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Journal of mechanical science and technology v.25 no.1, 2011년, pp.27 - 32   SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Thermal rectification of asymmetrically-defective materials

Hayashi, Hiroyuki    (Department of Aeronautics and Astronautics, Faculty of Engineering, Kyushu University   ); Ito, Yohei    (Department of Aeronautics and Astronautics, Faculty of Engineering, Kyushu University   ); Takahashi, Koji    (Department of Aeronautics and Astronautics, Faculty of Engineering, Kyushu University  );
  • 초록

    We conducted numerical simulations of heat conduction in one-dimensional (1D) nonlinear lattices to reveal the mechanism of thermal rectification of asymmetrically-defective materials. A decreased spring constant simulates the defective lattice and the obtained temperature profile suggests a thermal resistance existing at the interface of two linked segments with different spring constants. Our numerical results suggest that the thermal rectification of two-segment system is dependent on the spring constant and temperature gradient. Introducing the estimated phonon band, most of the rectification mechanisms are clearly explained and performance limit as a thermal rectifier is found for the defective/pristine materials.


  • 주제어

    Anharmonic lattice model .   Low dimensional material .   Molecular dynamic simulation .   Carbon nanotube .   Thermal rectification.  

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