Thermal rectification of asymmetrically-defective materials

Hiroyuki Hayashi, Yohei Ito, Koji Takahashi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)27-32
Number of pages6
JournalJournal of Mechanical Science and Technology
Volume25
Issue number1
DOIs
Publication statusPublished - Jan 1 2011

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Heat resistance
Heat conduction
Thermal gradients
Computer simulation
Hot Temperature
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Thermal rectification of asymmetrically-defective materials. / Hayashi, Hiroyuki; Ito, Yohei; Takahashi, Koji.

In: Journal of Mechanical Science and Technology, Vol. 25, No. 1, 01.01.2011, p. 27-32.

Research output: Contribution to journalArticle

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