Abstract
Experimentally observed values for the Kapitza resistance across a solid-liquid He II boundary show that for specimens of gold, copper, and sapphire an enhanced heat flow is achieved between the two media if a surface film of barium stearate is deposited on the solid. The magnitude of the improved heat flow is less than that predicted from a simple model for phonon transmission across a solid-film-liquid arrangement, but is greater than that expected from the Khalatnikov theory.
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One of us (M.F.W.) is grateful to the Fredk. D. Edwards Scholarship Trust for a grant, and to S.R.C. for a studentship which enabled this work to be carried out.
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Whelan, M.F., Osborne, D.V. The Kapitza resistance and thin surface films. J Low Temp Phys 8, 449–461 (1972). https://doi.org/10.1007/BF00653873
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DOI: https://doi.org/10.1007/BF00653873