22 July 2003 Power consumption of piezoelectric actuators with multiwalled carbon nanotube film deposition
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This paper investigates the impact of non-intrusive carbon nanotube coatings on the power consumption of piezoceramic sheet actuators. Due to their nano-scale cylindrical structure, carbon nanotubes provide an order of magnitude increase in the exposed surface area compared to the uncoated piezoceramic sheet. This along with their excellent thermal conductivity allows the nanotube coating to act as a heat sink, drawing energy away from the bulk piezoceramic material and dissipating it to the atmosphere. To demonstrate the proof-of-concept multiwalled carbon nanotube thin films were deposited on the surfaces of 10 mil thick, commercially available PZT-5H sheets. The piezoelectric sheets were actuated at several different excitation frequencies and voltage settings, both before and after application of the nano-film coating. Strain, perpendicular to the poling direction, and current measurements made on these samples indicated that while the piezoelectric samples with nano-film coating exhibited strain behavior similar to the baseline uncoated samples, they required upu to 15% less peak power for high frequency actuation.
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Ashish Modi, Ashish Modi, Nikhil A. Koratkar, Nikhil A. Koratkar, } "Power consumption of piezoelectric actuators with multiwalled carbon nanotube film deposition", Proc. SPIE 5055, Smart Structures and Materials 2003: Smart Electronics, MEMS, BioMEMS, and Nanotechnology, (22 July 2003); doi: 10.1117/12.483570; https://doi.org/10.1117/12.483570

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