CUED Publications database

Two-dimensional arrays self-assembled: Via interference of concentration modulation waves in drying solutions

Li, S and Chun, YT and Li, J and Shrestha, P and Ahn, H and Ahn, D and Sohn, JI and Hong, WK and Kim, B and Deng, Y and Chu, D (2019) Two-dimensional arrays self-assembled: Via interference of concentration modulation waves in drying solutions. Materials Horizons, 6. pp. 507-514. ISSN 2051-6347

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Abstract

© The Royal Society of Chemistry. The self-assembly of patterned nanostructures in solution-processed thin films with multiphase block-copolymers is successful. Generation of small and well-defined regular structures directly from single-phase polymer films is challenging. Here, a 2-dimensional (2D) patterned array of single-phase polymers was self-assembled by a solution process. One-dimensional spinodal precipitation with a characteristic wavelength was achieved along a pinned contact line of the drying solution to form a one-dimensional periodic structure (1DPS) via geometry and concentration confinement. The latter was uncovered from the liquid by sequential depinning and repinning of the contact line. A new 1DPS with an inherited phase re-emerged and triggered depinning and repinning. The process was self-repeated and a 2D array was formed with a tuneable lattice type and parameters, which was governed by the interference of two concentration-modulated waves.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jan 2019 05:21
Last Modified: 02 Mar 2021 08:09
DOI: 10.1039/c8mh01264d