The adjustable thermal resistor by reversibly folding a graphene sheet
  Phononic (thermal) devices are studied such as thermal diode, thermal transistors, thermal logic gates, and thermal memories. However, the thermal resistor has not been demonstrated yet. Here, we propose an instantaneously adjustable thermal resistor by folded graphene. Through theoretical analysis and molecular dynamics simulations, we studied the phonon folding effect and the dependent of thermal resistivity on the length between two folds and the overall length. Further, we discuss on the possibility to realize the instantaneously adjustable thermal resistor in experiment. Our studies bring insights in designing thermal resistor and understanding thermal modulation of 2D materials by adjusting its basic structure parameters. 
Qichen Song, Meng An, Xiandong Chen, Zhan Peng, Jianfeng Zang, Nuo   Yang
cond-mat.mes-hall