Volume 42, Number 4, May II 1998
|Page(s)||443 - 448|
|Section||Condensed matter: structure, thermal and mechanical properties|
|Published online||01 September 2002|
Can a superfluid droplet spread?
Max-Planck Institute for Colloid and Interface Science, Rudower Chaussee 5,
12489 Berlin-Adlershof, Germany
Accepted: 23 March 1998
It is argued that a superfluid droplet which is placed onto a solid substrate will, in a wide range of experimental parameters, acquire a finite contact angle even if the substrate is completely wetted by the liquid. This effect is due to the flow out of the droplet into the saturated film covering the surface. It is closely related to the Kontorovich effect and may explain recently reported observations of non-spreading of superfluid on substrates which are known to be wetted by helium.
PACS: 68.15.+e – Liquid thin films / 68.45.Gd – Wetting / 83.10.Bd – Kinematics of deformation and flow
© EDP Sciences, 1998
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