Surface-directed Spinodal Decomposition on Morphologically Patterned Substrates

Autor:	Das, Prasenjit, Jaiswal, Prabhat K., Puri, Sanjay
Rok vydání:	2020
Předmět:	Condensed Matter - Statistical Mechanics Condensed Matter - Soft Condensed Matter
Druh dokumentu:	Working Paper
Popis:	This paper is the second in a two-part exposition on {\it surface-directed spinodal decomposition} (SDSD), i.e., the interplay of kinetics of wetting and phase separation at a surface which is wetted by one of the components of a binary mixture. In our first paper [P. Das, P.K. Jaiswal and S. Puri, Phys. Rev. E {\bf 102}, 012803 (2020)], we studied SDSD on chemically heterogeneous and physically flat substrates. In this paper, we study SDSD on a chemically homogeneous but morphologically patterned substrate. Such substrates arise in a vast variety of technological applications. Our goal is to provide a theoretical understanding of SDSD in this context. We present detailed numerical results for domain growth both inside and above the grooves in the substrate. The morphological evolution can be understood in terms of the interference of SDSD waves originating from the different surfaces comprising the substrate. Comment: 17Pages, 9 Figures, Accepted to Physical Review E
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2008.10250 Zobrazit plný text záznamu View this record from Arxiv