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Proceedings Paper

Smart materials systems through mesoscale patterning
Author(s): Ilhan A. Aksay; John T. Groves; Sol M. Gruner; P. C. Y. Lee; Robert K. Prud'homme; Wei-Heng Shih; Salvatore Torquato; George M. Whitesides
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Paper Abstract

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. The first one is ideal for pattern development and the fabrication of miniaturized units in the submicron range and the second one in the 10 micrometer to 1 mm size range. By using these miniaturized units as building blocks, one can also produce smart material systems that can be used at larger length scales such as smart structural components. We have chosen to focus on two novel piezoceramic systems: (1) high-displacement piezoelectric actuators, and (2) piezoceramic hydrophone composites possessing negative Poisson ratio matrices. High-displacement actuators are essential in such applications as linear motors, pumps, switches, loud speakers, variable-focus mirrors, and laser deflectors. Arrays of such units can potentially be used for active vibration control of helicopter rotors as well as the fabrication of adaptive rotors. In the case of piezoceramic hydrophone composites, we utilize matrices having a negative Poisson's ratio in order to produce highly sensitive, miniaturized sensors. We envision such devices having promising new application areas such as the implantation of hydrophones in small blood vessels to monitor blood pressure. Negative Poisson ratio materials have promise as robust shock absorbers, air filters, and fasteners, and hence, can be used in aircraft and land vehicles.

Paper Details

Date Published: 9 February 1996
PDF: 12 pages
Proc. SPIE 2716, Smart Structures and Materials 1996: Smart Materials Technologies and Biomimetics, (9 February 1996); doi: 10.1117/12.232151
Show Author Affiliations
Ilhan A. Aksay, Princeton Univ. (United States)
John T. Groves, Princeton Univ. (United States)
Sol M. Gruner, Princeton Univ. (United States)
P. C. Y. Lee, Princeton Univ. (United States)
Robert K. Prud'homme, Princeton Univ. (United States)
Wei-Heng Shih, Drexel Univ. (United States)
Salvatore Torquato, Princeton Univ. (United States)
George M. Whitesides, Harvard Univ. (United States)

Published in SPIE Proceedings Vol. 2716:
Smart Structures and Materials 1996: Smart Materials Technologies and Biomimetics
Andrew Crowson, Editor(s)

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