收稿日期: 2009-11-30
修回日期: 2010-01-06
网络出版日期: 2010-07-15
基金资助
国家自然科学基金(10831006,10671204)、中国科学院知识创新工程重要方向项目(kjcx-yw-s7)和唐山师范学院发展基金项目(09D01)资助
Contact angle of nucleation on the substrate of three mutually perpendicular planes
Received date: 2009-11-30
Revised date: 2010-01-06
Online published: 2010-07-15
郝晓辉 , 高随祥 . 基于三垂面上形核的润湿角[J]. 中国科学院大学学报, 2010 , 27(4) : 433 -439 . DOI: 10.7523/j.issn.2095-6134.2010.4.001
This paper focuses on the discussion of the heterogeneous nucleation on the substrate of three mutually perpendicular planes. According to the condition of heterogeneous nucleation, we study the critical radius of nucleation and the critical nucleation energy to form a critical nucleus, and obtain a mathematical expression of critical nucleation energy and contact angle. The result shows that the critical nucleation energy is only relevant to the contact angle and that the contact angle plays an important role in heterogeneous nucleation. The discussion on contact angles of nucleation indicates that the critical nucleation energy of heterogeneous nucleation is smaller than that of spontaneous nucleation.
Key words： heterogeneous; contact angle; nucleation radius; nucleation energy
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