lattice vibration वाक्य
उदाहरण वाक्य
मोबाइल
- Temperature-dependent atomic lattice vibrations, or phonons, can broaden the core level components and attenuate the interference patterns in an XPD ( X-Ray Photoelectron Diffraction ) experiment.
- However, as a semiconductor's temperature rises above absolute zero, there is more energy in the semiconductor to spend on lattice vibration and on exciting electrons into the conduction band.
- Ideal, defect-free semiconductors are many-body systems where the interactions of charge-carriers and lattice vibrations have to be considered in addition to the light-matter coupling.
- In solid crystals the shape of absorption bands are determined by the density of states of initial and final states of electronic states or lattice vibrations, called phonons, in the crystal structure.
- Sound ( or lattice vibration ) can be described by a phonon just as light can be considered as photons, and therefore one can state that SASER is the acoustic analogue of the laser.
- In a SASER device, a source ( e . g ., an electric field as a pump ) produces sound waves ( lattice vibrations, phonons ) that travel through an active medium.
- These processes are describable by three-particle correlations ( or higher ) where photon, electron hole pair, and a lattice vibration, i . e ., a phonon, become correlated.
- It's not much harder to understand, and it explains applications like lattice vibrations ( . 5kx ^ 2 ) and rotational contributions to gases'specific heats ( . 5Iw ^ 2 ).
- The modern theory of the heat capacity of solids states that it is due to lattice vibrations in the solid, and was first derived in crude form from this assumption by Albert Einstein, in 1907.
- His work in condensed matter theory primarily involved lattice vibrations ( phonons ) in defective crystals, where he was the first to show how to include short-range order among defects in the vibrational theory of alloys.
- Phonon ( quantized lattice vibration wave ) is a central thermal energy carrier contributing to heat capacity ( sensible heat storage ) and conductive heat transfer in condensed phase, and plays very important role in thermal energy conversion.
- This three-phonon transition is mirrored in emission when the excited state quickly decays to its zero-point lattice vibration level by means of a radiationless process, and from there to the ground state via photon emission.
- The exchange of virtual phonons ( quantized lattice vibration ) provides for such an attractive force, but in case of gold you don't get an atractive interaction . talk ) 20 : 57, 28 April 2014 ( UTC)
- These higher energy photons will be absorbed by the solar cell, but the difference in energy between these photons and the silicon band gap is converted into heat ( via lattice vibrations called phonons ) rather than into usable electrical energy.
- The energy eigenstates of the linear harmonic oscillator ( e . g ., masses on springs, lattice vibrations in a solid, vibrational motions of nuclei in molecules, or oscillations in the electromagnetic field ) are fixed-number quantum states.
- In 1941, Foldy graduated with a B . S . degree in physics from the Case School of Applied Science ( now renamed to the " Case School of Engineering " ), his senior thesis was on crystal lattice vibrations.
- These energy fluctuations are caused by random lattice vibrations, which can be viewed as a gas of phonons . ( The random motion of the atoms in the lattice is what we usually think of as heat . ) Because these phonons are generated by the temperature of the lattice, they are sometimes designated thermal phonons.
- He has published results in convolution equations, factorization of matrix functions and Wiener Hopf equations, spectral invariants, non-standard analysis and singular perturbations of ordinary differential equations, elliptic operators on manifolds of bounded geometry, non-linear equations, Lefschetz-type formulas, von Neumann algebras and topology of non-simply connected manifolds, idempotent analysis, The Riemann & ndash; Roch theorem for general elliptic operators, spectra of magnetic Schr�dinger operators and geometric theory of lattice vibrations and specific heat.
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