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Applied Physics Letters / Volume 97 / Issue 1 / STRUCTURAL, MECHANICAL, THERMODYNAMIC, AND OPTICAL PROPERTIES OF CONDENSED MATTER

Appl. Phys. Lett. 97, 011908 (2010); doi:10.1063/1.3458802 (3 pages)

Interfacial thermal conductance in spun-cast polymer films and polymer brushes

Mark D. Losego, Lionel Moh, Kevin A. Arpin, David G. Cahill, and Paul V. Braun

Department of Materials Science and Engineering, Frederick Seitz Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, USA

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(Received 19 May 2010; accepted 8 June 2010; published online 9 July 2010)

Interfaces between inorganic materials and anharmonic polymers have potentially intriguing thermal transport behavior. The low thermal conductivity of amorphous polymers limits significant interfacial effects to polymer film thicknesses of only a few nanometers. We use time-domain thermoreflectance to directly measure interfacial effects in the thermal conductance of spun-cast poly(methyl methacrylate) (PMMA) thin films and PMMA brushes “grafted-from” the substrate. PMMA brushes are expected to have polymer chains partially aligned perpendicular to the substrate, yet only a modest increase (13%) in thermal conductivity is observed over spun-cast layers.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

casting, interface states, nanocomposites, nanofabrication, polymer films, thermal conductivity, thermoreflectance

PACS

  • 81.16.-c

    Methods of micro- and nanofabrication and processing

  • 61.41.+e

    Polymers, elastomers, and plastics

  • 81.20.-n

    Methods of materials synthesis and materials processing

  • 78.20.N-

    Thermo-optic effects

  • 66.70.-f

    Nonelectronic thermal conduction and heat-pulse propagation in solids; thermal waves

ARTICLE DATA

Permalink
http://link.aip.org/link/doi/10.1063/1.3458802

PUBLICATION DATA

ISSN:

0003-6951 (print)  
1077-3118 (online)

Publisher:

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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