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journal article·2015-03-01Open access

Capillary effects in guided crystallization of organic thin films

Alta Fang, Anna K. Hailey, Abigail Grosskopf, John E. Anthony, Yueh-Lin Loo, Mikko Haataja

APL Materials· Volume 3· Issue 3
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Source abstract

Abstract

Recently, it has been demonstrated that solvent-vapor-induced crystallization of triethylsilylethynyl anthradithiophene (TES ADT) thin films can be directed on millimeter length scales along arbitrary paths by controlling local crystal growth rates via pre-patterning the substrate. Here, we study the influence of capillary effects on crystallization along such channels. We first derive an analytical expression for the steady-state growth front velocity as a function of channel width and validate it with numerical simulations. Then, using data from TES ADT guided crystallization experiments, we extract a characteristic channel width, which provides the smallest feature size that can be obtained by this technique.
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Research context

OpenAlex topics: Crystallization and Solubility Studies · Solidification and crystal growth phenomena · Block Copolymer Self-Assembly

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Affiliations

Princeton University 1 Department of Mechanical and Aerospace Engineering, , Princeton, New Jersey 08544, USA

Princeton University 2 Department of Chemical and Biological Engineering, , Princeton, New Jersey 08544, USA

University of Kentucky 3 Department of Chemistry, , Lexington, Kentucky 40506, USA

Princeton University 4 Department of Mechanical and Aerospace Engineering, Princeton Institute for the Science and Technology of Materials (PRISM) and Program in Applied and Computational Mathematics (PACM), , Princeton, New Jersey 08544, USA

Funding

National Science Foundation

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