Metal nanoparticles. Medical search. Frequent questions

5.2 Test Methods B922 and C1274 and ISO 9277 and ISO 18757 exist for determination of the as produced surface area of bulk metal and metal oxide powders. (astm.org)
This test method describes the determination of the as administered surface area of airborne metal oxide nanoparticles in inhalation exposure chambers for inhalation toxicology studies. (astm.org)
The test method permits the use of any modern commercial krypton adsorption instruments but strictly defines the sample collection, outgassing, and analysis procedures for metal and metal oxide nanoparticles. (astm.org)
Beyond identifying promising metal oxide NP radiosensitisers and radioprotectors, our broad comparisons reveal unexpected differences that suggest the surface chemistry of NP radiosensitisers is an important criterion for their success. (open.ac.uk)
We developed polymer-nanoparticle based MMMs with stimuli-responsive pores and high metal adsorption capacity, which allows the subsequent synthesis of metal/metal oxide nanoparticles for catalytic degradation of environmental pollutants in water. (confex.com)
Iron and iron oxide nanoparticles were synthesized directly inside the polymer matrix, which provides added benefits of eliminating the particle aggregation and leaching. (confex.com)
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Here, PLA on Cu-Zn alloy rather than on pure Cu in water was used to fabricate (Zn,H)-codoped copper oxide nanoparticles and to study the phase behavior as well as optical property change of the colloidal solution upon dwelling in water. (springer.com)
Scientists from the University of California, Davis and Texas A&M recently collaborated on research into whether certain metal oxide nanoparticles may cause inflammation in the type of cells that line the human circulatory system. (technologylawsource.com)
The authors theorized that certain types of metal oxide nanoparticles might be taken up by endothelial cells and cause endothelium inflammation, which in turn has been shown to play a central role in atherosclerosis. (technologylawsource.com)
The scientists' in vitro experiment exposed human aortic endothelial cells to three types of metal oxide nanoparticles - iron oxide, yttrium oxide, and zinc oxide - under a wide range of concentrations and for exposure times ranging between 1 to 8 hours. (technologylawsource.com)
The smallest nanoparticles with the largest surface area - iron oxide - caused no inflammatory response, while the largest particles with the smallest surface area - zinc oxide - caused the greatest inflammatory response in the study. (technologylawsource.com)
Induction of Inflammation in Vascular Endothelial Cells by Metal Oxide Nanoparticles: Effects of Particle Composition,' Environmental Health Perspectives, Vol. 115, No. 3 (March 2007). (technologylawsource.com)
We study both surface-supported metal element nanoparticles, oxide films, and transition metal complexes. (lu.se)
Quantum chemical investigations of semiconductor nanomaterials and surfaces, including first principles atomistic calculations of pure and sensitized transition metal oxide (MOx) wide bandgap semiconductor nanoparticles, as well as III-V nanostructured materials. (lu.se)
First principles investigations of molecule-surface interactions, catalysts on solid surfaces, as well as multiscale simulations of heterogeneous catalysis involving mixed metal oxide surfaces. (lu.se)
Aim: The aim of this study was to evaluate and compare the effectiveness of 1% and 5% sodium hypochlorite (NaOCl), 2% chlorexidine (CHX), 1% silver nanoparticles (Np Ag) suspension, and 26% zinc oxide nanoparticles (Np ZnO) suspension against E. faecalis biofilm. (bvsalud.org)

Photochemical Synthesis of Noble Metal Nanoparticles: Influence of Metal Salt Concentration on Size and Distribution. (bvsalud.org)
This paper explores the photochemical synthesis of noble metal nanoparticles , specifically gold (Au) and silver (Ag) nanoparticles , using a one-component photoinitiator system. (bvsalud.org)

Ostwald in as early as 1917 reported that chloroauric acid solutions can be reduced to gold nanoparticles employing tannin even when tap water is used to prepare aqueous solutions [ 12 ]. (hindawi.com)

In this review, first various methods used to prepare metal nanoparticles are highlighted and further tannic acid mediated synthesis of metal nanoparticles is emphasized. (hindawi.com)
This developed increased interest of scientific community in the synthesis of metal nanoparticles of defined morphology. (hindawi.com)
Various procedures have been developed for the synthesis of metal nanoparticles and nanomaterials including physical, chemical, and biological methods. (hindawi.com)

Governments across several countries are recognizing the potential of metal nanoparticles and are providing incentives and support for their development and use. (marketbusinessinsights.com)

inbook{ author = "Stevanović, Magdalena", year = "2014", abstract = "Metallic nanoparticles have attracted much attention and have found applications in diff erent fi elds such as medicine, pharmacy, controlled drug delivery, optics, electronics, and other areas. (ac.rs)

