Abhijeet Paul

Tunability of lattice thermal conductance in Siand Ge nanowires using porosity


  • Tunability of lattice thermal conductance (kl) using porous nanowires.


  • Obtain phonon dispersion in hollow nanowires using Modified VFF model...
  • Calculate thermal conductance using Landauer's model.



  • Work published in APL, 2011. 98, 083106 (2011); doi:10.1063/1.3556648


  • Reduction in lattice thermal conductance as high as 30% obtained by 20% atom removal.
  • Weak material dependence, Si and Ge nanowires show similar reduction.
  • Mode reduction and phonon localization associated with reduction in lattice thermal conductance. .

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