(redirected from Acoustic phonon)
Also found in: Encyclopedia.
Related to Acoustic phonon: Optical phonon


The quantum of acoustic or vibrational energy, considered as a quasiparticle and used especially in mathematical models to calculate thermal and vibrational properties of solids.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(General Physics) physics a quantum of vibrational energy in the acoustic vibrations of a crystal lattice
[C20: from phono- + -on]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈfoʊ nɒn)

a quantum of sound or vibratory elastic energy, being the mechanical analogue of a photon.
[1932; < Greek phōn(ḗ) sound + -on1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
For example, it converges to 1.5 x [10.sup.-8] W[OMEGA]/[K.sup.2] for nondegenerate semiconductors with a parabolic band and acoustic phonon scattering, while it changes with various parameters (chemical potential, band structure, etc.) for semiconductors between the degenerate and nondegenerate limits [44].
where [k.sub.s] and [k.sub.i]; are the wavevector of the scattered and the incident photon, and q the wavevector of the acoustic phonon (Fig.
The Monte Carlo model includes polar optical, acoustic phonon, ionized impurity and non-polar inter-valley phonon scattering which are the most important mechanisms that affect on the electron motion in the material (Jacoboni, 1989; Ridley, 1993).
by using the nonorthogonal tight-binding method of Varma and Weber to explain the longitudinal acoustic phonon softening [2].
They used this approach to observe the strong modification of acoustic phonon group velocity and enhanced phonon scattering rate due to boundary scattering in semiconductor quantum wells, so as to successfully explain their significantly reduced lattice thermal conductivity [2].
As a consequence, the low frequency longitudinal acoustic phonon modes, which carry thermal energy efficiently in a SWCNT, must transform into phonon modes which are efficient energy carriers of thermal energy in graphene, for example, the in-plane modes, and then back to the preferred phonon modes in SWCNTs.
Second, a more minor point, CNTs have specific phonon dispersion relations close to the r point where acoustic phonon branches have special properties with zero frequencies.
Given that the input is just a few acoustic phonons, the factor of 21 is traditionally required to provide enough gain for an easily measurable signal.
Kubakaddi, "Interaction of massless Dirac electrons with acoustic phonons in graphene at low temperatures," Physical Review Journals, vol.

Full browser ?