Transpiration actuation: the design, fabrication and characterization of biomimetic microactuators driven by the surface tension of water

  title={Transpiration actuation: the design, fabrication and characterization of biomimetic microactuators driven by the surface tension of water},
  author={Ruba T. Borno and Joseph D. Steinmeyer and Michel M. Maharbiz},
  journal={Journal of Micromechanics and Microengineering},
  pages={2375 - 2383}
We have designed, fabricated and characterized large displacement distributed-force polymer actuators driven only by the surface tension of water. The devices were inspired by the hygroscopic spore dispersal mechanism in fern sporangia. Microdevices were fabricated through a single mask process using a commercial photo-patternable silicone polymer to mimic the mechanical characteristics of plant cellulose. An analytical model for predicting the microactuator behavior was developed using the… 

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