石墨烯
材料科学
富勒烯
异质结
热的
纳米技术
工作(物理)
热阻
热导率
界面热阻
复合材料
化学物理
光电子学
热力学
有机化学
化学
物理
作者
Yixuan Xue,Harold S. Park,Jin-Wu Jiang
标识
DOI:10.1016/j.ijheatmasstransfer.2023.124222
摘要
Switchable thermal devices are attracting significant research interest as a basic thermal management component. In this work, taking graphene/fullerene/graphene sandwiches as an example, we demonstrate that the interfacial thermal resistance can show a switchable, step-like change by varying the number of fullerenes in the sandwich structure. Changing the number of fullerenes causes a structural transition between the graphene layers from adhered to separated, resulting in an enhancement of about a factor of two in the interfacial thermal resistance during this on/off switchable phenomenon, which we analyze using analytic expressions based on the thermal transport theory. We further illustrate that the switchable phenomenon can also be realized by applying mechanical strain or by varying the temperature of the sandwich structure. This work demonstrates that the sandwich-liked nanoscale heterostructures can exhibit hysteretic changes in heat transport, and thus have promise for potential applications in switchable thermal devices.
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