Speaker
Alexander Syböck
Description
Contaminants and other gases are known to greatly affect surface tension values. We have developed a way to measure the surface tension of ultra-clean liquids in contact with their pure gaseous phases. The liquid is condensed onto a small cryostat in a vacuum chamber. A pendant drop is formed and photographed allowing the surface tension of the ultra-pure liquid to be directly determined. Accurate control of the temperature, pressure and optics of the system is of importance. How these parameters are precisely controlled in the instrument design will be discussed along with initial measurements of ultra-pure water.
Author
Alexander Syböck
Co-authors
Dr
Jan Balajka
(Institute for applied Physics TU Wien)
Prof.
Jiri Pavelec
(Institute for applied Physics TU Wien)
Prof.
Michael Schmid
(Institute for applied Physics TU Wien)
Dr
Paul Ryan
(Institute for Applied Physics TU Wien)
Prof.
Ulrike Diebold
(Institute for applied Physics TU Wien)