• Micro- and nanoscale technologies have been consistently used to precisely modify the surface chemistry and/or topography of biomaterials. (osu.edu)
  • Specifically, she is dedicated to understanding the design principles and developing nanoscale and macroscale biomaterials for medical applications, experimental investigations of cell therapies, and integration across multiple disciplines including materials science, chemistry, medical imaging, and life science. (stanford.edu)
  • It also covers the right instrument selection for characterizing surfaces and interfaces - from atomic force microscopes and nano scratch testers to grazing-incidence X-ray scattering (GISAXS). (anton-paar.com)
  • Three routes for use of the silicon lattice parameter have been recognised: x-ray interferometry, transmission electron microscopy and mono atomic silicon steps on silicon substrates for the calibration of atomic force microscopes. (npl.co.uk)
  • Bouncing Droplets: A Hands-On Activity To Demonstrate the Properties and Applications of Superhydrophobic Surface Coatings. (acs.org)
  • V. Zarghami, M. Ghorbani, K. Pooshang Bagheri, M.A. Shokrgozar, 'Melittin antimicrobial peptide thin layer on bone implant chitosan-antibiotic coatings and their bactericidal properties', Materials Chemistry and Physics, 263 (2021): 124432. (sharif.edu)
  • O. Razavizade, M. Ghorbani, 'Surface modifcation of carbon steel by ZnO-graphene nano-hybrid thin film' Surface & coatings Technology, 2019. (sharif.edu)
  • As such, surface modification with ceramic coatings is required in order to achieve proper biomedical features and enhance their overall behavior in the human body. (infim.ro)
  • 8 nm).Ppy NPs effectively augment the conductivity, surface roughness, andthickness of BC composites despite reducing scaffolds' transparency.BC-Ppy composites were flexible (up to 10 mM Ppy), maintained theirintricate 3D extracellular matrix-like mesh structure in all Ppy concentrationstested, and displayed electrical conductivities in the range of nativecardiac tissue. (ibecbarcelona.eu)
  • Furthermore, these materials exhibit tensile strength,surface roughness, and wettability values appropriate for their finaluse as cardiac patches. (ibecbarcelona.eu)
  • This angle is affected by the roughness of the surface and the following models have been developed to describe the "stickiness" or wettability of a self-cleaning surface. (wikipedia.org)
  • This model has been expanded upon to consider surface roughness as a factor in predicting water contact angle on a surface. (wikipedia.org)
  • As the dilution increased, the ceria particles, the pad roughness, and the surfaces of wafer were all in direct contacts with one another during the polishing processAlso original colloidal silica slurry showed 'mixed lubrication' behavior. (mrs.org)
  • Using single calcite crystals with varying surface roughness allows engineers to simplify the complex physics that describes fault movement. (phys.org)
  • The Nano-Medicine Laboratory at OSU is dedicated to the development and implementation of novel micro-/nanoscale platforms (e.g. (osu.edu)
  • In addition, we developed simpler protocols for the fabrication of 3D tissue engineering scaffolds with controlled geometry and chemistry at the micro- and nanoscale. (osu.edu)
  • The Nanoengineering Laboratory works across the technical areas of nanotechnology, instrumentation, materials science, thermal transport, and micro- and nano-manufacturing. (illinois.edu)
  • Micro-dimpled surface by ultrasonic nanocrystal surface modification and its tribological effects. (emanresearch.org)
  • Surface and Lateral Deformations Observed from Nanoscale Scratch Testing of Cu/low-k Dielectric Line Patterns. (mrs.org)
  • This technique markedly improves the SSPM technique in its spatial and potential resolution, making it a better tool for surface potential mapping at the nanoscale. (nanowerk.com)
  • The enhanced and high resolution surface potential imaging that we achieved by ultrasharp and high aspect ratio CNT AFM probes is especially critical for nanoscale features of low potential contrast, with promising applications in the semiconductor industry and biotechnology such as dopant mapping, and label-free protein detection. (nanowerk.com)
  • Tailoring PVDF Membranes Surface Topography and Hydrophobicity by a Sustainable Two-Steps Phase Separation Process. (acs.org)
  • The ability of a surface to self-clean commonly depends on the hydrophobicity or hydrophilicity of the surface. (wikipedia.org)
