The focus of this paper is projection of the performance of nastic actuators under conditions of variable stimulus with particular emphasis on pharmaceutical applications. The nastic actuator concept considered here employs controlled transport of charge and fluid across a selectively permeable membrane to achieve bulk deformation, similar to nastic movements in the plant kingdom. These membranes may utilize biological ion pumps, ion channels, and/or ion exchangers to transport fluid and ions and thereby expand/contract a phase separated inclusion. Studies to date have focused pH gradients or the spontaneous introduction of ATP chemical energy as the triggers for actuator response. In this effort the physics of the nastic actuator response under variable stimulus is considered. In addition, the possibility of controlled bursting of the nastic inclusions for vaccine delivery is explored.
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ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
October 28–30, 2008
Ellicott City, Maryland, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-4332-1
PROCEEDINGS PAPER
Applications of Biologically Inspired Membranes Available to Purchase
Eric Freeman,
Eric Freeman
University of Pittsburgh, Pittsburgh, PA
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Lisa Mauck Weiland
Lisa Mauck Weiland
University of Pittsburgh, Pittsburgh, PA
Search for other works by this author on:
Eric Freeman
University of Pittsburgh, Pittsburgh, PA
Lisa Mauck Weiland
University of Pittsburgh, Pittsburgh, PA
Paper No:
SMASIS2008-339, pp. 559-567; 9 pages
Published Online:
July 13, 2009
Citation
Freeman, E, & Weiland, LM. "Applications of Biologically Inspired Membranes." Proceedings of the ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Smart Materials, Adaptive Structures and Intelligent Systems, Volume 2. Ellicott City, Maryland, USA. October 28–30, 2008. pp. 559-567. ASME. https://doi.org/10.1115/SMASIS2008-339
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