The study found that while all three types of nanoparticles were taken up into the cells, only two caused an inflammatory response. (technologylawsource.com)

With surface modification techniques, ion exchange polymers and reactive nanoparticles have been in-situ synthesized in the commercial microfiltration (MF) membranes for toxic metal and organic remediation from complicated water matrices (surface and groundwater). (confex.com)

However, no systematic experimental survey of the clinical X-ray radiosensitising potential of different element nanoparticles has been made. (open.ac.uk)

Recent years have witnessed increased interests of scientific community in nanomaterials particularly metal nanoparticles in various areas ranging from material science to nanotechnology [ 1 - 3 ]. (hindawi.com)
Humans have developed and used nanomaterials since a very long time as evidenced by the ruby red colour of some glass which is due to the entrapment of gold nanoparticles in the glass matrix. (hindawi.com)
Among the most promising nanomaterials with antibacterial and antiviral properties are metallic nanoparticles (silver, gold, platinum, etc), which exhibit increased chemical activity due to their large surface to volume ratios, crystallographic surface structure and unique size-dependent optical, electrical and magnetic properties. (ac.rs)

This has led to inclination of scientific community towards eco-friendly agents for the reduction of metal salts to form nanoparticles. (hindawi.com)
We're using radiation to break down the molecular structure of substances and form nanoparticles - a synthetic approach that is flexible and versatile for making large quantities of superalloy nanoparticle compositions that can't be easily created otherwise. (science20.com)

A double potential step electrodeposition technique was used to control the deposition of platinum nanoparticles (PtNPs) at electrodes modified with self-assembled monolayers that contain defects. (dcu.ie)

The limits of detection (3s$_{y/x})$ and the analytical ranges for gold nanoparticles/carbon nanotube modified electrode (AuNP/CNT/GCE) and copper nanoparticles/carbon nanotube modified electrode (CuNP/CNT/GCE) for 40 s accumulation times were 55 \textmu g L$^{-1}$ and 83 \textmu g L$^{-1}$ and 182-1500 \textmu g L$^{-1}$ and 278-1000 \textmu g L$^{-1}$, respectively. (tubitak.gov.tr)

toxic metal and silicate particles including nanoparticles are present in both the cigarette fluid and aerosol. (wakeup-world.com)
The study authors concluded that "The presence of metal and silicate particles in cartomizer [atomizer/cartridge connecting to the battery] aerosol demonstrates the need for improved quality control in EC design and manufacture and studies on how EC aerosol impacts the health of users and bystanders. (wakeup-world.com)
Aerosol technology provides efficient methods for producing nanoparticles with well-controlled composition and size distribution. (lu.se)
The physicists have developed a method of manufacturing metal nanoparticles using aerosol technology, and one possibility would be to mix these metal nanoparticles into a liquid that is then used to print, he explains. (lu.se)

Researchers from Utrecht University, Netherlands in collaboration with R&D colleagues Peter Berben, Esther Groeneveld and Gerda Kamsma from BASF in De Meern, Netherlands, have found a way to study the conversion process in detail and determine the perfect size for the catalytic nickel nanoparticles. (basf.com)
In order to understand how these nickel nanoparticles behave during the conversion of CO 2 , the researchers studied the catalysts in action. (basf.com)

This collaboration has brought us a better understanding of how these solid catalysts work, putting us in the position to unlock the true potential of small metal nanoparticles for CO 2 catalysis," says Bert Weckhuysen, Professor of Inorganic Chemistry and Catalysis at Utrecht University. (basf.com)
As part of Sandia's nanoscale research, a group of experts specializing in inorganic synthesis and characterization, modeling, and radiation science have designed a radical system of experiments to study the science of creating metal and alloy nanoparticles. (science20.com)
In particular, for nondegradable inorganic nanoparticles (NPs) that have demonstrated broad medical applications in the preclinical setting, they are often sequestered by the reticuloendothelial system (such as liver and spleen) and are retained in the body for a long period of time. (advancedsciencenews.com)

