Sentences with phrase «nanostructures by»

Researchers create the plasma arc between two carbon electrodes, producing a hot carbon vapor composed of atomic nuclei and molecules that cool and synthesize — or condense — into particles that grow into nanostructures by bunching together.

The good news is that a nonlinear light scattering theory, developed for nanostructures by Dutch scientist Sylvie Roke, does.

Generating gradient germanium nanostructures by shock - induced amorphization and crystallization

Nanostructuring by laser is an attractive approach to provide laser induced periodic surface structures (LIPSS) on supported amorphous polymer films.

Not exact matches

* Top Image: Adapted with permission from Elaboration of Nanostructured Biointerfaces with Tunable Degree of Coverage by Protein Nanotubes Using Electrophoretic Deposition

Though it enables precise atom - by - atom fabrication of nanostructures, the process is very slow because the low density of adsorbed gas molecules in the vacuum environment limits the amount of material available for fabrication.

Other times, colors are made by nanostructures that scatter light, a phenomenon called structural color.

A physicist by training whose work on the optical properties of semiconductors yielded a Masters degree, a Ph.D., and a 3 - year postdoc, Emiliani has moved from optical spectroscopy to microscopy and from semiconductors to semiconductor nanostructures and, eventually, to biological systems.

«What's interesting about this hologram is that it controls only the phase of the light by varying the orientation of the silicon nanostructures.

Until now, heat transport in nanostructured materials has largely been controlled by introduction of atomic - scale impurities, interfaces, surfaces and nanoparticles that reduce heat flow by scattering the phonons diffusely.

ARPA — E also gave $ 4.4 million in October 2009 to a group led by physicist George Hadjipanayis of the University of Delaware to create a nanostructured version of the neodymium iron boron magnet that eliminates the need for as much neodymium.

I'm not sure if they exist in nature, but I think we can create them by designing nanostructures.

Unlike pigments, which create color by absorbing some wavelengths of light and reflecting the rest, the nanostructures are shaped so that they physically bend and scatter light in different directions, sending particular colors back to our eyes.

In one recent study, they obtained good results by incorporating ruthenium ions into a sheet - like nanostructure composed of carbon nitride.

They did so by reworking the light bulb's metal light emitter into a flat sheet and flanking it on either side with nanostructured mirrors.

SERS is a surface - sensitive technique that enhances the inelastic scattering of photons by molecules adsorbed on rough metal surfaces or by nanostructures.

By the integration of smallest carbon nanotubes into a nanostructured waveguide, they have developed a compact miniaturized switching element that converts electric signals into clearly defined optical signals.

This, the team hopes, can be done by improving the water yield of human - made dew condensers that mimick the nanostructure on the beetle's back.

However, thermodynamic equilibrium forces nanostructures to minimize open surface driven by energy minimization principle.

By adding semiconducting nanoparticles to polymers, the Materials + Technologies Research Group (GMT) of the Polytechnical College of San Sebastian of the UPV / EHU - University of the Basque Country has created nanostructured composite materials with specific optical and electrical properties that vary according to size.

-- «such nanostructures deteriorate and it is impossible to alter the emission spectrum by having a nanostructure directly on the surface of the emitter.»

The device works by using periodic nanostructures, 10,000 times smaller than the width of a human hair, to separate the different frequencies of light from each other.

An example of this kind of coloring by light interference is found in nature: Squids can modify the nanostructure of their skin to mirror back their surrounding environment, creating a natural camouflage.

A thin 3D photonic crystal with a diamond - like nanostructure is illuminated by white light from any incident direction (black arrow).

Metalenses — flat surfaces that use nanostructures to focus light — promise to revolutionize optics by replacing the bulky, curved lenses currently used in optical devices with a simple, flat surface.

Now, researchers led by Xiaoyu «Rayne» Zheng, an assistant professor of mechanical engineering at Virginia Tech have published a study in the journal Nature Materials that describes a new process to create lightweight, strong and super elastic 3 - D printed metallic nanostructured materials with unprecedented scalability, a full seven orders of magnitude control of arbitrary 3 - D architectures.

