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

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Stretched polymer nanohairs by nanodrawing

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Title
Stretched polymer nanohairs by nanodrawing
Other Titles
Stretched polymer nanohairs by nanodrawing
Author
Jeong, Hoon EulLee, Sung HoonKim, PilnamSuh, Kahp Y.
Keywords
GECKO FOOT-HAIR; SOFT LITHOGRAPHY; PATTERN REPLICATION; SURFACES; FORCE; FILMS; DEVICES; MOLD
Issue Date
2006-07
Publisher
AMER CHEMICAL SOC
Citation
NANO LETTERS, v.6, no.7, pp.1508 - 1513
Abstract
A simple, yet innovative, method is presented for fabricating high-aspect-ratio polymer nanohairs (aspect ratio > 20) on a solid substrate by sequential application of molding and drawing of a thin polymer film. The polymer film was prepared by spin coating on a rigid or flexible substrate, and the temperature was raised above the polymer's glass transition while in conformal contact with a poly(urethane acrylate) mold having nanocavities. Consequently, capillary forces induced deformation of the polymer melt into the void spaces of the mold and the filled nanostructure was further elongated upon removal of the mold due to tailored adhesive force at the mold/polymer interface. The optimum value of the work of adhesion at the mold/polymer interface ranged from 0.9 to 1.1 times that at the substrate/polymer interface
URI
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DOI
10.1021/nl061045m
ISSN
1530-6984
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