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Jeong, Hoon Eui
Multiscale Biomimetics & Manufacturing Lab
Research Interests
  • Biomimetics

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Fabrication and analysis of enforced dry adhesives with core-shell micropillars

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Title
Fabrication and analysis of enforced dry adhesives with core-shell micropillars
Author
Bae, Won-GyuKwak, Moon KyuJeong, Hoon EuiPang, ChanghyunJeong, HakgeunSuh, Kahp-Yang
Keywords
Adhesion forces; Beam deflection; Core-shell; Dry adhesive; Micro-pillars; Polyurethane acrylates; SIMPLE method; Theoretical models; Thin layers
Issue Date
201302
Publisher
ROYAL SOC CHEMISTRY
Citation
SOFT MATTER, v.9, no.5, pp.1422 - 1427
Abstract
We present a simple method for fabricating robust dry adhesives by coating a soft polydimethyl siloxane (PDMS) thin layer on rigid backbone micropillars of polyurethane acrylate (PUA). These core-shell type micropillars demonstrated enhanced durability both in normal and shear adhesion over more than 100 cycles of attachment and detachment. Relatively strong normal (∼11.4 N cm -2) and shear (∼15.3 N cm-2) adhesion forces were observed, which were similar to or even larger than those of homogeneous PDMS micropillars. A simple theoretical model based on beam deflection theory was used to explain the experimental results.
URI
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DOI
http://dx.doi.org/10.1039/c2sm27323c
ISSN
1744-683X
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