Generating electric fields in PDMS microfluidic devices with salt water electrodes

Lab Chip. 2014 Aug 7;14(15):2605-9. doi: 10.1039/c4lc00078a. Epub 2014 Mar 27.


Droplet merging and sorting in microfluidic devices usually rely on electric fields generated by solid metal electrodes. We show that simpler and more reliable salt water electrodes, despite their lower conductivity, can perform the same droplet manipulations at the same voltages.

Publication types

  • Comparative Study
  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Dimethylpolysiloxanes / chemistry*
  • Electric Capacitance
  • Electrochemical Techniques*
  • Emulsions
  • Equipment Design
  • Materials Testing
  • Microelectrodes
  • Microfluidic Analytical Techniques / instrumentation*
  • Osmolar Concentration
  • Printing, Three-Dimensional
  • Sodium Chloride / chemistry*


  • Dimethylpolysiloxanes
  • Emulsions
  • Sodium Chloride
  • baysilon