2-7 June 2019
Simon Fraser University
America/Vancouver timezone
Welcome to the 2019 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2019 !

31 - Thermal Conductances of Silicon Phononic Crystals by Molecular Dynamics

Jun 4, 2019, 4:57 PM
SWH 9082 + AQ South-East Corner / coin sud-est (Simon Fraser University)

SWH 9082 + AQ South-East Corner / coin sud-est

Simon Fraser University

Poster not-in-competition (Graduate Student) / Affiche non-compétitive (Étudiant(e) du 2e ou 3e cycle) Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM) DCMMP Poster Session & Student Poster Competition Finals (10) | Session d'affiches DPMCM et finales du concours d'affiches étudiantes (10)


Mr Alexander Robillard (Laurentian)


Silicon nanostructures are candidates for thermoelectric materials and can be used to effectively harvest energy if they can be designed in such a way as to improve their thermodynamic figure of merit. In silicon this is achieved primarily by reducing thermal conductivity through clever design minimizing heat transport. Phononic crystals are a form of acoustic metamaterial that aim to do this through periodic inclusions in a larger nanostructure. First, the design and application of phononic crystals is discussed. We then present the thermal conductances, a quantity related to the thermal conductivity, of honeycomb silicon phononic crystals calculated using molecular dynamics simulations. Calculations show that the presented phononic crystals exhibit greatly reduced thermal conductances, and their length scaling is different from bulk and nanowire systems, indicating differences in the primary mechanisms of heat transport.

Primary authors

Mr Alexander Robillard (Laurentian) Prof. Ralf Meyer (Laurentian University)

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