Modulation of thermal conductivity in kinked silicon nanowires: phonon interchanging and pinching effects.

@article{Jiang2013ModulationOT,
  title={Modulation of thermal conductivity in kinked silicon nanowires: phonon interchanging and pinching effects.},
  author={Jin-Wu Jiang and Nuo Yang and Bing-Shen Wang and Timon Rabczuk},
  journal={Nano letters},
  year={2013},
  volume={13 4},
  pages={1670-4}
}
We perform molecular dynamics simulations to investigate the reduction of the thermal conductivity by kinks in silicon nanowires. The reduction percentage can be as high as 70% at room temperature. The temperature dependence of the reduction is also calculated. By calculating phonon polarization vectors, two mechanisms are found to be responsible for the reduced thermal conductivity: (1) the interchanging effect between the longitudinal and transverse phonon modes and (2) the pinching effect… CONTINUE READING

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