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Article
Application of the Thermal Flash Technique for Low Thermal Diffusivity Micro/Nanofibers
Review of Scientific Instruments
  • Michael T. Demko, Case Western Reserve University
  • Zhenting Dai, University of Illinois at Urbana-Champaign
  • Han Yan, University of Akron Main Campus
  • William P. King, University of Illinois at Urbana-Champaign
  • Miko Cakmak, University of Akron Main Campus
  • Alexis R. Abramson, Case Western Reserve University
Document Type
Article
Publication Date
3-19-2009
Disciplines
Abstract

The thermal flash method was developed to characterize the thermal diffusivity of micro/nanofibers without concern for thermal contact resistance, which is commonly a barrier to accurate thermal measurement of these materials. Within a scanning electron microscope, a micromanipulator supplies instantaneous heating to the micro/nanofiber, and the resulting transient thermal response is detected at a microfabricated silicon sensor. These data are used to determine thermal diffusivity. Glass fibers of diameter 15 mu m had a measured diffusivity of 1.21x10(-7) m(2)/s; polyimide fibers of diameters 570 and 271 nm exhibited diffusivities of 5.97x10(-8) and 6.28x10(-8) m(2)/s, respectively, which compare favorably with bulk values.

Citation Information
Michael T. Demko, Zhenting Dai, Han Yan, William P. King, et al.. "Application of the Thermal Flash Technique for Low Thermal Diffusivity Micro/Nanofibers" Review of Scientific Instruments Vol. 80 Iss. 3 (2009)
Available at: http://works.bepress.com/mukerrem_cakmak/1/