Appearance of ruby red colour of the colloidal gold solution results as a formation of small gold nanoparticles [ 4 ]. (hindawi.com)
The properties of the glaze have been well enumerated in 1857 by Michael Faraday in his revolutionary study "Experimental relations of gold (and other metals) to light" [ 3 , 5 ]. (hindawi.com)
for example, tri-sodium citrate [ 7 - 9 ] and sodium borohydride [ 10 ] are being used for the reduction of gold chloride and silver nitrate solutions to form gold and silver nanoparticles, respectively, for decades. (hindawi.com)
Single gold nanoparticle crystals formed using radiolysis at Sandia's Gamma Irradiation Facility (approximately 30 nm in size). (science20.com)
This gold "coin" was made from nanoparticle building blocks, thanks to a new technique developed by Brown University researchers. (scitechdaily.com)
For a new study, the team made metal "coins" from nanoparticles of gold, silver, palladium and other metals. (scitechdaily.com)
For this study, the researchers made centimeter-scale "coins" using nanoparticles of gold, silver, palladium and other metals. (scitechdaily.com)
The optical properties of the gold coins were fascinating, Chen says, as there was a dramatic color change when the nanoparticles were compressed into bulk metal. (scitechdaily.com)
Because of what's known as the plasmonic effect, gold nanoparticles are actually purplish-black in color," Chen said. (scitechdaily.com)
An in situ method has been developed to fabricate gold nanoparticle (Au NP) films on different substrates, regardless of whether they are hydrophilic or hydrophobic surfaces, including glass, 96-well polystyrene plates, and polydimethylsiloxane (PDMS). (nature.com)
To investigate fundamental mechanism on the interactions between molecules and plasomnic nanoparticles which make confined electromagnetic field upon light illumination, we fabricated hybrid thin films consisting of gold or silver nanoparticles and photofunctional organic material such as photochromic compounds and fluorescent dyes. (nii.ac.jp)
Besides, affected by the ever-changing international situation, the supply and prices of international bulk gold nanoparticles are still very uncertain. (mis-asia.com)
One team found that when bacteria came into contact with gold nanoparticles, their cell walls deformed and eventually burst, leaking material and dying. (mis-asia.com)
Gold is an inert metal that does not react or change when it comes into contact with living organisms. (mis-asia.com)
The new study found a mechanism by which gold nanoparticles kill bacteria. (mis-asia.com)
Gold nanoparticles are tiny particles of gold with a diameter of 1-100nm. (mis-asia.com)
Gold nanoparticles come in two forms: solid powder and liquid solution. (mis-asia.com)
Gold nanoparticles solution is sols dispersed in an aqueous solution. (mis-asia.com)
Small gold nanoparticles (2-5nm) appear yellow, medium gold nanoparticles (10-20nm) appear wine red, and larger gold nanoparticles (30-80nm) appear purplish red. (mis-asia.com)
Non-spherical nanoparticles of gold (Au), silver (Ag), and platinum (Pt) due to their fascinating optical properties are finding diverse applications. (wikipedia.org)
In this study, we investigated the feasibility of utilizing surface-enhanced Raman scattering (SERS) to understand the mode of interaction of gold nanoparticles (GNPs) with mitochondria. (nih.gov)
Two types of alkylthiol-terminated poly(acrylic acid) (PAAs, varying in length) are synthesized and used to functionalize gold nanoparticles (AuNPs) to mimic similar assembly effects of single-stranded DNA-capped AuNPs using synthetic polyelectrolytes. (osti.gov)
article{osti_1409368, title = {Interfacial Self-Assembly of Polyelectrolyte-Capped Gold Nanoparticles}, author = {Zhang, Honghu and Nayak, Srikanth and Wang, Wenjie and Mallapragada, Surya and Vaknin, David}, abstractNote = {Here, we report on pH- and salt-responsive assembly of nanoparticles capped with polyelectrolytes at vapor-liquid interfaces. (osti.gov)
Silver, gold, and platinum are the prominent metals in this market. (marketbusinessinsights.com)
When citrate ligands-capped gold nanoparticles are mixed with blood sera, a protein corona is formed on the nanoparticle surface due to the adsorption of various proteins in the blood to the nanoparticles. (acs.org)
Using a two-step gold nanoparticle-enabled dynamic light scattering assay, we discovered that the amount of human immunoglobulin G (IgG) in the gold nanoparticle protein corona is increased in prostate cancer patients compared to noncancer controls. (acs.org)
When HAuCl4 was used instead of AgNO3, it was found that the average diameters of gold nanoparticles synthesized using both photoinitiators at different concentrations ranged between 1 and 4 nm. (bvsalud.org)
The findings suggest that variations in HAuCl4 concentration have minimal impact on the size of gold nanoparticles . (bvsalud.org)

TiO 2 nanoparticle supported catalyst demonstrated higher H 2 O 2 selectivity and higher turnover frequency (TOF) than the catalysts based on TiO 2 nanowires. (rsc.org)

