Sentences with phrase «of phonons»

In this paper, by solving the Boltzmann transport equation (BTE) based on first - principles calculations, we performed a comprehensive study of the phonon transport properties of ML GaN, with detailed comparison to bulk GaN, 2D graphene, silicene and ML BN with similar honeycomb structure.

Our study offers fundamental understanding of phonon transport in ML GaN within the framework of BTE and further electronic structure, which will enrich the studies of nanoscale phonon transport in 2D materials and shed light on further studies.

The interdisciplinary team of researchers, led by Alexander Balandin, distinguished professor of electrical and computer engineering, used ultraviolet Raman spectroscopy to investigate how spin ordering affects the energies of phonons in these materials.

The energies of these phonons matched those of crystalline silicon.

Our results, together with experimental measurements of the phonon dispersion curve, allow us to predict the nature of the droplet.

Even in the case of the extensively studied group IV semiconductors, measurements of phonon lifetimes are scarce and the impact of strain engineering is not well understood.

Although classical size effects on phonon heat conduction are now well - established and understood, manipulating phonon heat conduction via waves is still a dream to be realized due to the broadband and short wavelength nature of phonons.

Geometry induced scattering of phonons on grain boundaries, surfaces, several defects, voids, and dislocations as in realistic nanocomposite which all contribute to reducing thermal conductivity, are investigated.

The triangular structure must be tiny in width to make possible the «lateral confinement» of phonons needed for the effect.

This interference could potentially be used to modify the velocity of phonons and the density of states, creating energy bandgaps that are forbidden for phonon waves.

But handled properly it could become a powerful ally — and usher in the age of phonon computing

This illustration shows the emission of phonons (sound waves) from a nanometer scale waveguide, as optical waves flow through it.

They are now asking a different question: is it possible to use the same light field to «see» the vacuum fluctuations of the nanostring (a consequence of its phonon ¬ - like nature)?

Henry's successes in capturing the atomic vibrations of glass was due to the development of a new way of studying the dynamics of phonons, which he'd created with with Wei Lv, a doctoral student in his lab, Known as Green - Kubo Modal Analysis (GKMA), the new method uses molecular dynamics simulations to more accurately calculate the contributions different modes of vibration make to the heat conduction.

The transport of heat in amorphous silicon is determined by the behavior of phonons in the material.

In a solid, the absorption of a phonon makes an atom vibrate in its bonds with neighboring atoms; releasing the phonon allows the atom to relax.

The arrangement of those bonds determines the frequency of phonons that an atom can absorb.

In semiconductors and dielectrics, heat typically flows in the form of phonons — wavelike particles that carry heat through a material and experience various scatterings during their propagation.

The simulations of phonon dispersions, when plugged into software developed by the team, showed good agreement with the neutron scattering measurements taken at the SNS and HFIR by co-lead author Chen Li, also a postdoctoral fellow on Delaire's team.

There are a variety of phonons, but to conserve the electron's momentum, these phonons have to be of a particular momentum and energy.

Because of phonon boundary scattering, thermal transport in such structures strongly depends on the dimensions and the surface state (roughness) and is still not fully understood.

Systematic analysis is performed based on the study of the contribution from phonon branches, comparison among the mode level phonon group velocity and lifetime, the detailed process and channels of phonon — phonon scattering, and phonon anharmonicity with potential energy well.

In comparison, the control of phonons is still falling short.

Calculation of Phonon transport through molecular junctions between graphene sheets via Green's functions technique through DFTB

Considering all these applications are inevitably involved with thermal transport, systematic investigation of the phonon transport properties of 2D GaN is in demand.

She investigated the effects of phonon confinement and electron - phonon interactions in nanostructures, and provided the key insights that underlie today's research into nanostructured thermoelectrics.

Stop the Phonons is an upbeat song that takes a look at the role of phonons within a thermoelectric generator.

The «Queen of Carbon» received the 2012 Kavli Prize in nanoscience «for her pioneering contributions to the study of phonons, electron - phonon interactions, and thermal transport in nanostructures.»

Resume: Although classical size effects on phonon heat conduction are now well - established and understood, manipulating phonon heat conduction via waves is still a dream to be realized due to the broadband and short wavelength nature of phonons.

In order for lateral confinement to be produced, the cross section of the structure must be much smaller than the «mean free path» of a phonon, or only a few to hundreds of nanometers depending on the material, Wang said.

THE 2012 KAVLI PRIZE IN NANOSCIENCE is awarded to Mildred Dresselhaus «for her pioneering contributions to the study of phonons, electron - phonon interactions, and thermal transport in nanostructures.»

Professor Arne Skjeltorp, of the University of Oslo, and chairman of the Kavli Nanoscience Prize Committee, said that, while an award could have been made for Professor Dresselhaus» work in the field as a whole, members of the committee wanted to honor her for her specific advances in the study of phonons, electron - phonon interactions, and thermal transport in nanostructures.

Professor Arne Skjeltorp, of the University of Oslo, and chairman of the Kavli Nanoscience Prize Committee, said that, while an award could have been made for Professor Dresselhaus» work in the field as a whole, members of the committee wanted to honour her for her specific advances in the study of phonons, electron - phonon interactions and thermal transport in nanostructures.

The Kavli Prize in Nanoscience is given to Mildred S. Dresselhaus, Massachusetts Institute of Technology, USA, «for her pioneering contributions to the study of phonons, electron - phonon interactions, and thermal transport in nanostructures.»

«for her pioneering contributions to the study of phonons, electron - phonon interactions, and thermal transport in nanostructures»