Lab-On-A-Chip Devices: Microdevices that combine microfluidics technology with electrical and/or mechanical functions for analyzing very small fluid volumes. They consist of microchannels etched into substrates made of silicon, glass, or polymer using processes similar to photolithography. The test fluids in the channels can then interact with different elements such as electrodes, photodetectors, chemical sensors, pumps, and valves.Comb and Wattles: Fleshy and reddish outgrowth of skin tissue found on top of the head, attached to the sides of the head, and hanging from the mandible of birds such as turkeys and chickens.Neoplasms: New abnormal growth of tissue. Malignant neoplasms show a greater degree of anaplasia and have the properties of invasion and metastasis, compared to benign neoplasms.Selenium Compounds: Inorganic compounds that contain selenium as an integral part of the molecule.Streptavidin: A 60-kDa extracellular protein of Streptomyces avidinii with four high-affinity biotin binding sites. Unlike AVIDIN, streptavidin has a near neutral isoelectric point and is free of carbohydrate side chains.
In 2001 IBM researchers demonstrated how metallic nanotubes can be destroyed, leaving semiconducting ones behind for use as ... Examples include silicon coated CNTs to create flexible energy-dense batteries,[58] graphene coatings to create highly elastic ... CNTs exhibit dimensional and chemical compatibility with biomolecules, such as DNA and proteins. CNTs enable fluorescent and ... Recent advances show that MWNT decorated with maghemite nanoparticles can be oriented in a magnetic field[107] and enhance the ...
This has led to the reproducible fabrication of sub-10 nm structures in silicon and other metallic surfaces. Local oxidation ... is an important tool for the fabrication of new nanodevices based on the novel properties exhibited by some nanoparticles and ... In 2005, researchers at the Spanish National Research Council in Madrid wrote the first ten lines of Cervantes' Don Quixote on ... LON also allows to fabricate Silicon Nanowires (SiNWs) in a top-down fashion starting from silicon on insulator (SOI) wafers. ...
Such materials include carbon nanotubes (CNTs), metallic nanoparticles like Ag, Pt, Au, and nanostructured surfaces. This ... Recently, researchers were able to analyze in ambient conditions as a result of the involvement of DART ion source into the ... Porous silicon acted as an effective substrate for SALDI, its porous structure helped in trapping the analytes and its unique ... They exhibit better performance than former materials like super black, (a chemically etched nickel-phosphorus alloy). This ...
The ascorbic acid radical and CTA-AuCl3 react spontaneously to create metallic Au0 nanoparticles and other byproducts. An ... Surfactants also help to prevent aggregation (e.g. via DLVO mechanisms). Gold (Au) nanoparticles are interesting to researchers ... The silicon precursor began to hydrolyze between the micelles and finally filled the gap with silicon dioxide. The template ... CTAB exhibited anticancer cytotoxicity against several HNC cell lines with minimal effects on normal fibroblasts, a selectivity ...
Aside from that, researchers are also looking into incorporating nanocomposite hydrogels with silver nanoparticles for ... Inspired by flexible biological tissues, researchers incorporate carbon-based, polymeric, ceramic and/or metallic nanomaterials ... Some of them, like calcium and silicon, help with preventing bone loss and skeletal development. Others, like nanoclays, ... This data shows that nanocomposite hydrogels exhibit superior strength relative to conventionally-made hydrogels, which would ...
... offered increased operating temperatures compared with metallic heaters. Silicon carbide elements are used ... "Silicon Carbide". Ceramic Arts Daily. UCLA researchers create exceptionally strong and lightweight new metal "Top 10 Fast Cars ... In December 2015, infusion of silicon carbide nano-particles in molten magnesium was mentioned as a way to produce a new strong ... The natural resistance to oxidation exhibited by silicon carbide, as well as the discovery of new ways to synthesize the cubic ...
The use of SiNWs instead of planar silicon enhances the antiflection properties of Si.[69] The SiNW exhibits a light-trapping ... "Synthesis of high purity silicon nanoparticles in a low Pressure microwave reactor". Journal of Nanoscience and Technology. 4 ( ... Researchers were able to observe quantum dots in lymph nodes of mice for more than 4 months.[57] ... Optical properties of spherical metallic QDs are well described by the Mie scattering theory. ...
The silicon quantum dots emitted stable fluorescence over pH values (2-14) and exhibited strong tolerance to salt and ... It is worth noting that these QDs are also flexible to conjugate with other agents such as metallic nanoparticles, radioactive ... Thus, many researchers have focused on the development of cadmium-free quantum dots (CFQDs) in the past decade. Localized ... Quantum dots (QDs) are usually referred to semiconductor nanoparticles with a size less than 10 nm. They exhibited size- ...
Only fabricated NIMs exhibit this capability. Photonic crystals, like many other known systems, can exhibit unusual propagation ... In 2014 researchers announced a 400 nanometer thick frequency-doubling non-linear mirror that can be tuned to work at near- ... One nanoscale SRR cell has three small metallic rods that are physically connected. This is configured as a U shape and ... The metamaterial is made of four layers on a silicon substrate. The first layer is palladium, covered by polyimide (plastic) ...
... metallic). Metallic carbon nanotubes have also been proposed for nanoelectronic interconnects since they can carry high current ... Carbon nanotubes exhibit a large change in electronic properties when exposed to oxygen. Similarly, other changes to the ... In 2000, the first very-large-scale integration (VLSI) NEMS device was demonstrated by researchers at IBM. Its premise was an ... A recent step in that direction has been demonstrated for diamond, achieving a processing level comparable to that of silicon. ...
In the past, nanoparticles were rotated by exploiting the incident intrinsic movement of the light, but it is the first time to ... Researchers with the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory and the University of California ( ... In a metallic nanostructure, when the applied electric field is resonant with its plasmons, the interaction between light and ... Mostly photons exhibit linear momentum as well as angular momentum. These properties attribute towards different phenomena like ...
Nanothreads were first investigated theoretically in 2001 by researchers at Penn State University and later by researchers at ... These fibers exhibit birefringence, as would be expected from their low dimensional character. In contrast, most polymers are ... with a Possible Intermediate Metallic Phase". Journal of the American Chemical Society. 133 (23): 9023-9035. doi:10.1021/ ... Carbon nanotube Boron nitride nanotube Buckypaper Carbide-derived carbon Carbon nanocone Carbon nanofibers Carbon nanoparticles ...
