Nature Communications (Aug 2016)

Ionic imbalance induced self-propulsion of liquid metals

  • Ali Zavabeti,
  • Torben Daeneke,
  • Adam F. Chrimes,
  • Anthony P. O’Mullane,
  • Jian Zhen Ou,
  • Arnan Mitchell,
  • Khashayar Khoshmanesh,
  • Kourosh Kalantar-zadeh

DOI
https://doi.org/10.1038/ncomms12402
Journal volume & issue
Vol. 7, no. 1
pp. 1 – 10

Abstract

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The control over the motion and deformation of liquid droplets is essential to many microfluidic and actuation systems. Zavabeti et al. demonstrate that applying a pH or ionic gradient across a droplet of liquid metal alloy of gallium results in its motion due to a breaking of the surface charge symmetry.