  • Since the creation of self-cleaning glass, titanium dioxide has also been used to create self-cleaning nanoparticles that can be incorporated into other material surfaces to allow them to self-clean. (wikipedia.org)
  • X-ray photoelectron spectroscopy characterization of the as-synthesized nanoparticles demonstrated consistency with stoichiometric Fe3O4 surface composition. (academic-accelerator.com)
  • For the first time, the growth and coalescence of metallic Ag nanoparticles (NPs) on an Ag2CrO4 surface via fs laser irradiation can be reported. (academic-accelerator.com)
  • Ebrahim Fathabadi H., M. Ghorbani, H. Mokarami Ghartavol, 'Synthesis of multilayered pH-responsive nanocapsules by using tolyltriazole as corrosion inhibitor and ZrO2 nanoparticles as core ', Nano-Structures & Nano-Objects, 26 (2021): 100760. (sharif.edu)
  • V. Zarghami, M. Ghorbani, K. Pooshang Bagheri, M. A. Shokrgozar, 'In vitro bactericidal and drug release properties of vancomycin-amino surface functionalized bioactive glass nanoparticles. (sharif.edu)
  • The cross fertilization of biology, molecular biology, Crystalline bacterial cell surface layers, referred to as S- organic chemistry, material sciences, and physics has opened layers [1-3] have now been identified in hundreds of different up significant opportunities for innovation in previously species of bacteria and represent an almost universal feature unrelated fields. (2medicalcare.com)
  • Materials Chemistry and Physics, 241 (2020): 122423. (sharif.edu)
  • In the physics of solids, surfaces must be intrinsically less energetically favorable than the bulk of a material (the molecules on the surface have more energy compared with the molecules in the bulk of the material), otherwise there would be a driving force for surfaces to be created, removing the bulk of the material (see sublimation). (patsnap.com)
  • Therefore, the photoexcitation process may be used to pre-treat or post-treat the substrate or material, to deposit the silicon-containing material, and to enhance chamber cleaning processes. (patsnap.com)
  • Nano- to microscale surface features, in particular, have the potential to strongly modulate cell behavior through topographical stimulation even in the absence of other chemical/biological cues. (osu.edu)
  • The S&T Department of Chemistry presents Colloquium on Friday afternoons since FS19. (mst.edu)
  • M.A. Razmjoo Khollari, M. Ghorbani, A. Afshar,'Fabrication and characterization of TiO2 deposited black electroless Ni-P solar absorber', Applied Surface Science, 496 (2019): 143632. (sharif.edu)
  • All of these processes create nano-topographical features which imbue a surface with superhydrophobicity. (wikipedia.org)
  • Scientists at LGF develop multiscale models from nano to macroscale, technological solutions for enriching knowledge and design of materials and processes with regard to their functional properties. (manutech-sleight.com)
  • The resulting topography and surface damage were characterized by confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM). (ibecbarcelona.eu)
  • This releases particles of surface material. (phys.org)
  • Zhao, now a researcher at NIST/NIH, first-authored a recent paper about this work in Nanotechnology ( 'Ultrasharp and high aspect ratio carbon nanotube atomic force microscopy probes for enhanced surface potential imaging' ) while a postdoc in Prof. Bryan Huey's group at the University of Connecticut's Institute of Materials Science (IMS). (nanowerk.com)
  • The majority of self-cleaning surfaces can be placed into three categories: superhydrophobic superhydrophilic photocatalytic. (wikipedia.org)
  • Both superhydrophobic and superhydrophilic surfaces have been used as self-cleaning materials. (wikipedia.org)
  • Superhydrophobic surfaces can be created in a number of different ways including plasma or ion etching, crystal growth on a material surface, and nanolithography to name a few. (wikipedia.org)
  • The ultimate goal in developing superhydrophobic surfaces is to recreate the self-cleaning properties of the Lotus Leaf that has the inherent ability to repel all water in nature. (wikipedia.org)
  • The basis for superhydrophobic self-cleaning is the ability of these surfaces to prevent water from spreading out when in contact with the surface. (wikipedia.org)
  • Superhydrophobic self-cleaning surfaces also have low sliding angles which allows for water that is collected on the surface to easily be removed, commonly by gravity. (wikipedia.org)