Researchers studied the termite's ability to maintain virtually constant temperature and humidity in their termite mounds in ... Nacre exhibits similar mechanical properties however with rather simpler structure. Nacre shows a brick and mortar llike ... This is an alternative to the apoferritin cage technique currently used to synthesize uniform CdSe nanoparticles.[88] Such ... These fruits show iridescent colors in the blue-green region of the visible spectrum which gives the fruit a strong metallic ...
In August 2012, researchers reported constructing the first NAND gate from undoped silicon nanowires. This avoids the problem ... Typically, ssDNA strands are stretched, whereafter they are decorated with metallic nanoparticles that have been functionalised ... Typical nanowires exhibit aspect ratios (length-to-width ratio) of 1000 or more. As such they are often referred to as one- ... DNA-templated metallic nanowire synthesis[edit]. An emerging field is to use DNA strands as scaffolds for metallic nanowire ...
Monocrystalline silicon is used to produce wafers used in the semiconductor and electronics industry. Second to silicon, ... Of all the metallic alloys in use today, the alloys of iron (steel, stainless steel, cast iron, tool steel, alloy steels) make ... Finally, spherical nanoparticles have three dimensions on the nanoscale, i.e., the particle is between 0.1 and 100 nm in each ... "Researchers One Step Closer to Building Synthetic Brain". Daily Tech. 25 April 2011. Archived from the original on 29 April ...
Hydrolysis reaction is initiated to form silica nanoparticles coated on ZnO nanoparticles. The center is studying hydrothermal ... The exhibits at the pavilion, many of which were provided by CoEN at AIT, were designed to introduce the students to a whole ... The facilities provided for the students in AIT is freely available to the researchers and students of the center. With a clean ... During the process, tri-sodium citrate reduces the gold salt to metallic gold particles, which acts as seeds for continuous ...
Metamaterials that exhibit a negative value for the refractive index are often referred to by any of several terminologies: ... The researchers believe this produced a negative refraction of 0.6. Nevertheless, this operates at only a single wavelength ... More recently (as of 2008[update]), layered "fishnet" NIM materials made of silicon and silver wires have been integrated into ... Pendry, J.; Holden, A.; Stewart, W.; Youngs, I. (1996). "Extremely Low Frequency Plasmons in Metallic Mesostructures" (PDF). ...
Those shells exhibit the highest mechanical strength and fracture toughness of any non-metallic substance known. The nacre from ... Chemical vapour infiltration is used to manufacture carbon/carbon and silicon carbide reinforced with carbon or silicon carbide ... Applications continue to expand as researchers develop new kinds of ceramics to serve different purposes. Zirconium dioxide ... Chemical engineering Colloid Glass-ceramic-to-metal seals Leo Morandi Materials science Mechanical engineering Nanoparticle ...
In late 2014, researchers began studying and testing graphene as a material for use in body armor. Graphene is manufactured ... These "Chicken Plates" were made of either boron carbide, silicon carbide, or aluminium oxide. They were issued to the crew of ... The first, developed at University of Delaware is based on nanoparticles within the suit that become rigid enough to protect ... Metal or ceramic plates can be used with a soft vest, providing additional protection against rifle rounds, and metallic ...
Silicon buckyballs have been created around metal ions. A type of buckyball which uses boron atoms, instead of the usual carbon ... Researchers had originally been puzzled by C72 being absent in fullerene plasma-generated soot extract, but found in endohedral ... The nC60 described below may be the result of C60 trying to form a loose metallic bond. Fullerenes are stable, but not totally ... Buckminsterfullerene does not exhibit "superaromaticity": that is, the electrons in the hexagonal rings do not delocalize over ...
... it is not exclusive to silver nanoparticles. The size of a nanoparticle greatly determines the properties that it exhibits due ... Researchers have explored the use of silver nanoparticles as carriers for delivering various payloads such as small drug ... When the concentration increases enough, dissolved metallic silver ions bind together to form a stable surface. The surface is ... Stirring for twelve hours results in the silica shell being formed consisting of a surrounding layer of silicon oxide with an ...
In 2004, NIST researchers presented evidence that an isotropic non-crystalline metallic phase (dubbed "q-glass") could be grown ... Such silicon dioxide-fluoride is used in manufacture of integrated circuits as an insulator. High levels of fluorine doping ... In the 21st century, scientists observe the properties of ancient stained glass windows, in which suspended nanoparticles ... structure at the atomic scale and that exhibits a glass transition when heated towards the liquid state. Porcelains and many ...
"Increasing light capture in silicon solar cells with encapsulants incorporating air prisms to reduce metallic contact losses". ... In a QDSC, a mesoporous layer of titanium dioxide nanoparticles forms the backbone of the cell, much like in a DSSC. This TiO. ... In 2016, researchers at Fraunhofer ISE announced a GaInP/GaAs/Si triple-junction solar cell with two terminals reaching 30.2% ... The difficulty, however, is that the conversion efficiency of existing phosphors exhibiting up- or down-conversion is low, and ...
Specialized supports include silicon dioxide, titanium dioxide, calcium carbonate, and barium sulfate. In the context of ... One common type of fuel cell electrocatalyst is based upon nanoparticles of platinum that are supported on slightly larger ... Most biocatalysts are enzymes, but other non-protein-based classes of biomolecules also exhibit catalytic properties including ... in 2008 Danish researchers first revealed the sequence of events when oxygen and hydrogen combine on the surface of titanium ...
"Increasing light capture in silicon solar cells with encapsulants incorporating air prisms to reduce metallic contact losses". ... In a QDSC, a mesoporous layer of titanium dioxide nanoparticles forms the backbone of the cell, much like in a DSSC. This TiO. ... Hence researchers try to make a cell with two electrical contact points and one junction, which does not need a GaAs substrate ... The difficulty, however, is that the conversion efficiency of existing phosphors exhibiting up- or down-conversion is low, and ...
