On-demand production of emulsion droplets over a wide range of sizes

Yoko Yamanishi, Lin Feng, Fumihito Arai

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


We have successfully produced emulsion droplets on a chip with size control and on-demand droplet generation by using a magnetically driven microtool (MMT). The MMT has a parallel plate structure to be constrained in translational motion. With a lateral motion of MMT in microchannels, the continuous phase can be cut into different size droplets and the dispersed phase flow can inflow into the microchannels by the movement of the MMT to obtain both size-controlled and on-demand droplets actively. The size range of the produced droplet was improved 3 times as large as the previous system by employing a novel hydraulic design of the chip and also leakage of the fluid was successfully prevented when it was chopped by using the MMT.

Original languageEnglish
Pages (from-to)2005-2018
Number of pages14
JournalAdvanced Robotics
Issue number14
Publication statusPublished - 2010 Oct 1


  • Droplet dispensing
  • emulsion droplet
  • magnetically driven microtool
  • poly-dimethyl siloxane

ASJC Scopus subject areas

  • Software
  • Control and Systems Engineering
  • Human-Computer Interaction
  • Hardware and Architecture
  • Computer Science Applications


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