Programmable Fabrication of Submicrometer Bent Pillar Structures Enabled by a Photoreconfigurable Azopolymer

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Anisotropic small structures found throughout living nature have unique functionalities as seen by Gecko lizards. Here, we present a simple yet programmable method for fabricating anisotropic, submicrometer-sized bent pillar structures using photoreconfiguration of an azopolymer. A slant irradiation of a p-polarized light on the pillar structure of an azopolymer simply results in a bent pillar structure. By combining the field-gradient effect and directionality of photofluidization, control of the bending shape and the curvature is achieved. With the bent pillar patterned surface, anisotropic wetting and directional adhesion are demonstrated. Moreover, the bent pillar structures can be transferred to other polymers, highlighting the practical importance of this method. We believe that this pragmatic method to fabricate bent pillars can be used in a reliable manner for many applications requiring the systematic variation of a bent pillar structure.
Publisher
AMER CHEMICAL SOC
Issue Date
2020-01
Language
English
Article Type
Article
Citation

ACS APPLIED MATERIALS & INTERFACES, v.12, no.4, pp.5058 - 5064

ISSN
1944-8244
DOI
10.1021/acsami.9b19420
URI
http://hdl.handle.net/10203/272437
Appears in Collection
ME-Journal Papers(저널논문)CBE-Journal Papers(저널논문)
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