The Stanford team has succeeded where others have come up short by turning to nanostructured photonic materials.

Researchers at the University of Illinois at Urbana - Champaign have developed a unique process for geometrically transforming two dimensional (2D) micro / nanostructures into extended 3D layouts by exploiting mechanics principles similar to those found in children's «pop - up» books.

The device enhances the sensing properties of the technique by creating «hot spots,» or narrow gaps within the nanostructure which intensified the Raman signal, the researchers said.

They first identified how different nanostructure patterns grow on nanowires by conducting energy calculations in a theoretical analysis before analyzing these patterns by performing numerical simulations.

The work is part of a major research effort on perovskite materials being led by Stranks, within MIT's Organic and Nanostructured Electronics Laboratory.

One aspect of their work studies how cell signaling pathways, such as those that initiate cell growth or death, are affected by the nanostructures and microstructures of implant materials such as titanium.

A nanostructure inspired by the natural world repels water droplets and could prevent icing on airplane wings and other structures

The study performed by Wegener and Schittny was funded by the DFG Center for Functional Nanostructures (CFN) and represents pure fundamental research to demonstrate the principle.

By «crumpling» to increase the surface area of graphene - gold nanostructures, researchers from the University of Illinois at Urbana - Champaign have improved the sensitivity of these materials, opening the door to novel opportunities in electronics and optical sensing applications.

She and her research group recently demonstrated CLAIRE's imaging capabilities by applying the technique to aluminum nanostructures and polymer films that could not have been directly imaged with electron microscopy.

A variety of asymmetric hollow - core three - dimensional nanostructures fabricated by illuminating light on nanoparticles.

«In our demonstration, we obtained optical images of aluminum nanostructures with 46 nanometer resolution, then validated the non-invasiveness of CLAIRE by imaging a conjugated polymer film.

«This work demonstrates the unique capability of micro-to-nanoscale topographies of the crumpled graphene - Au nanoparticles — higher density, three - dimensional optically active materials — that are further enhanced by the formation of hot spots, bringing the nanoparticles closer,» explained Juyoung Leem, a graduate student and first author of the study, «Mechanically Self - Assembled, Three - Dimensional Graphene?Gold Hybrid Nanostructures for Advanced Nanoplasmonic Sensors,» published in Nano Letters.

The fabricated geometry can be controlled by the particle parameters and illumination configurations, enabling the fabrication of a large variety of asymmetric hollow nanostructures.

Scientists have discovered a completely new type of opal formed by a common seaweed which harnesses natural technology by self - assembling a nanostructure of oil droplets to control how light reflects from its cells to display a shimmering array of colors...

Two different types of slippery surfaces infused with silicone oil as a lubricant were evaluated: a very thin, silica - based and nanostructured 2D coating applied layer - by - layer (i - LBL) and a thicker, matrix - like 3D coating made of the common polymer polydimethylsiloxane (i - PDMS).

He has made pioneering discoveries in plasmonic cloaking (caused by the interaction of light and metal nanostructures) and invisibility, optical nanocircuits and nanoantennas, non-reciprocal devices, and giant nonlinear response in optical metamaterials.

Lattice thermal transport can be surpressed by phonon nesting, resonance, nanostructure, and etc..

There, she studied how strain state and interface structure in oxide nanostructured materials grown by a solution route changed the material's superconductivity, magnetism and other properties.

By using bimetallic nanostructures, we can fine tune the particle sizes and hence control the pillar dimensions.

In this work, we propose an in - situ carbon doped SnS2 nanostructure system with limited average lifetime of photo - generated electrons and holes by shortening the diffusion time so that they can reach the reaction sites before losing their energy.

In parallel experiments, the researchers were also able to re-create a nanostructure similar to that which they discovered in the shell by adding osteopontin to mineral crystals grown in the lab.

Structural characterization by Atomic Force Microscopy (AFM) and by Grazing Incidence X-ray Scattering at Small angles (GISAXS) reveals that the nanostructuring process proceeds by melting and recrystallization of the semicrystalline domain.

Besides, the optical properties of the nanostructured films, strongly affected by their plasmon resonances, are studied by variable - angle spectroscopic ellipsometry.