A quasi two-dimensional bubble method for surface tension and contact angle measurements at the crystal-melt interface. II. Physical realization

• Published in: Journal of crystal growth Vol. 182; no. 1-2; pp. 205 - 211
• Main Authors: Komunjer, L., Clausse, D., Mutaftschiev, B.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.12.1997; Elsevier
• Subjects: Condensed matter: structure, mechanical and thermal properties; Contact angle; Cross-disciplinary physics: materials science; rheology; Crystal-melt interface; Exact sciences and technology; Growth from melts; zone melting and refining; Materials science; Methods of crystal growth; physics of crystal growth; Physics; Solid-fluid interfaces; Surface tension of liquids; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Theory and models of crystal growth; physics of crystal growth, crystal morphology and orientation; Wetting; Surface tension of liquids; Contact angle; Crystal-melt interface; Bubbles; Liquid solid interface; Wetting; Growth interface; Surface tension; Experimental study; Coumarin; Organic compounds; Crystal growth from melts
• ISSN: 0022-0248; 1873-5002
• DOI: 10.1016/S0022-0248(97)00376-X

An experimental setup for simultaneous measurement of the surface tension of a liquid and of the contact angle at the solid-liquid interface between a crystal and its own melt, is described. The method is based on shape determination of a gas bubble captured at the crystal-melt interface inside a thin cell composed of two plane-parallel glass plates, in contact with a temperature gradient heating block. The feasibility of the method is demonstrated in the case of coumarin.