Abstract
In order to analyze the influence of fluid on the growth morphology of crystals, a so-called interfacial analysis has been developed within the framework of inhomogeneous cell models. In this analysis, the effects of fluid composition (including solute, solvent, impurities, etc.) and concentration on the growth and morphology of crystals are explicitly taken into account. One of the key steps in this analysis is to identify the effective growth units in different crystallographic orientations and to calculate their concentrations. This involves a conformation analysis and calculation of the entropy barrier using a statistic thermodynamic approach. This technique has been applied with great success to predict morphologies of a variety of crystals growing from solutions, which cannot be predicted correctly using the conventional PBC analysis. An example of paraffin crystals grown from solutions is given. Based on similar principles, implications for the design of tailor-made additives are proposed.
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