Amplitude scaling of a static wrinkle at an oil-air interface created by dielectrophoresis forces

C. V. Brown, W. Al-Shabib, G. G. Wells, G. McHale, M. I. Newton

Research output: Contribution to journalArticlepeer-review

Abstract

Dielectrophoresis forces have been used to create a static periodic wrinkle with a sinusoidal morphology on the surface of a thin layer of 1-decanol oil. The surface deformation occurs when a voltage V is applied between adjacent coplanar strip electrodes in an interdigitated array onto which the oil film is coated. It has been shown experimentally that the peak-to-peak amplitude A of the wrinkle scales according to the functional form A∝V2 exp(-α/p) for a range of oil film thicknesses (between 15 and 50 μm) and wrinkle pitches p (160, 240, and 320 μm).
Original languageEnglish
Pages (from-to)242904
Number of pages1
JournalApplied Physics Letters
Volume97
Issue number24
DOIs
Publication statusPublished - 13 Dec 2010

Keywords

  • deformation
  • electrophoresis
  • interface phenomena
  • liquid films
  • oils
  • surface morphology

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