Interference, scattering, and transmission of acoustic phonons in Si phononic crystals
Source abstract
Abstract
ABSTRACT The transient processes of phonon scattering and transmission in Si phononic crystals with periodic pores are simulated using the concurrent atomistic-continuum method. The nature of phonon transport is demonstrated to be dependent on the relation between the phonon wavelength, λ, the period length, p, and the neck width, n, of the phononic crystal. Three distinct regimes have been observed: (1) phonons with wavelengths equal to 2.9p or larger propagate predominantly ballistically, which is accompanied by specular reflection of varying extents, depending on the wavelength of the phonons; the properties of these phonons are consistent with the phonon dispersion relations of the phononic crystal modelled as a homogenous and harmonic system; (2) phonons with wavelengths
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Acoustic Wave Phenomena Research · Thermal properties of materials · Thermal Radiation and Cooling Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (66)
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