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Proceedings Paper

Surface tension determination using liquid sample micromirror property
Author(s): Jan Hošek
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Paper Abstract

This paper presents an application of adaptive optics principle onto small sample of liquid surface tension measurement. The principle of experimental method devised by Ferguson (1924) is based on measurement of pressure difference across a liquid sample placed into small diameter capillary on condition of one flat meniscus of the liquid sample. Planarity or curvature radius of the capillary tip meniscus has to be measured and controlled, in order to fulfill this condition during measurement. Two different optical set-ups using liquid meniscus micromirror property are presented and its suitability for meniscus profile determination is compared. Meniscus radius optical measurement, data processing and control algorithm of the adaptive micromirror profile set are presented too. The presented adaptive optics system can be used for focal length control of microsystems based on liquid micromirrors or microlenses with long focal distances especially.

Paper Details

Date Published: 16 May 2007
PDF: 8 pages
Proc. SPIE 6584, Adaptive Optics for Laser Systems and Other Applications, 65840A (16 May 2007); doi: 10.1117/12.722704
Show Author Affiliations
Jan Hošek, Czech Technical Univ. in Prague (Czech Republic)


Published in SPIE Proceedings Vol. 6584:
Adaptive Optics for Laser Systems and Other Applications
Gilles Cheriaux; Chris J. Hooker; Michal Stupka, Editor(s)

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