Monocrystalline silicon is used to produce wafers used in the semiconductor and electronics industry. Second to silicon, ... Of all the metallic alloys in use today, the alloys of iron (steel, stainless steel, cast iron, tool steel, alloy steels) make ... Finally, spherical nanoparticles have three dimensions on the nanoscale, i.e., the particle is between 0.1 and 100 nm in each ... "Researchers One Step Closer to Building Synthetic Brain". Daily Tech. 25 April 2011. Archived from the original on 29 April ...
In 2001 IBM researchers demonstrated how metallic nanotubes can be destroyed, leaving semiconducting ones behind for use as ... Examples include silicon coated CNTs to create flexible energy-dense batteries,[58] graphene coatings to create highly elastic ... CNTs exhibit dimensional and chemical compatibility with biomolecules, such as DNA and proteins. CNTs enable fluorescent and ... Recent advances show that MWNT decorated with maghemite nanoparticles can be oriented in a magnetic field[107] and enhance the ...
... use metal nanoparticles which are so small that they no longer show their metallic character under current flow but exhibit an ... Transistors, as used in billions on every computer chip, are nowadays based on semiconductor-type materials, usually silicon. ... In contrast to previous similar approaches, the nanoparticles are not deposited as individual structures, rendering the ... they are deposited as thin films with a height of only one layer of nanoparticles. Employing this method, the electrical ...
... metal nanoparticles exhibit strong surface plasmon resonance in visible light but not in IR. Researchers at the University of ... the researchers built an absorber from zinc oxide and combined it with its metallic version, aluminum-doped zinc oxide, which ... The hyperbolic nanotube array was then transferred from the silicon substrate to a thin, elastic polymer. The material ... Our simulations show that this is possible," said researcher Conor Riley. SEM images of a nanotube array: side view (left) and ...
... the researchers used fillers (such as boron nitride, diamond, aluminum nitride, alumina, fused SiO2, silicon carbide and ... The main advantage of using these composites was that they exhibited compatible and better properties which were could not be ... beryllium oxide) [5-8]. Some studies used metallic fillers, graphite and carbon black for enhancing the thermal and electrical ... We also purchased the alumina silicate nanoparticle (NGK-NPs) ceramic powder (grain size of ≈ 80 nm; density of 5.8 gm/cm3) ...
... use metal nanoparticles which are so small that they no longer show their metallic character under current flow but exhibit an ... New transistor concept uses metal nanoparticles. Researchers have succeeded in producing transistors based on a completely ... Precision work: Defect-free coatings for silicon spheres. International efforts are striving to redefine the base unit for ... Researchers test 3-D-printed water quality sensor. Researchers at UBCs Okanagan campus have designed a tiny device-built using ...
... scaffold particles with typical particle dimensions of 100 nm to 1000 nm that contain metallic nanoparticles. [more] ... Join us June 1-5 in Boston, MA for 11th Annual Nanotech Conference, Worlds Largest Conference and Exhibit Hall Dedicated to ... The laboratory will be open to university researchers, other Utah universities, and companies. [more] ... HeiQ has developed a continuous, gas-phase process to produce amorphous silicon dioxide (SiO2) ...
This tin-based nanocomposite exhibits a very high specific capacity, excellent cycling performance, and therefore shows great ... Chinese scientists have prepared tin nanoparticles encapsulated in elastic hollow carbon spheres. ... To meet the demand for batteries having higher energy density and improved cycle characteristics, researchers have been making ... Metallic tin is considered to be a very promising anode material for lithium batteries mainly for three reasons Prof. Li-Jun ...
Commonly used materials include dispersions of metallic or carbon particles (e.g., silver nanoparticles) and conductive and ... PyzoFlex [5] is a thin pressure-sensing foil that exhibits a very linear response and therefore allows for continuous ... Now printed electronics itself is becoming accessible as a tool for HCI researchers, makers, and even interested laypeople. ... Will the next generation of microprocessors be printed? Will printed electronics replace conventional silicon-based electronics ...
This has led to the reproducible fabrication of sub-10 nm structures in silicon and other metallic surfaces. Local oxidation ... is an important tool for the fabrication of new nanodevices based on the novel properties exhibited by some nanoparticles and ... In 2005, researchers at the Spanish National Research Council in Madrid wrote the first ten lines of Cervantes Don Quixote on ... LON also allows to fabricate Silicon Nanowires (SiNWs) in a top-down fashion starting from silicon on insulator (SOI) wafers. ...
... nanotechnology researchers in France have developed a hybrid nanoparticle-organic transistor that can mimic the main ... For the first time, nanotechnology researchers in France have developed a hybrid nano-particle-organic transistor that can ... and gold nano-particles. It exhibits the main behavior of a biological spiking synapse and can lead to a new generation of ... we have demonstrated that electric charges flowing through a mixture of an organic semiconductor and metallic nano-particles ...
Such materials include carbon nanotubes (CNTs), metallic nanoparticles like Ag, Pt, Au, and nanostructured surfaces. This ... Recently, researchers were able to analyze in ambient conditions as a result of the involvement of DART ion source into the ... Porous silicon acted as an effective substrate for SALDI, its porous structure helped in trapping the analytes and its unique ... They exhibit better performance than former materials like super black, (a chemically etched nickel-phosphorus alloy). This ...
We show that an enhanced water-bridge can be electrostatically induced between a conducting probe and a metallic nanoparticle ... These motors exhibit a 100% enhanced velocity as compared to standard SiO2-Pt motors. Furthermore, the versatility of graphene ... Here, we prepared an enzyme powered Janus nano-motor by half-capping a thin layer of silicon dioxide (4 nm SiO2) onto a ... FOR RESEARCHERS. *FOR YOUNG SCIENTISTS. *FOR INDUSTRY AND HOSPITALS. *FOR PUBLIC AND PRESS ...
The journal serves researchers from academia and industry, and will publish articles ranging from basic biology of drug and ... The laser plume contains vaporized carbon and metallic nanoparticles that lead to the reassembling of carbon in the form of ... These composites exhibit maximal transfection efficiencies and inhibition effects on tumor cells when compared to CNT-NH2-asODN ... Several researchers reported different modifications of the laser ablation method to improve the geometry and yield of SWCNTs ( ...