Nanomaterial Powder, is an worldwide manufacturer and supplier of nanoparticles, nanopowders, micron powders, and CNTs (carbon nanotubes) in small quantity for research and in bulk order for industry groups. (nanomaterialpowder.com)

multiple scattering peaks in the UV-vis range are exhibited by anisotropic nanoparticles like rods, triangular prisms, and cubes exhibit as a result of highly localized charge polarizations at corners and edges [ 3 ]. (hindawi.com)
At this scale, roughly 10,000 times thinner than a sheet of paper, iron nanoparticles exposed to an oxygen environment exhibit a unique property-they form exotic structures, such as hollowed-out nanoparticles or nanoshells, which already have been used as electrodes in battery applications and as vehicles for drug delivery in medicine. (labmanager.com)
Metallic glasses are more easily molded than traditional metals, can be much stronger and more crack-resistant, and exhibit superconductivity at low temperatures. (scitechdaily.com)
One of the unintended, adverse consequences of nanotechnology in general is that by making a substance substantially smaller in size than would occur naturally, or though pre-nanotech production processes, the substance may exhibit significantly higher toxicity when in nanoparticle form. (wakeup-world.com)
However, nanoparticles exhibit different dislocation mechanics, which, together with their unique surface structures, results in mechanical properties that are different from the bulk material. (wikipedia.org)
Non-spherical nanoparticles (e.g., prisms, cubes, rods etc.) exhibit shape-dependent and size-dependent (both chemical and physical) properties (anisotropy). (wikipedia.org)
During the past six years, J. Zheng and co-workers at the University of Texas at Dallas have developed a class of ultrasmall noble metal NPs that not only exhibit tunable luminescence but can also be effectively eliminated via the renal system with extremely low systemic accumulation. (advancedsciencenews.com)
These promising results clearly indicate that renal clearable nanoparticles exhibit significantly different in vivo behaviors compared to conventional small organic fluorophores or non-renal clearable engineered NPs. (advancedsciencenews.com)

The team are currently optimising the shapes and geometrical arrangements of the nanoparticles to achieve optimal rates of photochemical rates. (nanomelbourne.com)
We have examined and revealed the effects of localized surface plasmon resonance of metal nanopaparticels on molecular photochemical processes by conventional and single particle spectroscopies. (nii.ac.jp)
Proposed mechanisms for the photochemical formation of nanoparticles through photoinitiated radicals were validated using cyclic voltammetry. (bvsalud.org)

Medieval potteries embellished with glaze or luster display different characteristic colours that result from special optical properties of the glaze which themselves arise due to the random dispersion of metallic spherical nanoparticles within the glaze [ 3 ]. (hindawi.com)
A quick trip down memory lane to the days of high school science class will recall those chapters on material and chemical science defining alloys as a combination of two or more elements, at least one of which is a metal, where the resulting material has metallic properties different - sometimes significantly different - from the properties of its components. (science20.com)
In fact, Chen and his team showed that they could make an exotic form of metal known as a metallic glass. (scitechdaily.com)
Metallic glasses are amorphous, meaning they lack the regularly repeating crystalline structure of normal metals. (scitechdaily.com)
But we were able to start with amorphous palladium nanoparticles and use our technique to make a palladium metallic glass. (scitechdaily.com)
Multi-metallic nanoparticles constitute a new class of materials offering the opportunity to tune the properties via the composition, atomic ordering and size. (nature.com)
Metallic nanoparticles have attracted much attention and have found applications in diff erent fi elds such as medicine, pharmacy, controlled drug delivery, optics, electronics, and other areas. (ac.rs)
However, it has been reported that bare metallic nanoparticles can be toxic. (ac.rs)
Th is supports the concept that this toxicity is associated to the presence of the bare metallic nanoparticle surface, while particles protected by an organic layer, i.e. polymer, are much more biocompatible, and thereby less toxic. (ac.rs)
This review article reports on obtaining metallic nanoparticles with special emphasis on obtaining silver nanoparticles, their incorporation within various polymer materials, physiochemical and biological properties of such obtained systems as well as about their application as medical devices. (ac.rs)
TY - CHAP AU - Stevanović, Magdalena PY - 2014 UR - https://dais.sanu.ac.rs/123456789/15429 AB - Metallic nanoparticles have attracted much attention and have found applications in diff erent fi elds such as medicine, pharmacy, controlled drug delivery, optics, electronics, and other areas. (ac.rs)
Unrelated to the bare metallic surface, several recent studies indicate that, at a cellular level, metal nanoparticles interact with biological molecules within mammalian cells and can interfere with the antioxidant defense mechanism leading to the generation of reactive oxygen species (ROS). (ac.rs)
In this study, the single particle mass spectrometer (SPMS) was applied to explore the composition of DPM, namely the origin of metals and size preferences of metals originating from metallic fuel additives and lube oil. (cdc.gov)

Cu-Ag Alloy Nanoparticles in Hydrogel Nanofibers for the Catalytic Reduction of Organic Compounds. (acs.org)
Customized Silver Alloy Nanoparticles 20-100nm (AgCu AgPt AgSn etc. (hwnanoparticles.com)

