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Jeong, Hoon Eui
Multiscale Biomimetics & Manufacturing Lab
Research Interests
  • Biomimetics
  • Multiscale manufacturing
  • Micro/nanofabrication

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Generation and Self-Replication of Monolithic, Dual-Scale Polymer Structures by Two-Step Capillary-Force Lithography

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Title
Generation and Self-Replication of Monolithic, Dual-Scale Polymer Structures by Two-Step Capillary-Force Lithography
Other Titles
Generation and Self-Replication of Monolithic, Dual-Scale Polymer Structures by Two-Step Capillary-Force Lithography
Author
Jeong, Hoon EuiKwak, RhokyunKim, Jae KwanSuh, Kahp Y.
Keywords
SUPER-HYDROPHOBIC SURFACE; SUPERHYDROPHOBIC SURFACE; IMPRINT LITHOGRAPHY; ACRYLATE COATINGS; OXYGEN INHIBITION; NANOSTRUCTURES; MICRO; FABRICATION; DEPOSITION; CREATION
Issue Date
2008-11
Publisher
WILEY-V C H VERLAG GMBH
Citation
SMALL, v.4, no.11, pp.1913 - 1918
Abstract
A two-step UV-assisted capillary molding technique for fabricating monolithic micro-nanoscale polymer structures over a large area was reported. A polydimethylsiloxane (PDMS) mold with micropatterns was placed onto spin-coated, UV-curable PUA resin on a flexible PET substrate. The polyurethane acrylate (PUA) resin was partially cured by UV exposure for 5-21. The PUA mold with nanopatterns was placed on the preformed microstructures under a slight pressure followed by additional UV exposure, after fabricating a partially cured microstructure. ATR-FTIR spectra were recorded in the mid-infrared range, from 400-600 cm-1 range. The advancing and decreasing contact angles of water droplet were measured by increasing and decreasing the volume of the drop with a contact angle analyzer. It was found that the micro-nanosclae combined hierarchical structure increases the CA of a water droplet, while reducing the CAH.
URI
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DOI
10.1002/smll.200800151
ISSN
1613-6810
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