نتایج جستجو برای: pressure sensor

تعداد نتایج: 589018  

Journal: :Journal of Photopolymer Science and Technology 2013

Journal: :Journal of Physics: Conference Series 2011

2017
Xiao-Xiao He Jin-Tao Li Xian-Sheng Jia Lu Tong Xiao-Xiong Wang Jun Zhang Jie Zheng Xin Ning Yun-Ze Long

A multi-hierarchical porous polyaniline (PANI) composite which could be used in good performance pressure sensor and adjustable sensitivity gas sensor has been fabricated by a facile in situ polymerization. Commercial grade sponge was utilized as a template scaffold to deposit PANI via in situ polymerization. With abundant interconnected pores throughout the whole structure, the sponge provided...

Journal: :Optics letters 2010
Charles M Jewart Qingqing Wang John Canning Dan Grobnic Stephen J Mihailov Kevin P Chen

We present fiber Bragg grating pressure sensors in air-hole microstructured fibers for high-temperature operation above 800 degrees C. An ultrafast laser was used to inscribe Type II grating in two-hole optical fibers. The fiber Bragg grating resonance wavelength shift and peak splits were studied as a function of external hydrostatic pressure from 15 psi to 2000 psi. The grating pressure senso...

2014
Bingyu Wang Fan-Chun Hsieh Che-Yu Lin Shao-En Chen Fong-Zhi Chen Chia-Che Wu

In this study, we develop a clamped-clamped beam-type piezoelectric vacuum pressure sensing element. The clamped-clamped piezoelectric beam is composed of a PZT layer and a copper substrate. A pair of electrodes is set near each end. An input voltage is applied to a pair of electrodes to vibrate the piezoelectric beam, and the output voltage is measured at the other pair. Because the viscous fo...

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