Partially coherent phonon transport in two-dimensionally rough nanowires

Jyothi Sadhu, Myunghoon Seong, Sanjiv Sinha

Research output: Contribution to journalArticlepeer-review


Rough surface nanowires exhibit a severely reduced thermal conductivity compared to the bulk. Their thermal conductivities are much below the value predicted from the diffuse scattering model. Such low thermal conductivities are particularly promising for thermoelectric applications. We extend our previous work on understanding this phenomenon using a model of partially coherent phonon transport. Considering both azimuthal and longitudinal roughness, we show that it is the latter that dominates thermal conductivity reduction. Our work advanced fundamental phonon boundary scattering that is key in applications ranging from semiconductor devices to thermoelectric materials.

Original languageEnglish (US)
Pages (from-to)1-7
Number of pages7
JournalJournal of Computational Electronics
Issue number1
StatePublished - Mar 2012


  • Multiple scattering
  • Phonon transport
  • Rough nanowire
  • Thermal conductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Modeling and Simulation
  • Electrical and Electronic Engineering


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