title: A novel solid-state thermal rectifier based on reduced graphene oxide.
abstract: Recently, manipulating heat transport by phononic devices has received significant attention, in which phonon--a heat pulse through lattice, is used to carry energy. In addition to heat control, the thermal devices might also have broad applications in the renewable energy engineering, such as thermoelectric energy harvesting. Elementary phononic devices such as diode, transistor and logic devices have been theoretically proposed. In this work, we experimentally create a macroscopic scale thermal rectifier based on reduced graphene oxide. Obvious thermal rectification ratio up to 1.21 under 12 K temperature bias has been observed. Moreover, this ratio can be enhanced further by increasing the asymmetric ratio. Collectively, our results raise the exciting prospect that the realization of macroscopic phononic device with large-area graphene based materials is technologically feasible, which may open up important applications in thermal circuits and thermal management.
authors: Institute of Microelectronics, Tsinghua University, Beijing 100084, China.
authors: He
authors: H
authors: Tian
authors: Dan
authors: D
authors: Xie
authors: Yi
authors: Y
authors: Yang
authors: Tian-Ling
authors: TL
authors: Ren
authors: Gang
authors: G
authors: Zhang
authors: Yu-Feng
authors: YF
authors: Wang
authors: Chang-Jian
authors: CJ
authors: Zhou
authors: Ping-Gang
authors: PG
authors: Peng
authors: Li-Gang
authors: LG
authors: Wang
authors: Li-Tian
authors: LT
authors: Liu