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Thermal management and non-reciprocal control of phonon flow via optomechanics.

ABSTRACT: Engineering phonon transport in physical systems is a subject of interest in the study of materials, and has a crucial role in controlling energy and heat transfer. Of particular interest are non-reciprocal phononic systems, which in direct analogy to electric diodes, provide a directional flow of energy. Here, we propose an engineered nanostructured material, in which tunable non-reciprocal phonon transport is achieved through optomechanical coupling. Our scheme relies on breaking time-reversal symmetry by a spatially varying laser drive, which manipulates low-energy acoustic phonons. Furthermore, we take advantage of developments in the manipulation of high-energy phonons through controlled scattering mechanisms, such as using alloys and introducing disorder. These combined approaches allow us to design an acoustic isolator and a thermal diode. Our proposed device will have potential impact in phonon-based information processing, and heat management in low temperatures.

SUBMITTER: Seif A

PROVIDER: S-EPMC5865216 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature

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Thermal management and non-reciprocal control of phonon flow via optomechanics.

Seif Alireza A DeGottardi Wade W Esfarjani Keivan K Hafezi Mohammad M

Nature communications 20180323 1

Engineering phonon transport in physical systems is a subject of interest in the study of materials, and has a crucial role in controlling energy and heat transfer. Of particular interest are non-reciprocal phononic systems, which in direct analogy to electric diodes, provide a directional flow of energy. Here, we propose an engineered nanostructured material, in which tunable non-reciprocal phonon transport is achieved through optomechanical coupling. Our scheme relies on breaking time-reversal ...[more]

PMID: 29572521

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