Metal nanoparticles/carbon nanotube modified electrodes for voltammetr" by LOKMAN LİV, ZEKERYA DURSUN et al. (tubitak.gov.tr)
This study describes a sensitive and accurate voltammetric method for determination of boron using metal nanoparticles/carbon nanotube modified electrodes. (tubitak.gov.tr)
Welders are exposed to a range of fumes and gases (evaporated metal, metal oxides, hydrocarbons, nanoparticles, ozone, oxides of nitrogen (NOx) ) depending on the electrodes, filler wire and flux materials used in the process, but also physical exposures such as electric and magnetic fields (EMF) and ultraviolet (UV) radiation. (who.int)
Fume particles contain a wide variety of oxides and salts of metals and other compounds, which are produced mainly from electrodes, filler wire and flux materials. (who.int)

Nano titanium carbide is one of the transition metal carbides with the highest hardness, but its brittleness is not suitable for pure use. (actionext.com)
What are Titanium carbide nanoparticles used for? (actionext.com)

Utilising the Electron Beam Lithography (EBL) system, thin film deposition and characterisation tools available at MCN, the team have created networks of precisely controlled metal nanoparticles with precision down to 10nm. (nanomelbourne.com)
Personal exposures were measured for two workers using nanoparticle respiratory deposition samplers for metals and passive badges for specific VOCs. (cdc.gov)

Metal nanoparticles harbour numerous exceptional physiochemical properties absolutely different from those of bulk metal as a function of their extremely small size and large superficial area to volume. (hindawi.com)
The nanoscale dimension and high surface area to volume ratio of nanoparticles makes their physicochemical properties quite different from those of the bulk materials [ 3 , 5 ]. (hindawi.com)
An increase by two orders of magnitude in the photocurrent from a layer of Au nanoparticles to silicon compared to a bulk Au layer is predicted due to an increase in the electromagnetic field strength under the excitation of LPR and due to a significant part of the nanoparticle surface being nonparallel to the incident field polarization. (ufn.ru)
Making bulk metals this way allows for precise of the metal's microstructure, which enhances its mechanical properties. (scitechdaily.com)
Brown University researchers have shown a way to make bulk metals by smashing tiny metal nanoparticles together, which allows for customized grain structures and improved mechanical and other properties. (scitechdaily.com)
These methods work by breaking up the metal's grain structure - the microscopic crystalline domains that form a bulk piece of metal. (scitechdaily.com)
Researchers from Brown University have demonstrated a way to make bulk metals from nanoparticle building blocks. (scitechdaily.com)
This tiered strategy includes characterization of nanoparticles as produced (that is, measured as the bulk material sold by the supplier) and as administered (that is, measured at the point of delivery to a test subject) (Oberdorster et al. (astm.org)
In general, the small size of nanoparticles leads to a lower concentration of point defects compared to their bulk counterparts, but they do support a variety of dislocations that can be visualized using high-resolution electron microscopes. (wikipedia.org)

The main objective of this study was to investigate how the concentration of metal salts influences the size and distribution of the nanoparticles . (bvsalud.org)
The results showed that the concentration of AgNO3 significantly impacted the size of silver nanoparticles , with diameters ranging from 1 to 5 nm at 1 wt% and 3 wt% concentrations, while increasing the concentration to 5 wt% led to an increase in the diameter of silver nanoparticles to 16 nm. (bvsalud.org)

Anisotropic nanoparticles display a specific absorption behavior and stochastic particle orientation under unpolarized light, showing a distinct resonance mode for each excitable axis. (wikipedia.org)

It has been well documented that the optical, electronic, and catalytic properties of metal nanoparticles are functions of nanoparticle size, shape, and crystal structure. (hindawi.com)
Nanoparticles of cobalt possess large magnetic moments-a measure of magnetic strength-and unique catalytic properties, and have potential applications in information storage, energy and medicine. (nanoshel.com)

Based on cascade catalysis amplification driven by glucose oxidase (GOx), a sensitive electrochemical impedimetric aptasensor for protein (carcinoembryonic antigen, CEA as tested model) was proposed by using Cu-based metal-organic frameworks functionalized with Pt nanoparticles, aptamer, hemin and GOx (Pt@CuMOFs-hGq-GOx). (unboundmedicine.com)
In particular, supported bimetallic nanoparticles have generated intense interest in catalysis and electrocatalysis. (nature.com)

Naked metal nanoparticles are synthesized by various physical and chemical methods. (hindawi.com)
Chemical methods involving metal salt reduction in solution enjoy an extra edge over other protocols owing to their relative facileness and capability of controlling particle size along with the attribute of surface tailoring. (hindawi.com)
Many synthesis methods have been proposed, most of which involve nanometric metal particles. (rsc.org)
Three welding methods were included in this study: Shielded-metal arc welding (manual welding), gas metal-arc welding shields (semi-automatic), and fluxed-core arc welding (automated). (who.int)

