Non-contact thermal transistor effects modulated by nanoscale mechanical deformation

Thermal management has become a promising field in recent years due to the limitation of energy resources and global warming. An important topic improving efficiency thermal utilization is how control flows heat, rectifiers, such as transistor, have been proposed units for modulating flow heat. In this work, reconfigurable non-contact transistor with two-dimensional grating introduced. The consists three parts: source, gate, drain, gate working around phase-transition temperature vanadium dioxide, type material. Results show that unit clear transistor-like behavior. surface phonon/plasmon polaritons supported by insulating/metallic states contribute radiative transport can be modulated at nanoscale separation. And dynamic amplification factor varies from 12.8 26.7 when stretchable polydimethylsiloxane subjected tension or compression. This work sheds light on studies about controllable small-scale mechanical deformations.