Abstract
Maintaining thermal gradient inside a thermoelectric device is a key for sustainable energy conversion from heat to electricity. Here, we propose a metamaterial perfect absorber which induce a sustainable thermal gradient inside a thermoelectric device by emitting local heat via absorption of thermal radiation released from a heat source. The metamaterial perfect absorber can absorb the thermal radiation emitted from a heat source via a magnetic resonance mode and emit the plasmonic local heat as a consequence of plasmon loss. Metamaterial perfect absorber attached on a top of a thermoelectric device absorbs radiation heat and generate plasmonic local heat, which propagate to the underneath thermoelectric device, leading to a thermal gradient inside the device. Power generation efficiency of the thermoelectric device with metamaterial perfect absorber is estimated by numerical and experimentally.
Published Version
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