A continuum model for thin-film condensation
作者： A V Osipov
DOI: 10.1088/0022-3727/28/8/016
关键词: Nucleation 、 Capillary action 、 Supersaturation 、 Metastability 、 Amplitude 、 Spinodal decomposition 、 Critical value 、 Condensed matter physics 、 Particle number 、 Thermodynamics 、 Chemistry
摘要: The proposed continuum model describes thin film nucleation and growth from a unique point of view for the whole region supersaturations (both metastable small unstable high supersaturations). early stage thin-film formation is presented as relaxation process order parameter field. For metastability parameter, nucleus-like solution running wave found. It dissolution new phase nuclei. shown to conform classical capillary theory in this case. A correlation between parameters these two theories deduced. revealed that, if close its critical value, then profile field strongly distorted fluctuations nucleus touch not only boundary but whole. In case described statistically, with amplitude mode chosen description variable. When supersaturation so large that adatom system (the number particles equal unity exceeds value), condensation framework spinodal decomposition theory. sufficiently energy calculated regard existence transition separates initial phases.
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