Topology-induced thermal rectification in carbon nanodevice
Department of Physics and Centre for Computational Science and Engineering, National University of Singapore Singapore 117542, Republic of Singapore
2 NUS Graduate School for Integrative Sciences and Engineering - Singapore 117456, Republic of Singapore
Accepted: 12 February 2010
The thermal rectification (TR) effect in a topological system, Möbius graphene strip, is studied by nonequilibrium molecular-dynamics simulation with Nóse-Hoover heat baths. Due to the nonlinear interaction in graphene and the topological asymmetry of the Möbius strip, the TR phenomenon emerges and the value of TR can be as large as 120%. This topology-induced TR is not very sensitive to the temperature and size of the system; while the position of heat bath is important, since it can induce additional asymmetry.
PACS: 65.80.Ck – Thermal properties of graphene / 62.23.Kn – Nanosheets / 66.70.-f – Nonelectronic thermal conduction and heat-pulse propagation in solids; thermal waves
© EPLA, 2010