Abstract
We report on the first model of a thermal transistor to control heat flow. Like its electronic counterpart, our thermal transistor is a three-terminal device with the important feature that the current through the two terminals can be controlled by small changes in the temperature or in the current through the third terminal. This control feature allows us to switch the device between “off” (insulating) and “on” (conducting) states or to amplify a small current. The thermal transistor model is possible because of the negative differential thermal resistance.
Highlights
Lei Wang Department of Physics, National University of Singapore, Singapore 117546, Republic of Singapore and Center for Computational Science and Engineering, National University of Singapore, Singapore 117542, Republic of Singapore
In this Letter we propose a model for a thermal transistor which can control the heat flow in analogy to the usual electric transistor for the control of the electric current
Our model of thermal transistor consists of three segments, D, S, and Gsee Fig. 1͑afor its configuration
Summary
Our model of thermal transistor consists of three segments, D, S, and Gsee Fig. 1͑afor its configuration. In our numerical simulations the lattices are coupled, at their first particles, with heat baths at different temperatures TD, TS, and TG, respectively. ͑b Heat current vs the control temperature TG.
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