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A miniaturized transient hot-wire device for measuring thermal conductivity of non-conductive fluids

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Abstract

This paper presents the design, fabrication and characterization of a novel transient hot-wire device for measurement of thermal conductivity of non-conductive fluids. The key features of the cell are small sample amount, simple fabrication, accurate measurement and transparency, which allows the study of both thermal and optical properties of the fluids. A 20 μm-diameter platinum hot wire is symmetrically suspended along the central axis of the capsulated cell to avoid the effect from the walls. A four-point resistance measurement method was used to measure the transient resistance with high accuracy. The accuracy of the thermal conductivity measurement was validated with reference values and very good agreement was achieved.

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Acknowledgments

The authors are grateful to Mr. Phoung Phan and Mr. Toan Dinh for their help in mechanical fabrication of the cell.

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Authors and Affiliations

  1. Queensland Micro- and Nanotechnology Centre, Brisbane, Australia

    Dzung Viet Dao

  2. School of Engineering, Griffith University, Gold Coast Campus, Gold Coast, QLD, 4222, Australia

    Ashkan Vatani, Peter Lloyd Woodfield & Dzung Viet Dao

Authors
  1. Ashkan Vatani
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  2. Peter Lloyd Woodfield
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  3. Dzung Viet Dao
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Correspondence to Ashkan Vatani.

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Vatani, A., Woodfield, P.L. & Dao, D.V. A miniaturized transient hot-wire device for measuring thermal conductivity of non-conductive fluids. Microsyst Technol 22, 2463–2466 (2016). https://doi.org/10.1007/s00542-015-2574-8

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  • DOI: https://doi.org/10.1007/s00542-015-2574-8

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