Title: Zinc Oxide Nanowire-Poly(Methyl Methacrylate) Dielectric Layers for Polymer Capacitive Pressure Sensors
Authors: Chen, Yan-Sheng
Hsieh, Gen-Wen
Chen, Shih-Ping
Tseng, Pin-Yen
Wang, Cheng-Wei
Institute of Photonic System
Institute of Lighting and Energy Photonics
Institute of Imaging and Biomedical Photonics
Department of Photonics
Keywords: zinc oxide nanowire;poly(methyl methacrylate);dielectric composite;capacitive pressure sensor;ultralight sensitivity
Issue Date: 14-Jan-2015
Abstract: Polymer capacitive pressure sensors based on a dielectric composite layer of zinc oxide nanowire and poly(methyl methacrylate) show pressure sensitivity in the range of 2.63 x 10(-3) to 9.95 x 10(-3) cm(2) gf(-1). This represents an increase of capacitance change by as much as a factor of 23 over pristine polymer devices. An ultralight load of only 10 mg (corresponding to an applied pressure of similar to 0.01 gf cm(-2)) can be clearly recognized, demonstrating remarkable characteristics of these nanowire-polymer capacitive pressure sensors. In addition, optical transmittance of the dielectric composite layer is approximately 90% in the visible wavelength region. Their low processing temperature, transparency, and flexible dielectric film makes them a highly promising means for flexible touching and pressure-sensing applications.
URI: http://dx.doi.org/10.1021/am505880f
ISSN: 1944-8244
DOI: 10.1021/am505880f
Begin Page: 45
End Page: 50
Appears in Collections:Articles