... hydrogen-terminated silicon nanoparticles. Now, researchers have developed a new solution route for the production of ... Self-lubricating coatings, i.e. coatings which exhibit reduced wear and friction without resorting to tribological fluids, have ... of metallic surfaces. ... silicon nanoparticles are expected to be an ideal candidate for ... Different synthetic and physical methods have been used to prepare silicon nanoparticles. However, the yields of nanoparticles ...
Breakdown of Metallic Single-Wall Carbon Nanotube Paths by NiO Nanoparticle Point Etching for High Performance Thin Film ... Carbon nanotube-copper exhibiting metal-like thermal conductivity and silicon-like thermal expansion for efficient cooling of ... CREST Postdoctoral Researcher. Hokkaido University. 2003-2004. Japan Society for the Promotion of Science (JSPS) Fellow. ... Site-Selective Silicon Adatom Desorption Using Femtosecond Laser Pulse Pairs and Scanning Tunneling Microscopy. D.N. Futaba, R ...
The porous nanoparticles exhibit very high combustion speeds of 1900 m/s. In conclusion, the results clearly reveal that the ... Silicon nanostructured powder (with a wide variety of morphologies such as nanoparticles, nanowires, and nanotubes) were ... Nanothermite composites containing metallic fuel and inorganic oxidizer have unique combustion properties that make them ... This volume will be of use to researchers working on various applications of high-energy research. ...
Depending on their specific diameter and the bonding arrangement of their carbon atoms, nanotubes exhibit either metallic or ... For example, nanowires made of carbon nanotubes, silicon, or other semiconductor materials exhibit exceptional sensitivity to ... This same general approach to nanoparticle-directed drug delivery is being explored for other types of nanoparticles as well. ... For example, researchers hope to design retinal implants for vision-impaired individuals. The concept is to implant chips with ...
For the UMD researchers, the experience of the discovery was like what you or I might have felt, if, on a seemingly ordinary ... "We now know that silicon nitride can absorb energy from a current-carrying nanotube in this way, but we would like to test ... Carbon nanotubes are known to conduct electricity like nanoscale metallic wires, so Baloch and Cumings expected to see the same ... the substrate below it grew hot enough to melt metal nanoparticles on its surface, but the nanotube itself seemed to stay cool ...
The addition of colored nanoparticles may allow nanocompounds to serve as colorants, for instance with metallic nanoparticles ... They coated iron oxide particles with silicon dioxide and included these super-paramagnetic nanoparticles - called MagSilica - ... Researchers from Degussa and their colleagues from the Fraunhofer Institute for Manufacturing Technology and Materials Research ... Nanotechnology enables MagSilica to reach the required strength about ten times faster, and the material exhibits better ...
The results showed that exposure of the airways to carbonaceous nanoparticles exhibited adjuvant effects by aggravating the ... raw-MWNTs and positive control crystalline silicon dioxide particles. The findings showed that silicon dioxide particles ... However, a meta-analysis of nanotoxicity studies showed that CNT-induced lung injury is not dominated by metallic impurities [ ... In vitro models have been developed for cytotoxicity studies to eliminate some variables in animal studies so that researchers ...
Printable electronics inks already exhibit good stability and performance. Nanoparticle inks have shown good conductivity and ... RIT researchers improve fabrication process of nano-structures for electronic devices: Use of indium gallium phosphide with I- ... Monocrystalline silicon thin film for cost-cutting solar cells with 10-times faster growth rate fabricated: Controlling nano ... analysis of market opportunities available in printable electronics for a wide range of materials including nano-metallic ...
silicon substrate, silicon substrate previously coated with PDMS, and Ag:HAp nanoparticles on a silicon substrate previously ... The Ag 3d spectrum exhibits a broad doublet with an Ag 3d5/2 and Ag 3d3/2 component. The XPS spectral peaks for Ag 3d were ... The increases of morbidity and mortality caused by C. albicans are very high and researchers worldwide are searching new ... The details regarding the experimental set-up and the procedure of PDMS layer generation on metallic substrates was presented ...
Researchers found that friction progressively increased as the number ...Robert Carpick professor in the Department of ... PHILADELPHIA - A team of nanotechnology researchers from the Universit...The finding reveals a significant principle for these ... Each material exhibited the same basic frictional behavior despite having electronic properties that vary from metallic to ... The team literally shaved off atomic-scale amounts of each material onto a silicon oxide substrate and compared their findings ...
This article studies the origin of broad band light emission in the ultraviolet to the red from silicon nanoparticles ... Metallic arrays m!lde from Pb, generally a poor metal, and having optically thin thicknesses less than one-third of a skin ... Grating-gate detectors exhibit narrow-linewidth, broad spectral tunability through application of a gate bias, and no angular ... Researchers have come up with various designs in an efort to fabricate efficient plasmonic waveguides capable of guiding ...
The use of SiNWs instead of planar silicon enhances the antiflection properties of Si.[69] The SiNW exhibits a light-trapping ... "Synthesis of high purity silicon nanoparticles in a low Pressure microwave reactor". Journal of Nanoscience and Technology. 4 ( ... Researchers were able to observe quantum dots in lymph nodes of mice for more than 4 months.[57] ... Optical properties of spherical metallic QDs are well described by the Mie scattering theory. ...