  • While superhydrophobic surfaces are great for removing any water-based debris, these surfaces likely will not be able to clean away other types of fouling matter such as oil. (wikipedia.org)
  • This mechanism is very different than the aforementioned superhydrophobic surfaces. (wikipedia.org)
  • The Anti-Biofouling Properties of Superhydrophobic Surfaces are Short-Lived. (ucl.ac.uk)
  • 99% twin orientation I. A H 2 etch model is used to explain the 4H-SiC surface morphology for each miscut prior to epitaxy and demonstrate how the surface steps influence the nucleation of B 12 P 2 twin orientations. (osti.gov)
  • To validate the proposed reactive transport model and, furthermore, to extract chemical insight from its parameters, experimental topographies must be considered. (tuwien.ac.at)
  • Dimpled and grooved surfaces were found to be excellent for friction reduction and fluid film thickness improvement, although the level of performance varied on both textured parameters and experiment conditions. (emanresearch.org)
  • In addition, we have also applied the same technique to replicate a rice leaf and have confirmed that replicated artificial rice leaves can exhibit not only a very similar structure of the natural rice leaf but also surface anisotropic wetting. (acs.org)
  • Artificial reproduction of Descemet membrane with respect to topography and similar stiffness offers a potential innovative way to bioengineer a functional CEC monolayer from autologous stem cells. (lww.com)
  • The aims of this review paper are to summarise various fabrication techniques of texturing surfaces, the tribological outcomes of experimental studies on surface texturing and, scope and challenges of using a texturing surface on artificial hip or knee joints. (emanresearch.org)
  • Using well-defined surface texture on artificial hip or knee joints has viable potential. (emanresearch.org)
  • Competences are material science, physico-chemistry of solids (divided and massive), mechanics and chemical engineering. (manutech-sleight.com)
  • Here, using density functional theory the first systematic study of diverse MgFe2O4 surfaces is reported in three types of spinel structures: normal, mixed, inverse, which can have significant impact on the initial lithiation. (academic-accelerator.com)
  • Surface (S)-layer proteins and S-layer fusion proteins incorporating functional sequences, self-assemble into monomolecular lattices on solid supports and on various lipid structures. (2medicalcare.com)
  • In most prokaryotic organisms S-layers surface layers (S-layers) composed of identical protein- have to be considered as non-conservative structures with the aceous subunits represent unique patterning elements and potential to fulfil a broad spectrum of functions [3, 4, 9]. (2medicalcare.com)
  • The talk will discuss electrode materials innovation for interfacing complex proteins with electrode surfaces as well as using them for electrosynthesis of ammonia as well as other value-added products (i.e. chiral amines, chiral imines, polymers, etc.) with a focus on sustainability in the chemical industry. (mst.edu)
  • The influence of bulges produced by laser surface texturing on the sliding friction and wear behavior. (emanresearch.org)
  • I subsequently took up a postdoctoral position in the Laboratory of Biophysics and Surface Analysis (LBSA), School of Pharmacy, University of Nottingham under the direction of Martyn Davies, Saul Tendler and David Jackson. (nottingham.ac.uk)
  • It is greatly anticipated that this PSμM can be extended to mimic many other biostructures, therefore opening new avenues for surface molecular engineering. (acs.org)
  • represent the only wall component and can be so closely One of the great challenges for nano(bio)technology is associated with the plasma membrane that a hydrophobic the creation of supramolecular materials in which the domain of the constituent subunits is actually integrated into constituent units are highly regular molecular nanostructures. (2medicalcare.com)
  • There has been growing interest in the development of electrochemical sensors for direct and real-time monitoring of NO. As the direct electrooxidation of NO requires a relatively high working potential, further surface modification with permselective membranes is required to achieve the desired selectivity for NO via size exclusion or electrostatic repulsion. (intechopen.com)