Owing to the nanoscale dimension (in the range of 1-1000 nm), nanoparticles enjoy a leading edge in the fields of nanoscience and nanotechnology. (hindawi.com)
The production of nanoparticles with specific properties is a branch of nanotechnology. (wikipedia.org)

The approach of A M Brodsky and Yu Ya Gurevich is generalized to photoemission from metal nanoparticles at the excitation of a localized plasmon resonance (LPR) in them. (ufn.ru)
The cross section and the probability amplitude of photoemission from a nanoparticle are obtained analytically, taking into account the LPR excitation and the electromagnetic field and photoelectron mass changes at the metal-environment interface. (ufn.ru)
TY JOUR TI Photoemission from metal nanoparticles AU Protsenko, I. E. AU Uskov, A. V. PB Physics-Uspekhi PY 2012 JO Physics-Uspekhi JF Physics-Uspekhi JA Phys. (ufn.ru)

Carbon Coated Cobalt Nanoparticles potential application in ferrofluids, advanced magnetic materials, catalysts, optical and mechanical devices, high-density magnetic recording media, and medical diagnostics. (nanoshel.com)
Metal nanoparticles are used in a wide range of applications such as catalysts, electronics, pharmaceuticals, and cosmetics. (marketbusinessinsights.com)
Heterogeneous catalysts based on supported metal nanoparticles are commonly used in many industrially relevant catalytic reactions. (eurekaselect.com)
This review examines the existing literature of several types of the supported-metal nanoparticle heterogeneous catalysts. (eurekaselect.com)

1 ) , Anderson ( 2 ) , Gregg and Sing ( 3 ) ) are used to calculate surface area of airborne nanoparticles collected on a filter. (astm.org)
An air quality survey was conducted at a precious metals refinery in order to evaluate worker exposures to airborne metals and to provide detailed characterization of the aerosols. (cdc.gov)

A wide range of nanoparticles (NPs), composed of different elements and their compounds, are being developed by several groups as possible radiosensitisers, with some already in clinical trials. (open.ac.uk)

initially the capture NA strand is immobilised onto the electrode surface, this is then hybridised to the complementary target sequence, which is then followed by target hybridisation to a complementary probe strand which is labelled with a nanoparticle. (dcu.ie)
In particular, noble-metal NP films have been extensively studied because of their versatility, chemical stability, and unique optical properties stemming from localized surface plasmon resonances, which lead to enormous local, nanoscale optical field enhancements. (nature.com)
The results show that the uniform nature of the surface layers of these nanoparticles exerts a mechanical force that stretches the cell walls of the surrounding bacteria, causing the bacteria to burst, much like a balloon bursting when stretched from different points of use. (mis-asia.com)
Herein, we describe the first utilization of zirconium (Zr)-based metal-organic framework (MOF) nanoparticles (NPs) with well-defined surface chemistries for the cryopreservation of red blood cells (RBCs) without the need of any (toxic) organic solvents. (lincoln.ac.uk)
In a review in WIREs Nanomedicine and Nanobiotechnology , they summarized the synthetic strategies for creating different colored luminescent metal NPs, discussed unique size-independent emissions of thiolated metal nanoparticles, and the key factors such as size, surface ligands, and density that governed renal clearance and tumor targeting of these ultrasmall noble metal NPs. (advancedsciencenews.com)
Interestingly, the scientists believe that the size and surface area of the nanoparticles were not responsible for the amount of inflammatory response observed. (technologylawsource.com)

A nanoparticle or ultrafine particle is usually defined as a particle of matter that is between 1 and 100 nanometres (nm) in diameter. (wikipedia.org)