  • Science Daily explains that the innovation of the NOMFET resides in the original combination of an organic transistor and gold nanoparticles. (zdnet.com)
  • Our smart dust consists of silica shell-isolated gold nanoparticles which can work as strong light concentrators and optically report subtle changes at their pinning sites on the probed surface. (spie.org)
  • Due to high quality of the sphere surface and straight side walls of the cut the magnetic resonance can clearly be observed at 625 nm in gold nanoparticles. (spie.org)
  • Chinese scientists have redesigned collective chemotaxis by creating artificial model nanoswimmers from chemically and biochemically modified gold nanoparticles. (vixra.org)
  • This image depicts destructive electron extraction from bacterial membranes by plasmonic gold nanoparticles. (phys.org)
  • They describe the results of tests with a new antibacterial material they developed based on gold nanoparticles in the journal Applied Physics Letters . (phys.org)
  • Gold nanoparticles, though, can continue to act as anti-bacterial terminal electron acceptors under darkness, due to a phenomenon called localized surface plasmon resonance. (phys.org)
  • The localized electron oscillations at the nanoscale cause the gold nanoparticles to become excited and pass electrons to the titanium dioxide surface, thus allowing the particles to become electron acceptors. (phys.org)
  • Liu and his team electrochemically anodized titanium to form titanium dioxide nanotube arrays, and then further deposited the arrays with gold nanoparticles in a process called magnetron sputtering. (phys.org)
  • Plasmonic gold nanoparticles modified titania nanotubes for antibacterial application" Jinhua Li, Huaijuan Zhou, Shi Qian, Ziwei Liu, Jingwei Feng, Ping Jin and Xuanyong Liu, Applied Physics Letters on July 1, 2014. (phys.org)
  • These Coulomb transistors have three main advantages that make them interesting for commercial applications: The synthesis of metal nanoparticles by colloidal chemistry is very well controllable and scalable. (scienmag.com)
  • Chemical synthesis methods involve the use of many toxic chemicals which limits the applications of chemically synthesized nanoparticles, especially in medical field and are not environmental friendly ( Vijayaraghavan and Ashokkumar 2017 ). (conicyt.cl)
  • Search for a biocompatible, non-toxic and ecofriendly method of nanoparticle synthesis lead to the development of biological synthesis route for production of nanoparticles. (conicyt.cl)
  • Of all these biomaterials, plant extracts are considered more advantageous for the synthesis due to their availability, renewable nature, simplicity of process, efficiency, rate and stability of synthesized nanoparticles and cost effectiveness (Vijayaraghavan and Ashokkumar 2017, Iravani 2011 ). (conicyt.cl)
  • Join us June 1-5 in Boston, MA for 11th Annual Nanotech Conference, World's Largest Conference and Exhibit Hall Dedicated to Nanoscale Technologies. (nsti.org)
  • Consequently, researchers are trying to optimize available electrode materials by designing new composite structures, often at the nanoscale. (nanowerk.com)
  • The " nanoscale" is typically measured in nanometres, or billionths of a metre ( nanos , the Greek word for "dwarf," being the source of the prefix), and materials built at this scale often exhibit distinctive physical and chemical properties due to quantum mechanical effects. (britannica.com)
  • Carbon nanotubes are known to conduct electricity like nanoscale metallic wires, so Baloch and Cumings expected to see the same effect when they passed current through a carbon nanotube . (phys.org)
  • PHILADELPHIA - A team of nanotechnology researchers from the University of Pennsylvania and Columbia University has used friction force microscopy to determine the nanoscale frictional characteristics of four atomically-thin materials, discovering a universal characteristic for these very different materials. (bio-medicine.org)
  • This is the nanoscale onset of the well-known process of liquid boiling, occurring at a single nanoparticle nucleation site, resulting from the photothermal response of the nanoparticle. (spie.org)
  • The temperature on the nanoparticle surface is monitored during this process, where a dramatic temperature jump is observed as the nanoscale vapor layer thermally decouples the nanoparticle from the surrounding liquid. (spie.org)
  • Nanotechnology researchers like California Institute of Technology professor Nate Lewis are exploring nanoscale materials that mimic the architecture of grass and photosynthesis to capture and store the sun's energy. (peswiki.com)
  • Professor Valsami-Jones' research interests focus on understanding reactivity at the nanoscale, particularly interactions of nanoparticles with pollutants and biota and biomineralisation processes. (birmingham.ac.uk)
  • The nanoscale fragments were found to be composed of 70-85% carbon and low amounts of oxygen, heavy metals and other elements and exhibited nanosheet topographies (approximately 0.87-1.31 nm thickness and 68-187 nm lateral length). (deepdyve.com)
  • Because the isolated nanoscale fragments were mixtures rather than one specific type of nanoparticle, they were present at high concentrations ranging from 0.07 to 0.55 mg/L. It was also found that the accumulation of nanoscale fragments in rice reached 0.59 mg/g under exposure to environmentally relevant concentrations, leading to marked phytotoxicity (e.g., ultrastructural damage to chloroplasts and mitochondria). (deepdyve.com)
  • Given that WWTP effluents containing nanoscale fragments are continuously discharged to the soil, surface water and seas, nanoscale fragment materials deserve considerable attention in future work compared with the few widely studied engineered nanoparticles. (deepdyve.com)
  • In this study, the investigation of the use of polyvinyl chloride-paste (PVC-P) composites which contained spark plug aluminum silicate nanoparticles (NGK-NPs) for different insulation applications was carried out. (nanobe.org)
  • The main advantage of using these composites was that they exhibited compatible and better properties which were could not be displayed by the constituent materials [1- (nanobe.org)
  • Furthermore, for developing polymer-matrix composites that displayed better electrical insulation and thermal conductivity, the researchers used fillers (such as boron nitride, diamond, aluminum nitride, alumina, fused SiO 2 , silicon carbide and beryllium oxide) [5- (nanobe.org)
  • 4) Composites: Composites materials are blend of different categories of materials and are capable of exhibiting the properties that cannot be displayed by their constituting counterparts. (scirp.org)
  • As a result of vast difference in properties of metals, polymers and ceramics, composites were developed to bridge the gap between any two categories of materials while exhibiting a combination of properties that can be tailored based on end applications. (scirp.org)
  • lightweight composites for faster vehicles, optical fibers for telecommunications and silicon microchips for the information revolution. (chemistryconferences.org)
  • National Institute of Standards and Technology (NIST) August 22nd, 2018 Nanoparticle manufacturing, the production of material units less than 100 nanometers in size (100,000 times smaller than a marble), is proving the adage that "good things come in small packages. (sciencesgate.com)
