Measurement of specific surface free energy of ruby and quartz single crystals using contact angle of liquids

✍ Scribed by Takaomi Suzuki; Naoki Sugihara; Eiichi Iguchi; Katsuya Teshima; Shuji Oishi; Masayuki Kawasaki

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 269 KB
• Volume: 42
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.200711008

✦ Synopsis

Abstract

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)