16 July 2001 Molecularly self-assembled actuators and devices
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Piezoelectric thin films incorporating poly(sodium 4- styrenesolfonate)(PSS) and poly(diallyldi-methylammonium chloride)(PDDA) were synthesized using the electrostatic self-assembly (ESA) process. The ESA-processed PSS/PDDA film is a layer-by-layer laminated structure, which exhibits piezoelectric response directly, with a piezoelectric coefficient d33 = 6.0 pC/N and without poling treatment. It is assumed that the self-assembly process may play a very important role in molecular alignment resulting in net polarization in the layer-by-layer structured ultrathin film, a process quite different from that used to form conventional piezoelectric films. Further study concerning the principles governing the novel ESA processing of piezoelectric films is on-going.
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Tingying Zeng, Tingying Zeng, Kristi L. Cooper, Kristi L. Cooper, Richard O. Claus, Richard O. Claus, Francisco J. Arregui, Francisco J. Arregui, "Molecularly self-assembled actuators and devices", Proc. SPIE 4329, Smart Structures and Materials 2001: Electroactive Polymer Actuators and Devices, (16 July 2001); doi: 10.1117/12.432678; https://doi.org/10.1117/12.432678

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