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Suppressing phonon transport in nanowires: a simple model for phonon-surface roughness interaction

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 نشر من قبل K. A. Muttalib
 تاريخ النشر 2017
  مجال البحث فيزياء
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Suppressing phonon propagation in nanowires is an essential goal towards achieving efficient thermoelectric devices. Recent experiments have shown unambiguously that surface roughness is a key factor that can reduce the thermal conductivity well below the Casimir limit in thin crystalline silicon nanowires. We use insights gained from the experimental studies to construct a simple analytically tractable model of the phonon-surface roughness interaction that provides a better theoretical understanding of the effects of surface roughness on the thermal conductivity, which could potentially help in designing better thermoelectric devices.

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