Transportation of a liquid droplet at ultra-low voltages by tunable wetting on conjugated polymer electrodes

W. Xu, Y. Tian, H. Bisaria, P. Ahn, C. H. Choi, E. H. Yang

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

3 Scopus citations

Abstract

This paper presents the experimental results on the controlled transportation of a liquid droplet on dodecylbenzenesulfonate doped polypyrrole (PPy(DBS)) electrodes for ultra-low voltage digital microfluidics applications. The PPy(DBS) surface fabricated by the electropolymerization method exhibits a tunable wettability upon reduction and oxidation at low voltages (0.90.6V). By utilizing an asymmetric change of surface wettability on patterned PPy(DBS)-coated electrodes, lateral, controllable transportation of liquid droplets on the PPy(DBS) surface with underlying electrodes was successfully demonstrated with low voltages ( 1V). The actuation behavior of the liquid droplet during the transportation was characterized and analyzed.

Original languageEnglish
Title of host publication2013 Transducers and Eurosensors XXVII
Subtitle of host publicationThe 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013
Pages2185-2188
Number of pages4
DOIs
StatePublished - 2013
Event2013 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013 - Barcelona, Spain
Duration: 16 Jun 201320 Jun 2013

Publication series

Name2013 Transducers and Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013

Conference

Conference2013 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013
Country/TerritorySpain
CityBarcelona
Period16/06/1320/06/13

Keywords

  • Droplet manipulation
  • microfluidics
  • polypyrrole
  • tunable wetting

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