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arXiv · 2006.12232

Surface-Directed Spinodal Decomposition on Chemically Patterned Substrates

Prasenjit Das·Prabhat K. Jaiswal·Sanjay Puri
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Abstract

{\it Surface-directed spinodal decomposition} (SDSD) is the kinetic interplay of phase separation and wetting at a surface. This process is of great scientific and technological importance. In this paper, we report results from a numerical study of SDSD on a chemically patterned substrate. We consider simple surface patterns for our simulations, but most of the results apply for arbitrary patterns. In layers near the surface, we observe a dynamical crossover from a {\it surface-registry regime} to a {\it phase-separation regime}. We study this crossover using layer-wise correlation functions and structure factors, and domain length scales.

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Prasenjit Das, Prabhat K. Jaiswal, Sanjay Puri. 2020-06-22. Surface-Directed Spinodal Decomposition on Chemically Patterned Substrates. https://doi.org/10.1103/physreve.102.012803

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