Miniaturized shape memory alloy pumps for stepping microfluidic transport

Fumihiro Sassa, Yazan Al-Zain, Takahiro Ginoza, Shuichi Miyazaki, Hiroaki Suzuki

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


A shape memory alloy (SMA) actuator and a polydimethylsiloxane (PDMS) elastic tube were used to realize a simple pump. A liquid plug in a flow channel could be moved forward and backward reversibly by exploiting the shape memory properties of the actuator. Two SMA sheets were used to create a peristaltic pump capable of moving a solution forward and backward over a long distance. The stepping transport caused by applying pulses of electric power facilitated the adjustment of the plug's position. Manipulations such as volume measurement and the merging of two plugs were demonstrated using a microfluidic device with a T-junction.

Original languageEnglish
Pages (from-to)157-163
Number of pages7
JournalSensors and Actuators, B: Chemical
Issue number1
Publication statusPublished - Apr 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


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