Digital microfluidics.

@article{Choi2012DigitalM,
  title={Digital microfluidics.},
  author={Kihwan Choi and Alphonsus H. C. Ng and Ryan Fobel and Aaron R. Wheeler},
  journal={Annual review of analytical chemistry},
  year={2012},
  volume={5},
  pages={
          413-40
        }
}
Digital microfluidics (DMF) is an emerging liquid-handling technology that enables individual control over droplets on an open array of electrodes. These picoliter- to microliter-sized droplets, each serving as an isolated vessel for chemical processes, can be made to move, merge, split, and dispense from reservoirs. Because of its unique advantages, including simple instrumentation, flexible device geometry, and easy coupling with other technologies, DMF is being applied to a wide range of… 

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