  • Surface texture is one of the key techniques used in surface modification in order to achieve better tribological outcomes. (emanresearch.org)
  • Through a longstanding collaboration with PTB, NPL has developed x-ray interferometry into a metrological tool for the characterisation of nano displacement sensors including optical interferometers. (npl.co.uk)
  • In our scientific activity at the Division of Physical Chemistry 1 we find it essential to establish long-term goals and policies that are based on an unbiased analysis of the specific situation, rather than an uncritical following of the current trends. (lu.se)
  • During the first pass line scan, the sample topography is imaged by normal tapping mode. (nanowerk.com)
  • The AFM consists of a microscale cantilever with a sharp tip (probe) at its end that is used to scan the specimen surface. (englishgratis.com)
  • Ultralight Programmable Bioinspired Aerogels with an Integrated Multifunctional Surface for Self-Cleaning, Oil Absorption, and Thermal Insulation via Coassembly. (acs.org)
  • An expanded Mise en Pratique (MeP) document was written, as the previous document included only a list of approved absorption lines and hence frequencies of light that could be used. (npl.co.uk)
  • The nanoscratched surfaces were investigated with AFM and SEM to observe the scratch depths and line deformations. (mrs.org)
  • Laser surface micropatterning of dental-grade zirconia (3Y-TZP) was explored with the objective of providing defined linear patterns capable of guiding bone-cell response.A nanosecond (ns-) laser was employed to fabricate microgrooves on the surface of 3Y-TZP discs, yielding three different groove periodicities (i.e., 30, 50 and 100 µm). (ibecbarcelona.eu)
  • Whether cleaning aqueous or organic matter from a surface, water plays an important role in the self-cleaning process. (wikipedia.org)
  • X-Ray diffraction (XRD) and Raman spectroscopy techniques were employed to assess the hydrothermal degradation resistance of the modified topographies. (ibecbarcelona.eu)
  • Accelerated aging tests revealed a slight decrease of the hydrothermal degradation resistance after laser patterning, and the Raman mapping showed the presence of monoclinic phase heterogeneously distributed along the patterned surfaces. (ibecbarcelona.eu)
  • The change in surface properties of zirconia and, subsequently, the effect on cell behavior is unclear. (bvsalud.org)
  • Therefore, argon plasma activation of zirconia seems to be a valuable tool to bioactivate the surface for optimal surface occupation by cells and active cell signaling. (bvsalud.org)
  • For superhydrophilic self-cleaning surfaces, cleaning occurs because water on the surface is able to spread out to a great degree (extremely low water contact angle) to get between any fouling debris and the surface to wash away the debris. (wikipedia.org)
  • Surface free energy or interfacial free energy or surface energy quantifies the disruption of intermolecular bonds that occurs when a surface is created. (patsnap.com)
  • Experimental study on frost-formation characteristics on cold surface of arched copper sample. (ucl.ac.uk)
  • These include modifying the nanocrystalline structure of a cement material for bone tissue engineering applications, and microtopographical manipulation of stimuli-responsive surfaces for cell culture applications among others. (osu.edu)
  • Named the scanning surface potential microscope (SSPM) - also often referred to as Kelvin probe force microscope - this is a variation of the AFM that measures the electrostatic forces (potential) between the probe tip and the surface of a material. (nanowerk.com)
  • Inevitably, the process of creating a complex channel, and then sealing its open surface against another material to create an enclosed channel, is a significant practical obstacle to advances in microfluidic devices. (nature.com)
  • The surface energy may therefore be defined as the excess energy at the surface of a material compared to the bulk, or it is the work required to build an area of a particular surface. (patsnap.com)
  • The integration of implants can be improved physically, but mainly by chemical modifications of the material surface. (bvsalud.org)
  • The PMM group contributes to the Manutech-SLEIGHT Graduate School through the development of a specific knowledge about the metallurgy/mechanical/microstructure consequences induced by laser processing (laser beam melting, laser peening, laser surface texturing). (manutech-sleight.com)