Kenneth Crozier, Associate Professor of Electrical Engineering at the Harvard School of Engineering and Applied Sciences (SEAS), and colleagues have engineered the size and shape of metal nanoparticles so that the color they appear strongly depends on the polarization of the light illuminating them. (nanowerk.com)
By varying the reaction conditions and using alcohols as agents to limit particle growth size, the researchers say they have determined through high-resolution transmission electron microscopy that they have been able to successfully grow particles that are nearly identical, delivering essentially defect-free superalloy metal nanoparticles. (science20.com)
By controlling the size and shape of nanoparticles, their properties can be finely tuned to suit the application required. (dcu.ie)
meanwhile, the size, composition and structure of the bimetallic nanoparticles are precisely controlled by tailoring the precursor pulse sequence. (nature.com)
Nanoparticles are usually distinguished from microparticles (1-1000 µm), "fine particles" (sized between 100 and 2500 nm), and "coarse particles" (ranging from 2500 to 10,000 nm), because their smaller size drives very different physical or chemical properties, like colloidal properties and ultrafast optical effects or electric properties. (wikipedia.org)
citation needed] Nanoclusters are agglomerates of nanoparticles with at least one dimension between 1 and 10 nanometers and a narrow size distribution. (wikipedia.org)
Metal nanoparticles, which are particles with a size range of 1-100 nanometers, have gained widespread attention due to their unique properties and applications across various industries. (marketbusinessinsights.com)
This report gives an account of our work on development of an antimicrobial gel formulation containing silver nanoparticles (SNP) in the size range of 7-20 nm synthesized by a proprietary biostabilization process. (nih.gov)
Size- and Ligand-Dependent Transport of Nanoparticles in Matricaria chamomilla as Demonstrated by Mass Spectroscopy and X-ray Fluorescence Imaging. (acs.org)
The synthesis of nanoparticles was monitored using UV-vis absorption spectroscopy , and their sizes were determined through particle size analysis of transmission electron microscopy (TEM) images. (bvsalud.org)

Here, we have developed a versatile, low-temperature solution synthesis route to alloyed nickel phosphide (Ni1.6M0.4P, where M = Co, Cu, Mo, Pd, Rh, or Ru) nanoparticles (NPs) that retains the structure of the parent Ni2P NPs, allowing investigation of compositional effects on activity without convoluting factors from differences in morphology and crystalline phase. (ornl.gov)

Metal nanoparticles are typically covered with organic molecules called ligands, which generally prevent the formation of metal-metal bonds between particles. (scitechdaily.com)
employment of x-ray techniques for the study of charge transfer reactions and light induced dynamics in metal-organic complexes and Nano-particles. (lu.se)

For some properties, like transparency or turbidity, ultrafiltration, stable dispersion, etc., substantial changes characteristic of nanoparticles are observed for particles as large as 500 nm. (wikipedia.org)

Oxides of nitrogen are found during manual metal arc welding and particularly during gas welding. (who.int)

Snapshots of the 3-D structure of iron nanoparticles in the course of the oxidation process, captured through large-scale reactive molecular dynamic simulations. (labmanager.com)
The possibility of shifting the resonance wavelengths by tuning the particle geometry allows using them in the fields of molecular labeling, biomolecular assays, trace metal detection, or nanotechnical applications. (wikipedia.org)
Proteomic analysis of the nanoparticle protein corona revealed molecular profile differences between cancer and noncancer serum samples. (acs.org)

Metal nanoparticles have demonstrated broad and promising biomedical applications in research laboratories, but to fulfill their potential in the clinic demands extensive effort to minimize their non‐specific accumulation in the body. (advancedsciencenews.com)

This process holds promise as a universal method of nanoparticle formation. (science20.com)
During oxidation of metals, there is a directional flow of material across a solid/gas or solid/liquid interface which can sometimes lead to the formation of holes in the atomic lattice. (labmanager.com)
Further dwelling of such nanocondensates in water caused progressive formation of a rice-like assembly of (Zn,H)-codoped tenorite (CuO) nanoparticles with (001), (100), and {111} preferred orientations, (111) tilt boundary, yellowish color, and minimum bandgap narrowing down to ca. 2.7 eV for potential photocatalytic applications. (springer.com)
The synthetic procedure was the source of this observation: larger mean Pd nanoparticles were present, thus favouring the formation of H 2 O 2 as the primary product. (rsc.org)

Moreover, breathing these particles into the lungs, along with other metals, ethylene glycol and nicotine produces a chemical concoction exhibiting synergistic toxicity, i.e. the toxicity of the whole is higher than the sum of their parts. (wakeup-world.com)

Among the various options available, silver nanoparticles have been the focus of increasing interest and are being heralded as an excellent candidate for therapeutic purposes. (nih.gov)
These results clearly indicate that silver nanoparticles could provide a safer alternative to conventional antimicrobial agents in the form of a topical antimicrobial formulation. (nih.gov)

As a measure of the controlled changes introduced within the isostructural series by the second metal, the binary and alloyed ternary TMP NPs supported on carbon at a nominal 5% weight loading were studied as electrocatalysts for the hydrogen evolution reaction (HER). (ornl.gov)
Carbon Coated Cobalt Nanoparticles have been investigated for hyperthermia application. (nanoshel.com)
Carbon Coated Cobalt Nanoparticles useful within military and commercial applications as a high-performance invisible material for absorbing extremely high frequency (EHF) millimeter wave (MMW), visible light and infrared. (nanoshel.com)
Carbon Coated Cobalt Nanoparticles Soft magnetic Materilas Have potential application in the field of bio engineering as carrier for targeted drug delivery. (nanoshel.com)

