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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

MOLECULAR DYNAMICS STUDY OF THERMAL RECTIFICATION BASED ON DOMINO EFFECT

Get access (open in a dialog) DOI: 10.1615/IHTC16.nmt.023960
pages 7073-7083

Resumo

Thermal rectification is a physical phenomenon where thermal transport along one direction is much stronger than that in the opposite direction, which has lots of applications, for example, thermal management in electronics and buildings, phonon computers, and so on. However, the efficiencies of currently designed thermal rectifiers are extremely low, largely affecting the applications of thermal rectifiers, which are generally based on conventional mechanisms of thermal rectification, e.g., asymmetric geometry, nonuniform mass distribution, etc. Researchers from Shanghai University report that the circular and collapsed shapes of carbon nanotubes can be interchanged reversibly by simply changing the temperature, which is called the domino effect. Based on the unusual physical phenomenon we designed carbon nanotube-based thermal rectifiers based on the thermal rectification mechanisms of domino effect. We performed a series of molecular dynamics simulations to evaluate the efficiency of the designed thermal rectifiers and do the phonon mode analysis to explore the mechanisms of the thermal rectification.