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  4. Thermal conductivity measurements on challenging samples by the 3 omega method
 
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2010
Journal Article
Title

Thermal conductivity measurements on challenging samples by the 3 omega method

Abstract
The 3 omega method is the best established method for measuring the thermal properties of thin films (>100 nm) and nanowires. Theoretically, the method could be applied to many more types of samples, leading to new knowledge, but to date little effort has been made to extend its applicability. An enabling set of technologies has been tested at the Fraunhofer-IPM. The technologies developed encompass a new design of microheater, the measurement of bulk samples with a prefabricated microheater on adhesive tapes and polymer sheets, the measurement of tiny bulk samples glued to the underside of polymer sheets, a fully automated experimental setup, and a new numerical tool adapted to the new type of heater. The new design of microheater and software were validated using float glass as a referen ce material. A microheater on adhesive tape was used to measure accurately the thermal properties of sintered thermoelectric materials. The thermal conductivity of a very small melt-spun nanocomposite sample glued to the underside of a Kapton sheet was measured. The potential of the new design of microheater to measure very thin (~nm) films is discussed.
Author(s)
Jacquot, A.
Fraunhofer-Institut für Physikalische Messtechnik IPM  
Vollmer, F.
Fraunhofer-Institut für Physikalische Messtechnik IPM  
Bayer, B.
Fraunhofer-Institut für Physikalische Messtechnik IPM  
Jägle, M.  
Fraunhofer-Institut für Physikalische Messtechnik IPM  
Ebling, D.G.
Fraunhofer-Institut für Physikalische Messtechnik IPM  
Böttner, H.
Fraunhofer-Institut für Physikalische Messtechnik IPM  
Journal
Journal of Electronic Materials  
DOI
10.1007/s11664-010-1265-6
Language
English
Fraunhofer-Institut für Physikalische Messtechnik IPM  
Keyword(s)
  • 3 Omega

  • thermal properties measurement

  • thermal conductivity

  • heat capacity

  • SPS material

  • bismuth telluride

  • bismuth antimony telluride

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