Electro-optical device for surface and interface tension measurement

Year: 1983

Authors: Baglioni P., Francini F., Gabrielli G., Longobardi G.

Autors Affiliation: Istituto di Chimica Fisica, Università di Firenze, Italy;
Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: A description is given of a high resolution electro-optical device that supplies, in real time, values of surface tension of a drop of macromolecular substances as a function of time up to the equilibrium (pendant drop method). The optical system has a high magnification and high free working distance; the detection system consists of an optical scanner and a self scanned device. The application to automated drop inspection is discussed in relation to the other form of inspection systems.

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KeyWords: Interface tension; Macromolecular substances; Polymeric systems; Surface tension; Temperature dependence, electrooptical devices
DOI: 10.1117/12.934411