Sentences with phrase «metal nanoparticles»
"Metal nanoparticles" refers to very tiny particles made up of metal atoms. These particles are so small that you need a microscope to see them. They have unique properties due to their small size, such as being able to conduct electricity or change color. They are used in various scientific and technological applications, like medicine, electronics, and environmental protection. Full definition
Instead of noble metal nanoparticles, they used single atoms of nickel.
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Fuat Aksoy (Pompe, TUD)-- «Interaction of metal nanoparticles with fluorophores and their effect of fluorescence» (2009)
Nanovitamins for Macroharvests: New Generation Fertilizers Based on Metal Nanoparticles Increased Crop... - PR Newswire (press release)
«Even though there is extensive research into metal nanoparticle synthesis, there really isn't a rational explanation why a nanoparticle is formed,» Dr. Mpourmpakis said.
Novel theory explains how metal nanoparticles form.»
However, a study recently published in Nature Communications by chemical engineers at the University of Pittsburgh's Swanson School of Engineering explains how metal nanoparticles form.
Furthermore, the researchers from Aalto University and University of Jyväskylä have recently shown how DNA origamis can be used in efficient fabrication of custom - shaped metal nanoparticles that could be used in various fields of material sciences.
In February 2007 researchers have successfully generated electricity from heat by trapping organic molecules between metal nanoparticles, an achievement that could pave the way toward the development of a brand new source for energy.
Current solid catalysts that act on liquid or gaseous reagents are often composed of poorly defined metal nanoparticles dispersed randomly on supporting materials with large surface areas.
Through these methods, it has been possible to prepare the conducting metal nanoparticles which could be applied for metal paste, conducting...
Conroy studies the different life stages of metal nanoparticles from nucleation through dissolution.
They demonstrate comparable activity and stability with catalysts comprising precious metal nanoparticles on rare - earth and other reducible oxide supports when used in producing highly purified hydrogen.
Now, a study in mice points to a less invasive way to massage neuronal activity, by injecting metal nanoparticles into the brain and controlling them with magnetic fields.
«Effectively, plasmonic metal nanoparticles act like little antennas that absorb visible or ultraviolet light very efficiently and can do a number of things like generate strong electric fields,» said Henry Everitt, an adjunct professor of physics at Duke and senior research scientist at the Army's Aviation and Missile RD&E Center at Redstone Arsenal, AL. «For the last few years there has been a recognition that this property might be applied to catalysis.»
Millstone says that taken together these observations provide a new platform to investigate the structural origins of small metal nanoparticles» photoluminescence and of alloy formation in general.
«We then subject them to the commercial laser scriber, which generates metal nanoparticles embedded in graphene.
The contrary demands of these devices mean that there are few metal nanoparticles that can enhance performance in PLEDs and PSCs at the same time.
Though metal nanoparticles scatter bright light, researchers have found it difficult to coax them to produce dramatically different colors, Landes said.
Rice's new drawbridge method for color switching incorporates metal nanoparticles that absorb light energy and convert it into plasmons, waves of electrons that flow like a fluid across a particle's surface.
X-ray diffraction pattern data indicated that all the samples obtained by laser ablation presented orthorhombic structures with peaks indicative of Ag and Cu metal nanoparticles.
Nobel metal nanoparticles such as copper and silver exhibit localized surface plasmon resonance which can be utilized to enhance the optical properties suitable for optoelectronic devices.
The situation further deteriorates for trapped metal nanoparticles when the incident light overlaps with a plasmonic resonance, whereby electrons move in response to light collectively, causing enhancements to local fields by several orders of magnitude.
«People have been interested in using silver nanoparticles for antimicrobial purposes, but there are lingering concerns about their environmental impact due to the long - term effects of the used metal nanoparticles released in the environment,» says Velev, the INVISTA Professor of Chemical and Biomolecular Engineering at NC State and the paper's corresponding author.
Nanobarcode: SurroMed's Nanobarcode ™ technology uses cylindrically - shaped colloidal metal nanoparticles, in which the metal composition can be alternated along the length and the size of each metal segment can be controlled.
Transition Metal Nanoparticles The elements in the periodic table are often divided into four categories: (1) main group elements, (2) transition metals, (3) lanthanides, and (4) actinides.
Near Perfect Light Absorption with Random Metal Nanoparticle - decorated Thin Film Solar Absorber
«The special thing is that we can adjust the size and state of the noble metal nanoparticles on the surface of the catalytic converter.
Nature of the active sites for carbon dioxide reduction on metal nanoparticles: suggestions for optimizing performance T. Cheng, Z. Wang, W. A. Goddard
A new method for building «drawbridges» between metal nanoparticles may allow electronics makers to build full - color displays using light - scattering nanoparticles that are similar to the gold materials that medieval artisans used to create red stained - glass.
«Metal nanoparticles with ligands are already printed to form electronics today,» explains the physical chemist Kraus, adding that the shells mostly had to be removed by a sintering process because, while on the one hand they control the arrangement of the nanoparticles, on the other hand, they are not conductive.
SPR is the basis of many standard tools for measuring adsorption of materials onto planar metal (typically gold and silver) surfaces or onto the surface of metal nanoparticles.
«How do you build a metal nanoparticle?
«The structure of the noble metal nanoparticles can be influenced by short - term modifications of the engine operation mode, for instance,» Gänzler says.
Sun's lab had previously shown that metal nanoparticles, when tuned to the right size, could have increased reactivity.
Raising concerns about potential harm to human health, other recent research has shown that some metal nanoparticles can damage DNA or kill cells.
Metal nanoparticles are «spectator species» for this reaction.
By taking clever advantage of the interplay between light, electrons on the surface of metals, and heat, researchers at the National Institute of Standards and Technology (NIST) have for the first time created a plasmomechanical oscillator (PMO), so named because it tightly couples plasmons — the collective oscillations of electrons at the surface of a metal nanoparticle — to the mechanical vibrations of the much larger device it's embedded in.
Due to the combination of both materials, when bent, the electrical conductivity is greater all in all than in a layer that is made purely of conductive polymer or a layer made purely of metal nanoparticles.
Shikuan Yang explained: «First we need to use noble metal nanoparticles, like gold.
In all phases of their efforts, experimentalists are getting help from theorists who apply sophisticated computer models to figure out how all sorts of variables affect performance — from the chemical compositions, sizes and shapes of metal nanoparticles to the detailed architectures of the support structures.
For many applications of the plasmon resonances of metal nanoparticles, it is necessary to have narrow resonance lines.
To make it printable, the metal nanoparticles are mixed with a solvent like ethanol.
Localized surface plasmons are confined to the surface of metal nanoparticles.
The researchers looked at semiconductor quantum dots for this study, but SMA - STM can also be used to explore other nanostructures such as carbon nanotubes, metal nanoparticles or synthetic macromolecules.
New research by scientists shows that when cellular barriers are exposed to metal nanoparticles, cellular messengers are released that may cause damage to the DNA of developing brain cells.