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Permeability- and Surface-Energy-Tunable Polyurethane Acrylate Molds for Capillary Force Lithography

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Title
Permeability- and Surface-Energy-Tunable Polyurethane Acrylate Molds for Capillary Force Lithography
Author(s)
Dongchul Suh; Hyowon Tak; Se-jin Choi; Tae-il Kim
Subject
capillary force lithography, ; degree of cross-linking, ; micro/nanostructure, ; permeability, ; surface energy
Publication Date
2015-11
Journal
ACS APPLIED MATERIALS & INTERFACES, v.7, no.43, pp.23824 - 23830
Publisher
AMER CHEMICAL SOC
Abstract
A permeability- and surface-energy-controllable polyurethane acrylate (PUA) mold, a capillary-force material (CFM) mold, is introduced for capillary-force lithography (CFL). In CFL, the surface energy and gas permeability of the mold are crucial. However, the modulation of these two main factors at a time is difficult. Here, we introduce new CFM molds in which the surface energy and permeability can be modified by controlling the degree of cross-linking of the CFM. As the degree of cross-linking of the CFM mold increases, the surface energy and air permeability decrease. The high average functionality of the mold material makes it possible to produce patterns relatively finely and rapidly due to the high rate of capillary rise and stiffness, and the low functionality allows for patterns to form on a curved surface with conformal contact. CFMs with different functionality and controllable-interfacial properties will extend the capabilities of capillary force lithography to overcome the geometric limitations of patterning on a scale below 100 nm and micro- and nanopatterning on the curved region. © 2015 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/2262
DOI
10.1021/acsami.5b06975
ISSN
1944-8244
Appears in Collections:
Center for Neuroscience Imaging Research (뇌과학 이미징 연구단) > 1. Journal Papers (저널논문)
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