28 September 2001 Microfabricated artificial-muscle-based microvalve array
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Proceedings Volume 4560, Microfluidics and BioMEMS; (2001) https://doi.org/10.1117/12.443042
Event: Micromachining and Microfabrication, 2001, San Francisco, CA, United States
Artificial muscle is defined herein as a blend of a hydrogel and a redox polymer, which dramatically swells and shrinks under environmental stimuli. This actuator can be applied to micro fabricating valves for controlled delivery systems. Previous work in our group has shown that a blend of poly(2- hydroxy ethyl)methacrylate (polyHEMA) and polyaniline displayed significant swelling and shrinking upon application of an electrochemical bias. In this type of artificial muscle, polyaniline, a redox polymer, acts as the 'electronic backbone' for transferring for most of the swelling and shrinking. However, polyHEMA showed only weak swelling an shrinking in a chemimechanical system, thus purpose of the current study is to enhance the artificial muscle actuating properties. An optimized hydrogel swelled up to 1000 percent in alkaline solution and contracted 70 percent in acid solution. An artificial muscle microvalve array was also micro fabricated and tested. These results could lead to a smart wireless drug delivery implanted system.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
KeQin He, KeQin He, Serban F. Peteu, Serban F. Peteu, Marc J. Madou, Marc J. Madou, } "Microfabricated artificial-muscle-based microvalve array", Proc. SPIE 4560, Microfluidics and BioMEMS, (28 September 2001); doi: 10.1117/12.443042; https://doi.org/10.1117/12.443042

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