At 11:35 AM 7/21/00 +0100, you wrote:
>Hi all,
>
>Is there any ways to convert the DCA result to static contact angle?
>
>Thank you very much in advance.
>
>Sincerely,
>B. Salam

You can easily calculate the contact angle from the measured force if you
know the surface energy of the probe liquid and if the geometry is very
simple (preferably a thin flat plate). The following paper gives some more
details:

D.C.Whalley & P.P.Conway "The globule block wetting balance test",
Transactions of the ASME: Journal of Electronic Packaging, Vol.118:134-141,
No. 3, September 1996


David Whalley
Senior Lecturer
Manufacturing Engineering Department
Loughborough University
Loughborough
Leics LE11 3TU
UK

Tel. +44(0)1509 222930
Fax. +44(0)1509 267725

[log in to unmask]
http://www.lboro.ac.uk/departments/en/research/mp/david_whalley/index.html

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