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

@article{Borno2006TranspirationAT,
  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},
  year={2006},
  volume={16},
  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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References

SHOWING 1-10 OF 37 REFERENCES

A distributed actuation method based on Young-Laplace forces

  • R. T. BornoM. Maharbiz
  • Engineering
    The 13th International Conference on Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05.
  • 2005
The paper presents biomimetic microactuators that scavenge the energy in evaporating water at room temperature to generate high force densities and large tip deflections. Curved, millimeter-long

Smart materials systems through mesoscale patterning

We report work on the fabrication of smart materials with two unique strategies: (1) self- assembly and (2) laser stereolithography. Both methods are akin to the processes used by biological systems.

Nanoindentation of polydimethylsiloxane elastomers: Effect of crosslinking, work of adhesion, and fluid environment on elastic modulus

With the potential to map mechanical properties of heterogeneous materials on a micrometer scale, there is growing interest in nanoindentation as a materials characterization technique. However,

Re-configurable fluid circuits by PDMS elastomer micromachining

  • D. ArmaniC. LiuN. Aluru
  • Engineering
    Technical Digest. IEEE International MEMS 99 Conference. Twelfth IEEE International Conference on Micro Electro Mechanical Systems (Cat. No.99CH36291)
  • 1999
We report on a microfabrication technique for realizing re-configurable micro fluidics devices using polymethylsiloxane material (PDMS). The mechanical characteristics of the material, including the

Microstructure to substrate self-assembly using capillary forces

We have demonstrated the fluidic self-assembly of micromachined silicon parts onto silicon and quartz substrates in a preconfigured pattern with submicrometer positioning precision. Self-assembly is

Fabrication of Micrometer‐Scale, Patterned Polyhedra by Self‐Assembly

We recently proposed and demonstrated a strategy for fabricating self-assembling, three-dimensional (3D) electrical networks. In this demonstration, we used millimeter scale building blocks

Modeling of capillary forces and binding sites for fluidic self-assembly

  • K. BohringerU. SrinivasanR. Howe
  • Engineering
    Technical Digest. MEMS 2001. 14th IEEE International Conference on Micro Electro Mechanical Systems (Cat. No.01CH37090)
  • 2001
Massively parallel self-assembly is emerging as an efficient, low-cost alternative to conventional pick-and-place assembly of microfabricated components. The fluidic self-assembly technique we have

The Use of Surface Tension for the Design of MEMS Actuators

This paper attempts to shine light to a fundamental shift of mechanics as the scale of mechanical elements goes down far below millimeters, where the role of inertia becomes negligible in nanometer scale by all practical means.

Surface tension-powered self-assembly of microstructures - the state-of-the-art

Because of the low dimensional power of its force scaling law, surface tension is appropriate for carrying out reshaping and assembly in the microstructure size domain. This paper reviews work on

Self-assembly for microscale and nanoscale packaging: steps toward self-packaging

The packaging of microelectromechanical systems (MEMS) and nanoscale devices constitutes an important area of research and development that is vital to the commercialization of such devices.