Sentences with phrase «by phonon»

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

«The result is a two - dimensional solid where the atoms are held together and talk to each other not by phonons — as in regular matter — but by photons.

Someone who thinks that heat is transferred by phonons, and that phonons have a characteristic momentum (mass and velocity).

Not exact matches

Although the negatively charged particles typically repel one another, two electrons can bind together by exchanging phonons, or quantum packets of vibration, via the lattice of ions within these materials.

CDMS has hockey - puck - size pieces of germanium or silicon topped by a delicate recording device, a phonon sensor.

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.

The new system, described in the March 5 edition of the journal Nature Communications, combines photons and phonons — electromagnetic energy and sound energy — to conduct sophisticated signal processing tasks by harnessing the properties of lower - velocity acoustic waves.

Called the quantum phonon, this subatomic acoustical wave can be detected only by intricate instruments that distinguish pure silence from its smallest possible deviation.

Recently physicists led by Per Delsing of the Chalmers University of Technology in Sweden created such a mechanical ear, which could soon tune in on the phonon's minuscule notes.

«The simplest way for a phonon to cross an interface is by a two - phonon elastic processes: a phonon comes in, a phonon of the same frequency goes out.»

The energy in the phonons is measured as heat in the superconducting detectors, and the charge signal is measured by the charge detectors.

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

A sonic black hole ought to act in the same way by releasing phonons, or packets of sound energy.

When co-author Zhaoming Zhu, Gauthier's postdoctoral research associate, encoded information onto one of these beams, the data could be imprinted on these newly created phonons and retained for 12 billionths of a second, long enough to be transferred back to light again by shining a third laser through the fiber.

The saser built by Jean - Yves Prieur and his colleagues at the University of Paris - South in Orsay and the Pierre and Marie Curie University collects phonons the way a laser does photons.

By varying the size of heat sources, Chen and his colleagues can map out how far phonons travel between collisions, and how much they contribute to heat conduction.

In silicon, by contrast, they lose energy indirectly, by a process involving vibrations of the atoms in the crystal, called phonons.

The strong spin - phonon coupling may be caused by the outermost orbitals of osmium atoms as they are greatly extended outward in space, in the solid oxide.

Phonons represent units of energy produced by vibrating atoms in a crystal lattice.

A research team led by Kazunari Yamaura, chief researcher, Superconducting Properties Unit, National Institute for Materials Science (NIMS), Japan, and Dr. Stuart Calder and others at the Oak Ridge National Laboratory in the United States, jointly demonstrated that the strongest ever spin - phonon coupling was observed in osmium oxide synthesized for the first time in the world by NIMS in 2009.

The role of vibrational entropy in stabilizing or destabilizing the amorphous phase was determined by measuring the phonons through the glass transition.

Resume: Progress in the last few decades in nano - scale thermal transport has enabled a significant degree of control over heat and sound propagation by lattice vibrations - phonons.

Phonon Density of States (DOS) were computed by Molecular Dynamics for different regions in the structure.

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.

We found that, different from graphene and ML BN, the phonon — phonon scattering selection rule in 2D GaN is slightly broken by the lowered symmetry due to the large difference in the atomic radius and mass between Ga and N atoms.

Progress in the last few decades in nano - scale thermal transport has enabled a significant degree of control over heat and sound propagation by lattice vibrations - phonons.

Simulations show that although high frequency phonons are scattering by roughness, remaining long wavelength phonons maintain their phase and traverse the superlattices ballistically.

Logical operations using phonons to switch, amplify and route signals can be realized by nanoscaling.

Phonon properties have been studied by Green's functions phonon transport method through Density Functional based Tight Binding theory, implemented into DFTB paPhonon properties have been studied by Green's functions phonon transport method through Density Functional based Tight Binding theory, implemented into DFTB paphonon transport method through Density Functional based Tight Binding theory, implemented into DFTB package.

We show further that phonon heat conduction localization happens in GaAs / AlAs superlattice by placing ErAs nanodots at interfaces.

We find that the divergence of the thermal expansion coefficients near the phase transition in GeTe is induced by acoustic phonon coupling to soft TO modes.

Michael's research showed how electrons absorb and emit phonons when bombarded by sound waves.

It is shown that the acoustic phonon lifetimes can be tuned both by strain engineering of the suspended structures and strain modification by temperature variation in addition to a strong dependence on the thickness of the suspended structures [1].

Resulting from the special sp orbital hybridization mediated by the Ga - d orbital in ML GaN, the strongly polarized Ga — N bond, localized charge density, and its inhomogeneous distribution induce large phonon anharmonicity and lead to the intrinsic low κ of ML GaN.

She investigated and helped explain the fundamental interactions between electrons and phonons in nanostructures, and by the year 2000 was able to isolate the Raman spectra from individual nanotubes.

The scientists induced vibrations in the diamonds, creating a phonon, and showed that it was shared between them even though they were separated by a distance of about 15 centimeters — definitely a measurement in the macro world («spooky action at a distance,» as Einstein put it).

Researchers at the SHINES center showed that they could control phonons by confining them in a field of nanowires.

Neel) will cover phonons in solid materials while phonons in biological matter will be addressed by Prof Thomas Dehoux (University of Bordeaux).

In glass microcavities that function as optical whispering galleries, according to Bahl, these miniscule optical forces can be enhanced by many orders - of - magnitude, which enables «conversations» between light (photons) and vibration (phonons).

Phonon, Impulsonic's flagship product, allows the authoring of environmental audio effects like reverb, occlusion, and 3D positional audio by modeling the physics of sound.