| Autor: |
Klier, Jürgen, Wyatt, Adrian |
| Zdroj: |
Journal of Low Temperature Physics; Feb1998, Vol. 110 Issue 3/4, p919-943, 25p |
| Abstrakt: |
Two independent methods to measure the contact angle, Θ, of isotopically pure4 He on Cs are described, and applied to the same Cs sample. The two methods agree well. The contact angle as a function of temperature is measured and clearly shows a first order surface phase transition with a wetting temperature Tw = 2 K. From Θ( T) the difference in surface free energy of the Cs-vapour interface and the Cs-liquid interface is calculated. Its large temperature dependence suggests the existence of ripplons at the liquid He-Cs interface. This surprising possibility is discussed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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