Journal
APPLIED PHYSICS LETTERS
Volume 79, Issue 25, Pages 4121-4123Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1419239
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The effective thermal conductivity of four polymeric thin films with distinct molecular morphologies has been measured as a function of film thickness down to 70 Angstrom using a 3 omega technique. Comparing to SiO2, the intrinsic thermal conductivity of polymers is about 5-10 times smaller while the interfacial thermal resistance is about 2-10 times larger. The interfacial thermal resistances are explained in terms of the mismatches of acoustic and mechanical properties between polymers and crystalline materials. Both elastic and inelastic scatterings at the interface are examined. (C) 2001 American Institute of Physics.
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