  • Virginia Tech August 23rd, 2018 Researchers from Virginia Tech and Lawrence Livermore National Laboratory have developed a novel way to 3D print complex objects of one of the highest-performing materials used in the battery and aerospace industries. (sciencesgate.com)
  • Magnetic nanoparticles have been an important class of biomaterials. (omicsonline.org)
  • Due to these advantages, metals will continue to play an important role as orthopedic biomaterials in the future, even though there are concerns with regard to the release of certain ions from and corrosion products of metallic implants. (scribd.com)
  • Metallic materials continue to play an essential role as biomaterials to assist with the repair or replacement of bone tissue that has become diseased or damaged (Puleo DA et al ,1995) Metals are more suitable for load-bearing applications compared with ceramics or polymeric materials due to their combination of high mechanical strength and fracture toughness. (scribd.com)
  • Currently approved and commonly used metallic biomaterials include stainless steels, titanium and cobalt chromium-based alloys. (scribd.com)
  • A limitation of these current metallic biomaterials is the possible release of toxic metallic ions and/or particles through corrosion or wear processes that lead to inflammatory cascades which reduce biocompatibility and cause tissue loss. (scribd.com)
  • Thus, Silver nanoparticles (AgNPs) have been urbanized as an advanced artifact in the field of nanotechnology. (slideshare.net)
  • In the present investigation, the green biosynthesis of silver nanoparticles (AgNPs) with aqueous fruit extract of Terminalia belarica has been carried out, and ultraviolet-visible spectroscopy (UV-Vis) analysis was done which revealed an intense surface plasmon resonance (SPR) band at 430 nm, thus confirming the formation of Tb -AgNPs. (nanobe.org)
  • The material exhibited mechanical flexibility and visible transparency while maintaining near-perfect absorption at telecommunication wavelengths, even after being transferred to the polymer. (photonics.com)
  • NanoMarkets' new report, "Materials and Substrates for Printable Electronics: Opportunities and Markets," provides a thorough analysis of market opportunities available in printable electronics for a wide range of materials including nano-metallic silver and polymer inks, as well as other inks made from metals, organic materials and standard semiconductors. (nanotech-now.com)
  • For this purpose, in the recent years, researchers worldwide have focused on the development of novel hybrid materials, by combining the polymer science and nanotechnology, for different biomedical applications, such as drug delivery [ 1 - 4 ] or biomimetic implants [ 1 , 5 - 9 ]. (hindawi.com)
  • 30895 - A method, apparatus and system for creating a composite material comprised of nanoparticles and a polymer matrix, which can be utilized to site selectively heat said polymers utilizing lasers of a specific wavelength. (ucf.edu)
  • 30893 - Methods, apparatus and systems for coating nanoparticles to a polymer support and irradiating the coated support with a laser to transfer heat/energy to materials in chemical mixtures thereby serving as that reactions catalyst. (ucf.edu)
  • In order to control the number of free electron carriers on the metal surface, the researchers built an absorber from zinc oxide and combined it with its metallic version, aluminum-doped zinc oxide, which can hold a high enough amount of free electrons to give it plasmonic properties in the IR. (photonics.com)
  • 2015 Ghulam Raza (University of Birmingham), "Quantifying base-line titanium oxide manufactured nanoparticle concentrations in the aquatic environment", 2nd supervisor. (birmingham.ac.uk)
  • A nanofluid composed of a base fluid and a solid nanocomposite particle, where the solid nanocomposite particle consists of a carbon nanotube and a metal oxide nanoparticle selected from the group consisting of Fe.sub.2O.sub.3, Al.sub.2O.sub.3, and CuO. (patents.com)
  • The metal oxide nanoparticle is affixed inside of or to the outer surface of the carbon nanotube, and the solid nanocomposite particle is homogeneously dispersed in the base fluid. (patents.com)
  • Copper oxide nanoparticles were synthesised using leaf extracts of Neem ( Azadirachta indica ), Pongamia ( Pongamia pinnata ), Lantana (Lantana camara ) and extract of orange peel ( Citrus reticulata ). (conicyt.cl)
  • The effectiveness of the synthesised plant extract and copper oxide nanoparticle formulation is tested against wood decay fungi using agar mixed with the test substance. (conicyt.cl)
  • Graveyard test is employed to assess the effect of the copper oxide nanoparticle formulation against termites. (conicyt.cl)
  • Quantum dots exhibit properties that are intermediate between those of bulk semiconductors and those of discrete molecules. (wikipedia.org)
  • Today's engineered nanoparticles are integral components of everything from the quantum dot nanocrystals coloring the brilliant displays of state-of-the-art televisions to the miniscule bits of silver helping bandages protect against infection. (sciencesgate.com)
  • Numerous studies reported that Nanoparticles of about 100 nm diameter play a crucial role in widely spread industries due to unique properties including the dimension of small particle, high surface area and quantum confinement and they dispersed without agglomeration. (slideshare.net)
  • YouTubers There are great air-holes that could be this pdf Adobe sizing selecting a first quantum or head, a SQL compensation or conventional Researchers. (redants-jiujitsu.de)
  • This tin-based nanocomposite exhibits a very high specific capacity, excellent cycling performance, and therefore shows great potential as anode materials in lithium-ion batteries. (nanowerk.com)
  • Because uniform Li nucleation and deposition can be fulfilled owing to the high-density active Li domains, the as-obtained nanocomposite electrode exhibits low polarization, stable cycling, and high-power output (up to 10 mA/cm 2 ) even in carbonate electrolytes. (pnas.org)
  • Our goal is to develop new small molecule catalysts that exhibit synthetically useful levels of selectivity in new chemical transformations. (ufl.edu)
  • Each material exhibited the same basic frictional behavior despite having electronic properties that vary from metallic to semiconducting to insulating. (bio-medicine.org)
  • It exhibits the main behavior of a biological spiking synapse and can lead to a new generation of neuro-inspired computers, capable of responding in a manner similar to the nervous system. (zdnet.com)
  • However, the diamond film with grain sizes at microscale usually exhibits high surface roughness and hinders its applications in the microelectro mechanical system (MEMS) and biological field because it is difficult to be polished by mechanical and chemical methods. (scirp.org)
  • We operate with the notion of "escape velocity," finding interim solutions to bridge the gap between "now" and the near-future of rapidly advancing technology and biotechnology, particularly as articulated by anti-aging researcher Aubrey de Grey in an exhortation to develop interim biological rejuvenation therapies that will be increasingly assisted by nanomedicines . (ieet.org)
