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Measurement of specific surface free energy of ruby and quartz single crystals using contact angle of liquids
Author(s) -
Suzuki Takaomi,
Sugihara Naoki,
Iguchi Eiichi,
Teshima Katsuya,
Oishi Shuji,
Kawasaki Masayuki
Publication year - 2007
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200711008
Subject(s) - quartz , crystal (programming language) , contact angle , surface energy , formamide , crystallography , surface (topology) , materials science , crystal growth , analytical chemistry (journal) , chemistry , geometry , composite material , chromatography , organic chemistry , mathematics , computer science , programming language
The specific surface free energy of ruby and quartz single crystal was experimentally obtained using contact angle of water and formamide droplets on the crystal surfaces, and compared with the morphology of each crystal. The ruby crystals satisfied Wulff's relationship even though their shape were not equilibrium form. The specific surface free energies of the growing faces of synthetic quartz crystal, ‐X, +X, Z, and S faces were obtained as 51.9, 55.6, 57.4, and 58.9 mN/m, respectively. The growth rates of these faces were 0.09, 0.23, 0.28, and 0.33 mm/day, respectively. The growth rate of each face of the quartz crystal can be regarded as a function of the experimentally obtained specific surface free energy. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)