DYNAMIC MEASUREMENT OF THIN LIQUID-FILM PARAMETERS USING HIGH-SPEED ELLIPSOMETRY

Citation
Pvp. Yupapin et al., DYNAMIC MEASUREMENT OF THIN LIQUID-FILM PARAMETERS USING HIGH-SPEED ELLIPSOMETRY, Sensors and actuators. A, Physical, 65(1), 1998, pp. 19-22
Citations number
11
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
ISSN journal
09244247
Volume
65
Issue
1
Year of publication
1998
Pages
19 - 22
Database
ISI
SICI code
0924-4247(1998)65:1<19:DMOTLP>2.0.ZU;2-A
Abstract
The feasibility of the measurement of dynamic, thin liquid film proper ties using an ellipsometer-based fibre-optic modulation technique is p resented. The essence of this technique is that a dynamic measurement of film parameters such as refractive index and Fresnel reflection coe fficients may be simultaneously and automatically made, from which the instantaneous changes of liquid film thickness may be characterized. Such a scheme is discussed where a measurement rate of 25 Hz has been used to illustrate the value of the system in the monitoring of spread ing liquid films. (C) 1998 Elsevier Science S.A.