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Proceedings Paper

Optoelectronic and acoustic properties and their interfacial durability of GnP/PVDF/GnP composite actuators with nano-structural control
Author(s): Joung-Man Park; Dong-Jun Kwon; Zuo-Jia Wang; Ga-Young Gu; Lawrence DeVries
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Paper Abstract

Nano- and hetero-structures of carbon nanotube (CNT), indium tin oxide (ITO), and Graphene nano Platelet (GnP) can control significantly piezoelectric and optoelectronic properties in Microelectromechanical Systems (MEMS) as acoustic actuators. Interfacial durability and electrical properties of CNT, ITO or GnP coated poly(vinylidene fluoride) (PVDF) nanocomposites were investigated for use in acoustic actuator applications. The GnP coated PVDF nanocomposite exhibited better electrical conductivity than either CNT or ITO, due to the unique electrical properties of GnP. GnP nanocomposite coatings also exhibited good acoustical properties. Contact angle, surface energy, work of adhesion, and spreading coefficient measurements were used to explore the interfacial adhesion durability between neat CNT (or plasma treated CNT) and plasma treated PVDF. The acoustic actuation performance of GnP coated PVDF nanocomposites were investigated for different radii of curvature and different coating conditions, using a sound level meter. GnP is considered to be a more appropriate acoustic actuator than either CNT or ITO because of its characteristic electrical properties. A radius of curvature of about 15 degrees was established as being most appropriate. Sound characteristics differed with varying coating thicknesses. The results of this study suggest that it should be possible to manufacture transparent actuators with good sound quality.

Paper Details

Date Published: 9 March 2013
PDF: 8 pages
Proc. SPIE 8614, Reliability, Packaging, Testing, and Characterization of MOEMS/MEMS and Nanodevices XII, 86140C (9 March 2013); doi: 10.1117/12.2000111
Show Author Affiliations
Joung-Man Park, Gyeongsang National Univ. (Korea, Republic of)
The Univ. of Utah (United States)
Dong-Jun Kwon, Gyeongsang National Univ. (Korea, Republic of)
Zuo-Jia Wang, Gyeongsang National Univ. (Korea, Republic of)
Ga-Young Gu, Gyeongsang National Univ. (Korea, Republic of)
Lawrence DeVries, The Univ. of Utah (United States)

Published in SPIE Proceedings Vol. 8614:
Reliability, Packaging, Testing, and Characterization of MOEMS/MEMS and Nanodevices XII
Rajeshuni Ramesham; Herbert R. Shea, Editor(s)

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