ISSN: 0256-1115 (print version) ISSN: 1975-7220 (electronic version)
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English
Conflict of Interest
In relation to this article, we declare that there is no conflict of interest.
Publication history
Received February 19, 2025
Revised March 25, 2025
Accepted April 3, 2025
Available online September 25, 2025
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Directional Liquid Mobility and Interlocking of Anisotropic Micropillar Structures Modulated by Multiple Compressive Bending

kyyoo@seoultech.ac.kr, hsyoon@seoultech.ac.kr
Korean Journal of Chemical Engineering, September 2025, 42(11), 2693-2700(8)
https://doi.org/10.1007/s11814-025-00458-5

Abstract

The study investigates the deformation of elastomeric surfaces under multiple compressive bending to modify the geometry

of micro-hyperbolic pillar arrays, enabling enhanced liquid repellency and tunable interlocking properties. During bending,

compressive stress transforms circular microholes into elliptical shapes. By repeating the process of compressive bending and

replication, we can achieve highly anisotropic pillar arrays for anisotropic wetting behavior with directional liquid mobility.

The bending process modulates pillar-to-pillar spacing along diff erent axes, further facilitating anisotropic liquid movement.

Furthermore, interlocking microarray patterns exhibit direction-dependent shear stress, resulting in a distinct mechanical

response. These fi ndings highlight a scalable, cost-eff ective strategy for designing smart surfaces with tailored wetting and

mechanical properties, with potential applications in droplet manipulation and specialized adhesives.

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