  • Mechanical Seals With Sliding Surface Texture-Model Fluid Flow and Some Aspects of the Laser Forming of the Texture. (emanresearch.org)
  • Numerical analysis of a surface-textured mechanical seal operating in mixed lubrication regime. (emanresearch.org)
  • In the early days of atomic force microscopy (AFM) the scanning force microscope was used to measure charges, dielectric constants, film thickness of insulating layers, photovoltage, and electrical potential of a given surface. (nanowerk.com)
  • Surfaces were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy (XPS), and water contact angle. (bvsalud.org)
  • The Suitable Condition of Using LSPR Model in SERS: LSPR Effect Versus Chemical Effect on Microparticles Surface-Modified with Nanostructures. (nanonics.co.il)
  • If the fluid phase were erupted, the large mass of Br and Cl could have severely impacted the atmospheric chemistry upon eruption. (eurekalert.org)
  • In amplitude modulation, changes in the phase of oscillation can be used to discriminate between different types of materials on the surface. (englishgratis.com)
  • Bioinspired Surfaces with Superwettability: New Insight on Theory, Design, and Applications. (acs.org)
  • Hydrophobic durability characteristics of butterfly wing surface after freezing cycles towards the design of nature inspired antiicing surfaces. (ucl.ac.uk)
  • In addition to the investigations of the surface chemistry of this ALD process [159], there has been increased attention in deliberately exploring the reactive transport in the transport-controlled regime. (tuwien.ac.at)
  • Zhao says that the aspect ratio of silicon AFM probes is not high enough, while CNT length of a commercial CNT AFM probe is too short to sufficiently reduce the non-local electrostatic interactions. (nanowerk.com)
  • Tribological effects of surface texturing on nitriding steel for high-performance engine applications. (emanresearch.org)
  • Using two different data sets and techniques, we present the most accurate Moho surface to date, evidencing abrupt changes throughout the orogen. (eurekalert.org)
  • Attributes of the method that are enhanced by the UV photoexcitation process include removing native oxides prior to deposition, removing volatiles from deposited films, increasing surface energy of the deposited films, increasing the excitation energy of precursors, reducing deposition time, and reducing deposition temperature. (patsnap.com)
  • Colloquia feature invited presentations in all areas of chemistry and describe work accumulated over several years by a research group. (mst.edu)
  • As plasma circulates in a fusion device, the surface of the device that faces the plasma erodes. (phys.org)
  • After Ar plasma activation, surfaces were more hydrophilic. (bvsalud.org)
  • This model is typically an oversimplification of a water droplet on an ideally flat surface. (wikipedia.org)
  • Jelena Fischer studied Chemistry in Chicago, received her PhD from Graz University of Technology and has subsequently been a visiting scientist at the University of California at Davis. (anton-paar.com)
  • By making measurements of the volume, lattice spacing (how far the atoms are apart) and the isotopic composition of the silicon (which types of silicon atoms make up the crystal), the mass of the sphere can be determined and used to define the SI unit of mass. (npl.co.uk)
  • An increase of the hMSC area was identified on all the microgrooved surfaces, although only the 50 µm periodicity, which is closer to the cell size, significantly favored cell elongation and alignment along the grooves. (ibecbarcelona.eu)
  • M4P could inhibit TRPM4 current and downregulate TRPM4 surface expression, therefore prevent hypoxia-induced cell swelling. (academic-accelerator.com)
  • provide the microorganisms with a selection advantage byfunctioning as protective coats, molecule and ion traps, andas a structure involved in cell adhesion, surface recognition *Address correspondence to this author at the Center for Nano- or antifouling [5, 11, 12, 15]. (2medicalcare.com)
  • This amino-rich nanolayer also induced higher bovine serum albumin protein adsorption and caused the cells to migrate slower on the surface after a more extended period of cell settlement as an indication of a better surface anchorage. (bvsalud.org)
  • Several physico-chemical modifications have been developed to improve cell contact with prosthetic oral implant surfaces. (bvsalud.org)