Electrowetting on arrayed carbon nanofibers

M. S. Dhindsa, N. R. Smith, J. Heikenfeld, P. D. Rack, J. D. Fowlkes, M. J. Doktycz, A. V. Melechko, M. L. Simpson

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

Electrowetting on arrayed carbon nanofibers has been demonstrated. The testing structure consists of Si/carbon nanofibers/dielectric/fiuoropolymer/ liquid. Nanofibers were patterned on 5×5 μm pitch which resulted in superhydrophobic behavior for water (θ>150°). Via electrowetting, liquid contact angle was shown to be irreversibly reducible to θ-100°. Electrowetting using a competitive two-liquid (oil/water) system was shown to be reversible. The nanofibers terminate in a <25 nm radius tip. This small tip size results in effectively zero capacitance for water in the dewetted state. As electrowetting increased with applied voltage, the wetting state was confirmed by measuring the capacitance and stored energy density for the liquid/nanofiber system.

Original languageEnglish
Title of host publication2006 6th IEEE Conference on Nanotechnology, IEEE-NANO 2006
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages207-210
Number of pages4
ISBN (Print)1424400783, 9781424400782
DOIs
StatePublished - 2006
Event2006 6th IEEE Conference on Nanotechnology, IEEE-NANO 2006 - Cincinnati, OH, United States
Duration: Jun 17 2006Jun 20 2006

Publication series

Name2006 6th IEEE Conference on Nanotechnology, IEEE-NANO 2006
Volume1

Conference

Conference2006 6th IEEE Conference on Nanotechnology, IEEE-NANO 2006
Country/TerritoryUnited States
CityCincinnati, OH
Period06/17/0606/20/06

Keywords

  • Carbon nanofibers
  • Contact angle
  • Electrostatic
  • Electrowetting
  • Microfluidics
  • Superhydrophobic

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