  • Research on nanoparticle based nanomedicines is also actively undertaken with joint efforts with Singapore National Heart Center and School of Biological Science. (ntu.edu.sg)
  • Additionally, they exhibit excellent oxidation resistance, at temperatures higher than 850 C, due to dense alumina layer which is formed on the surface [8 (sigma-not.pl)
  • The development of desorption/ionization on silicon (DIOS)-MS in particular, and subsequently nanostructure-initiator mass spectrometry (NIMS) and nano-assisted laser desorption/ionization (NALDI), has also attracted the attention of analytical scientists. (wikipedia.org)
  • In 1981, a group of Soviet scientists published the results of chemical and structural characterization of carbon nanoparticles produced by a thermocatalytical disproportionation of carbon monoxide. (newworldencyclopedia.org)
  • Rice University scientists have created a rechargeable lithium metal battery with three times the capacity of commercial lithium-ion batteries by resolving something that has long stumped researchers: the dendrite problem. (ceramics.org)
  • Scientists have for the first time fabricated a nanomaterial made from nanoparticles of Ti 4 O 7 that is characterized by an extremely large surface area, and tested it as a cathode material in lithium-sulfur batteries. (ceramics.org)
  • The syncretic way of materials science and its complex qualities is drawing in numerous scientists and researchers towards this field for intense investigation. (chemistryconferences.org)
  • HeiQ has developed a continuous, gas-phase process to produce amorphous silicon dioxide (SiO2) scaffold particles with typical particle dimensions of 100 nm to 1000 nm that contain metallic nanoparticles. (nsti.org)
  • They must be very small silver micro-particles - i.e., what is more commonly known as "nanosilver" -- in order to exhibit such powerful anti-viral qualities. (scribd.com)
  • 33384 - Researchers at UCF have created a new type of composite optical element as well as methods for fabricating particles and fibers from the material, depending upon the application. (ucf.edu)
  • SWNT biosensors exhibit large changes in electrical impedance and optical properties, which is typically modulated by adsorption of a target on the CNT surface. (wikipedia.org)
  • In contrast to previous similar approaches, the nanoparticles are not deposited as individual structures, rendering the production very complex and the properties of the corresponding components unreliable, but, instead, they are deposited as thin films with a height of only one layer of nanoparticles. (scienmag.com)
  • Some studies used metallic fillers, graphite and carbon black for enhancing the thermal and electrical properties of the fillers [8- (nanobe.org)
  • A team of researchers from the University of Cambridge and the United States have used theoretical and experimental methods to show that solar cells incorporating bismuth can replicate the properties that enable the exceptional properties of lead-based solar cells, but without the same toxicity concerns. (ceramics.org)
  • It can also exhibit other functional properties, such as actively emitting light. (acm.org)
  • These interactions are greatly influenced by the nanoparticle properties, and therefore different designs and surface-engineering strategies have been proposed. (ibecbarcelona.eu)
  • Nanoparticle inks have shown good conductivity and curing properties in actual products. (nanotech-now.com)
  • Iowa State University and Ames Laboratory researchers have developed a method of manufacturing 3D photonic band gap crystals with superior properties. (energy.gov)
  • The relative dominance of any type of above stated category of materials depends on the spectrum and combination of properties that they can exhibit. (scirp.org)
  • For example, ceramics exhibit excellent properties under compression and high temperature and hence they are accordingly used in infrastructural applications and as insulation materials in high temperature environment such as in furnaces. (scirp.org)
  • As a result, they exhibit many of the special crystal properties for photon propagation that are normally known for electrons, such as the occurrence of bands and band gaps. (docme.ru)
  • The researchers demonstrated their findings using advanced computer simulations that can accurately model magnetic properties of nanometer-thick materials. (sciencesgate.com)
  • Their strongly layer-dependent unique properties range from semiconducting to metallic, including high carrier mobilities, tunable bandgaps, strong spin-orbit coupling or transparency. (europa.eu)
  • Decade of discoveries clearly established that shape, size and distribution of Silver nanoparticles strongly affect the electromagnetic, optical and catalytic properties, which are often an assortment of changeable synthetic methods and reducing agents with stabilizers. (slideshare.net)
  • With recent advances in materials sciences and nanotechnology, new materials are being developed that exhibit thermoelectric properties. (electroiq.com)
  • Metal nanoparticles were synthesised using plant extracts that are known to have wood preservative properties. (conicyt.cl)
  • reported the role of nanoparticles of ZnO, B 2 O 3, CuO, TiO 2 , CeO 2 and SnO 2 in prevention of fungal decay, mold growth and termite attack on wood along with their effect on weathering properties and water repellency. (conicyt.cl)
  • One of the proposed solutions for this problem was to embed silver (Ag) nanoparticles in the structure of HAp. (hindawi.com)
  • It is well known that silver exhibits high antimicrobial activity against a large number of bacterial and fungal strains [ 18 , 19 ]. (hindawi.com)
  • The silver nanoparticles attach to the bacterial cellular membrane causing modification of its permeability, thus disturbing the respiratory function [ 18 , 20 ]. (hindawi.com)
  • This article studies the origin of broad band light emission in the ultraviolet to the red from silicon nanoparticles fabricated using a single low energy silver ion implantation. (unt.edu)
  • Using silver nanoparticles one can shift magnetic resonance wavelength down to blue spectral range. (spie.org)
  • Lewis' team used an ink composed of silver nanoparticles, sending it through a printing nozzle and then annealing it using a precisely programmed laser that applies just the right amount of energy to drive the ink's solidification. (innovationtoronto.com)
  • The printed wires exhibit excellent electrical conductivity, almost matching that of bulk silver. (innovationtoronto.com)
  • When compared to conventional 3D printing techniques used to fabricate conductive metallic features, laser-assisted direct ink writing is not only superior in its ability to produce curvilinear, complex wire patterns in one step, but also in the sense that localized laser heating enables electrically conductive silver wires to be printed directly on low-cost plastic substrates. (innovationtoronto.com)
  • The result is that the method can produce not only sweeping curves and spirals but also sharp angular turns and directional changes written into thin air with silver inks, opening up near limitless new potential applications in electronic and biomedical devices that rely on customized metallic architectures. (innovationtoronto.com)
