Fabrication of bio-inspired elastomer nanofiber arrays with spatulate tips using notching effect

Seok Kim, Metin Sitti, Ji Hyun Jang, Edwin L. Thomas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, a fabrication method for nanoscale elastomer fiber arrays with spatulate tip endings as gecko foot-hairs inspired nanoscale fibrillar dry adhesives is proposed. A master mold is fabricated with silicon-on-insulator (SOI) wafer using the interference lithography and the notching effect during deep reactive ion etch process. Liquid polymer is poured over the mold in vacuum chamber and cured. Final nanoscale elastomer fiber arrays are released after etching the SOI master mold. Fabricated polyurethane nanofiber arrays with 410 nm fiber diameter and 2 μm height demonstrated macroscale adhesion pressures up to 14.1 N/cm2 on a 1 mm diameter silicon flat disk for a preload pressure of 6.7 N/cm2.

Original languageEnglish (US)
Title of host publication2008 8th IEEE Conference on Nanotechnology, IEEE-NANO
Pages780-782
Number of pages3
DOIs
StatePublished - Nov 10 2008
Externally publishedYes
Event2008 8th IEEE Conference on Nanotechnology, IEEE-NANO - Arlington, TX, United States
Duration: Aug 18 2008Aug 21 2008

Publication series

Name2008 8th IEEE Conference on Nanotechnology, IEEE-NANO

Other

Other2008 8th IEEE Conference on Nanotechnology, IEEE-NANO
Country/TerritoryUnited States
CityArlington, TX
Period8/18/088/21/08

Keywords

  • Biologically inspired adhesives
  • Fibrillar adhesion
  • Notching effect

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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