Testing the minimum thermal conductivity model for amorphous polymers using high pressure

Wen Pin Hsieh, Mark D. Losego, Paul V. Braun, Sergei Shenogin, Pawel Keblinski, David G. Cahill

Research output: Contribution to journalArticlepeer-review

Abstract

Pressure dependence of thermal conductivity provides a critical test of the validity of the model of the minimum thermal conductivity for describing heat transport by molecular vibrations of an amorphous polymer. We measure the pressure dependence of the thermal conductivity Λ(P) of poly(methyl methacrylate) using a combination of time-domain thermoreflectance and SiC anvil-cell techniques. We also determine Λ(P) from a computational model of amorphous polystyrene. In both cases, Λ(P) is accurately predicted by the minimum thermal conductivity model via the pressure dependence of the elastic constants and density.

Original languageEnglish (US)
Article number174205
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number17
DOIs
StatePublished - May 19 2011

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Testing the minimum thermal conductivity model for amorphous polymers using high pressure'. Together they form a unique fingerprint.

Cite this