Sentences with phrase «acoustic phonon»
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].
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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.
The combination of temperature dependent micro-Raman and femtosecond reflectivity measurements allows for a complete decoupling of the effects of temperature, geometry, and strain on the acoustic phonon dynamics [2, 3].
The latest investigations on the thermal properties of silicon, the most common material in electronics, micro - and nano - electro - mechanical systems (MEMS and NEMS) and photonics, have pointed to nanostructuring as a highly efficient approach to acoustic phonon engineering [1 - 3].
The capability to tune the acoustic phonon dynamics in technologically relevant group IV nanostructures provides a promising prospect to control the propagation of acoustic and thermal phonons with great implications on nanoscale hypersound and thermal transport.
Not exact matches
The observation suggests that thermal phonons must exist as waves similar to electronic, photonic or acoustic waves.
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.