论文标题
多层石墨烯中的电气控制热传输
Electrically controlled heat transport in multilayer graphene
论文作者
论文摘要
由于缺乏有效的电热材料，使用电信号控制热传输的能力一直是一项重大挑战。先前的尝试主要集中在相变和分层材料上，并遇到了各种问题，例如低导电率和适度的开/关比。在这里，我们演示了一个基于石墨烯的电热开关，可实现电气可调的热流。该设备利用离子的可逆电解度通过通过电动调音声子散射来调节石墨烯膜的平面内电导率。我们预计我们的结果可以为自适应热传输提供现实的途径，从而实现新的电动热驱动器件，从而在航空航天和微电子中找到广泛的应用。
The ability to control heat transport with electrical signals has been an outstanding challenge due to the lack of efficient electrothermal materials. Previous attempts have mainly concentrated on phase-change and layered materials and encountered various problems such as low thermal conductivities and modest on/off ratios. Here, we demonstrate a graphene-based electrothermal switch enabling electrically tuneable heat flow. The device uses reversible electro-intercalation of ions to modulate the in-plane thermal conductivity of graphene film by over thirteen-fold via electrically tuneable phonon scattering. We anticipate that our results could provide a realistic pathway for adaptive thermal transport enabling a new class of electrically driven thermal devices which would find a broad spectrum of applications in aerospace and microelectronics.