Being much smaller than the wavelengths of visible light (400-700 nm), nanoparticles cannot be seen with ordinary optical microscopes, requiring the use of electron microscopes or microscopes with laser. (wikipedia.org)
This report describes an investigation in which NIOSH used iron-doped diesel fuel to generate metal-bearing diesel particles and a subsequent analysis of the particles using transmission electron microscopy (TEM) and energy-dispersive spectroscopy (EDS). (cdc.gov)

Argonne scientists Badri Narayanan (left) and Subramanian Sankaranarayanan (right) are co-authors of the Science paper, titled "Quantitative 3D Evolution of Colloidal Nanoparticle Oxidation in Solution," along with the following researchers (not pictured): Yugang Sun, Xiaobing Zuo, Sheng Peng, and Ganesh Kamath. (labmanager.com)
By using a combination of X-ray scattering and computational simulation, the researchers were able to observe and model the changes in nanoparticle geometry as they occurred. (labmanager.com)
In a paper published in the journal Chem , the researchers show a method for smashing individual metal nanoclusters together to form solid macro-scale hunks of solid metal. (scitechdaily.com)
But the researchers think the process could easily be scaled up to make super-hard metal coatings or larger industrial components. (scitechdaily.com)
Other properties like electrical conduction and light reflectance were virtually identical to standard metals, the researchers found. (scitechdaily.com)
Researchers at the Department of Cell Biology and Neuroscience, University of California Riverside, tested the hypothesis that electronic cigarettes (EC) contain metals from various components in EC. (wakeup-world.com)
In this project, researchers from CSIRO led by MCN Technology Fellow Dr. Daniel Gomez, are creating novel metal nanoparticles capable of efficient light collection and focusing, in order to enhance the efficiency of light-driven chemical reactions. (nanomelbourne.com)
In the lab, the researchers synthesized nanoparticles in the shape of stars and near-perfect spheres, each about 100 nanometers across (an eighth of the diameter of a human hair), to see how they interacted with bacteria. (mis-asia.com)

Applying the adsorption free energy of atomic H (GH) as a descriptor for HER activity revealed a facet-dependent volcano-shaped correlation between the overpotential and GH, with the activity trend well represented by the corrugated (101̅0) surfaces on which metal-metal bridge sites are available for H adsorption but not the flat (0001) surfaces. (ornl.gov)

What is SiO2 nanoparticles used for? (hiphopgalaxy.com)

Transition-metal phosphides (TMPs) are versatile materials with tunable electronic and structural properties that have led to exceptional catalytic performances for important energy applications. (ornl.gov)
5.1 A tiered strategy for characterization of nanoparticle properties is necessary to draw meaningful conclusions concerning dose-response relationships observed during inhalation toxicology experiments. (astm.org)
The properties of nanoparticles often differ markedly from those of larger particles of the same substance. (wikipedia.org)
Companies are investing in research and development activities to enhance the properties and applications of metal nanoparticles. (marketbusinessinsights.com)

Mechanical testing of the metals manufactured using the technique showed that they were up to four times harder than naturally occurring metal structures. (scitechdaily.com)

Controlled Synthesis of Transition Metal Phosphide Nanoparticles to Establish Composition-Dependent Trends in Electrocatalyti. (ornl.gov)
This effect is particularly strong for nanoparticles dispersed in a medium of different composition since the interactions between the two materials at their interface also becomes significant. (wikipedia.org)

Chemicals and Drugs14

Analytical, Diagnostic and Therapeutic Techniques and Equipment6

Phenomena and Processes2

Disciplines and Occupations3

Technology, Industry, Agriculture11

Oxide20

Noble metal nanoparticles2

Reduced to gold nanoparticles1

Synthesis of metal nanoparticles3

Potential of metal nanoparticles1

Abstract1

Types of nanoparticles1

Polymers1

Element nanoparticles1

Nanomaterials3

Form nanoparticles2

Platinum nanoparticles1

Copper nanoparticles1

Aerosol4

Nickel nanoparticles2

Inorganic3

Gold28

Nanowires1

Nanotubes1

Exhibit8

Photochemical3

Metallic13

Alloy2

Electrodes4

Titanium2

Deposition2

Bulk9

Concentration2

Behavior1

Catalytic properties2

Catalysis2

Methods4

Nanotechnology2

Photoemission3

Catalysts4

Airborne2

Compounds1

Surface6

Ultrafine1

Size10

Morphology1

Organic2

Dispersion1

Oxides1

Molecular3

Biomedical Applications1

Formation4

Ethylene glycol1

Silver2

Carbon4

Electron2

Researchers8

Adsorption1

SiO21

Properties4

Structures1

Composition2