  • 2016- Ana Carrazco Quevedo, "Cytotoxic effects of Silver Nanoparticles in cell lines of Danio rerio " primary supervisor. (birmingham.ac.uk)
  • 2016 Feng Dong (University of Birmingham), Toxicity of silver nanoparticles in the bacterium Pseudomonas putida , 2nd supervisor. (birmingham.ac.uk)
  • The review article summarizes the applications of silver nanoparticles for diverse sectors. (slideshare.net)
  • Glowing, glittering "luster" ceramic glazes used in the Islamic world , and later in Europe, contained silver or copper or other metallic nanoparticles. (nano.gov)
  • Sucharitha Kumaram Venkata , Susmila Aparna Gaddam, Venkata Subbaiah Kotakadi, and Divi Venkata Ramana Sai Gopal , Multifunctional Silver Nanoparticles by Fruit Extract of Terminalia belarica and their Therapeutic Applications: A 3-in-1 System. (nanobe.org)
  • Researchers found that friction progressively increased as the number of layers is reduced on all four materials, regardless of how different the materials may behave chemically, electronically or in bulk quantities. (bio-medicine.org)
  • Researchers at UNIST, Sookmyoung Women's University, University of Seoul, and Wonkwang University have developed electrode materials that maintain long-term stability in hydrocarbon fuels. (ceramics.org)
  • To meet the demand for batteries having higher energy density and improved cycle characteristics, researchers have been making tremendous efforts to develop new electrode materials or design new structures of electrode materials. (nanowerk.com)
  • Unfortunately, the biggest challenge for employing metallic tin as applicable active anode materials is that it is suffering from huge volume variation during the lithium insertion/extraction cycle, which leads to pulverization of the electrode and very rapid capacity decay. (nanowerk.com)
  • The researchers continue to explore different materials, geometries and designs to develop absorbers that work at different wavelengths of light for various applications. (photonics.com)
  • Researchers at the University of Connecticut have found that reducing oxygen in some nanocrystalline materials may improve their strength and durability at elevated temperatures, a promising enhancement that could lead to better biosensors, faster jet engines, and greater capacity semiconductors. (ceramics.org)
  • For instance, metallic tin has recently been widely researched as one of the promising anode materials for the next generation of high energy density lithium-ion batteries. (nanowerk.com)
  • New nanoparticle-based films that are more than 80 times thinner than a human hair may help to fill this need by providing materials that can holographically archive more than 1000 times more data than a DVD in a 10-by-10-centimeter piece of film. (vixra.org)
  • In two breakthroughs in the realm of photonics, City College of New York graduate researchers are reporting the successful demonstration of an LED (light-emitting diode) based on half-light half-matter quasiparticles in atomically thin materials. (vixra.org)
  • An international research team has used nanoparticles to convert carbon dioxide into valuable raw materials. (vixra.org)
  • The intellectual origins of materials science stem from the Enlightenment , when researchers began to use analytical thinking from chemistry , physics , and engineering to understand ancient, phenomenological observations in metallurgy and mineralogy . (wikipedia.org)
  • Also due to the dramatic rise in the energy demands , researchers have started to focus on the energy materials for a better future. (chemistryconferences.org)
  • 3M is investing in research and manufacturing of novel silicon (Si) based battery anode materials, for mobile electronics and electric vehicles. (electroiq.com)
  • We discovered a new structure in gold that exists at extreme states-two thirds of the pressure found at the center of Earth,' said lead author Richard Briggs, a postdoctoral researcher at LLNL. (vixra.org)
  • And thirdly, a significant advantage of metallic tin over graphite is that it does not encounter solvent intercalation - which causes irreversible charge losses - at all. (nanowerk.com)
  • It may also help researchers understand the macroscopic behavior of graphite, MoS2 and BN, which are used as common lubricants to reduce friction and wear in machines and devices. (bio-medicine.org)
  • Lawrence Livermore National Laboratory (LLNL) researchers are working to make better electronic devices by delving into the way nanocrystals are arranged inside of them. (vixra.org)
  • Metallic arrays m!lde from Pb, generally a poor metal, and having optically thin thicknesses less than one-third of a skin depth also contributed in enhanced THz transmission. (unt.edu)
  • The researchers then allowed Staphylococcus aureus and Escherichia coli to grow separately on the arrays-both organisms were highly unsuccessful, exhibiting profuse membrane damage and cell leakage. (phys.org)
  • The local oxidation of a surface by means of a scanning probe technique was first observed by Dagata and co-workers in 1990 who locally modified a hydrogen-terminated silicon surface into silicon dioxide by applying a bias voltage between the tip of a scanning tunneling microscope and the surface itself. (wikipedia.org)
  • Extensive research has been conducted on developing advanced lithium (Li) battery anode substitutes, including silicon ( 1 ⇓ ⇓ ⇓ - 5 ), tin ( 6 , 7 ), and Li metal ( 8 ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ - 15 ), for high-energy applications in portable electronics and electrical transportation. (pnas.org)
  • Directory:Ohmasa Gas by Japan Techno Co., Ltd. - Mr. Ohmasa, president of Japan Techno, has devised a method of producing an unusual hydrogen-oxygen gas by using low frequency vibrations to circulate the water upon which electrolysis is run, creating a highly stable H2-O2 gas called Ohmasa gas which exhibits unusual characteristics. (peswiki.com)
  • Iowa State University and Ames Laboratory researchers have developed fabrication methods for a polarized thermal emitter than can be used to create more efficient thermophotovoltaic devices for power generation. (energy.gov)
  • Even though nanoparticles have addressed various issues of wood science in a more efficient way than the traditional methods of employing metal salts, commercially available nanoparticles are synthesized by physical and chemical methods. (conicyt.cl)
  • I want to get the latest chemistry news from C&EN in my inbox every week. (acs.org)
  • Metallic tin is considered to be a very promising anode material for lithium batteries mainly for three reasons' Prof. Li-Jun Wan (nanowerk.com)
  • Continuous nanoparticle production using focused acoustics Many drugs currently in development are either water insoluble or lipophilic, thus. (aiche.org)
  • Reported online May 16 in the Proceedings of the National Academy of Sciences , this laser-assisted direct ink writing method allows microscopic metallic, free-standing 3D structures to be printed in one step without auxiliary support material. (innovationtoronto.com)
  • Platinum nanoparticles (PtNPs) are noteworthy scientific tools that are being explored in various biotechnological, nanomedicinal, and pharmacological fields. (mdpi.com)