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Study on Extended Gate Field Effect Transistor with Nano-TiO-2 sensing membrane by Sol-Gel Method

稀有金属材料与工程 2006年第A3期35卷 252-253页

作者： Yi-Hung Liao Jung-Chuan Chou Graduate School of Engineering Science and Technology National Yunlin University of Science and TechnologyDouliouTaiwan 640China

The nano-titanium dioxide (nano-TiO_2) sensing membrane,fabricated by sol-gel technology,was used as the pH-sensing layer of the extended gate field effect transistor (EGFET) *** objective of this research is the preparation of titanium dioxide materials by sol-gel method using Ti(OBu)_4 as the *** this study,we fabricated a nano-titanium dioxide sensing layer on the ITO glass by dip *** order to examine the sensitivity of the nano-TiO_2 films applied to the EGFET devices,we adopted the ITO glass as substrate,and measured theⅠ_(DS)-Ⅴ_G curves of the nano-titanium dioxide separative structure EGFET device in the pH buffer solutions that have different pH values by the Keithley 236 *** the experimental results,we can obtain the pH sensitivities of the EGFET with nano-TiO_2 sensing membrane prepared by sol-gel method,which is 59.86mV/pH from pH 1 to pH 9.

关键词： extended gate field effect transistor(EGFET) sol-gel nano-TiO2 sensing membrane buffer solution

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维普期刊数据库

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Fiber-optic dual Fabry-Pérot interferometric carbon monoxide sensor with polyaniline/Co3O4/graphene oxide sensing membrane

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Chinese Chemical Letters 2020年第8期31卷 2145-2149页

作者： Jin Peng Jie Liao Xiaozhan Yang Wenlin Feng Department of Physics and Energy Chongqing University of TechnologyChongqing 400054China Chongqing Key Laboratory of Green Energy Materials Technology and Systems Chongqing 400054China

An optical fiber dual Fabry-Perot interferometric carbon monoxide gas sensor based on PANI/Co3 O4/GO(PCG)sensing membrane coated on the end face of the optical fiber is proposed and *** end face of photonic crystal fiber(PCF)without cut-off wavelength is fused with a single-mode fiber(SMF),and the other end face of the PCF is coated with PCG sensing *** collapsed layer formed during the air hole fusion of PCF is used as the first reflector,the interface between PCF and sensing membrane is used as the second reflector,and the interface between the sensing membrane and the air is used as the third reflector,thus the dual Fabry-Pe rot structure sensor is *** results show that the sensor has excellent sensitivity and selectivity to carbon *** the increasing concentration of carbon monoxide gas in the range of 0-60 ppm,the intensity of interference spectrum *** sensitivity of the sensor is 0.3473 dB m/ppm,and its linearity is *** response time and recovery time are 68 s and 106 s,*** sensor has the advantages of the compact size,low cost,high sensitivity,strong selectivity and simple *** is suitable for the sensing detection of low concentration carbon monoxide gas.

关键词： Carbon monoxide Dual Fabry-Perot interferometer Gas sensor PANI/Co3O4/GO sensing membrane

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维普期刊数据库

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Preparation and Properties of sensing membrane for Fiber Optic Oxygen Sensor

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Journal of Wuhan University of Technology(Materials Science) 2002年第2期17卷 51-53页

作者：姜德生 Fiber Optic sensing Technology Center Wuhan University of Technology Wuhan China

Four sensing membranes based on fluorescence quenching were prepared by sol-gel method and CA membrane method, and the Ru(Ⅱ) complexes, Ru( bpy)3 Cl2 and Ru(phen)3 Cl2 , were used as the indicators . The results indicate that the volume fraction of oxygen o2 have a linear relationship in large scale with tan0/tanfor all of the sensing membranes. They have super properties such as excellent limit of detection ,fast response time and good reproducibility. The stability of the sensing membranes made by sol-gel method is better than those by CA membranes, but the uniformity of the latter is better than that of the former.

关键词： fiber optic oxygen sensor sensing membrane fluorescence quenching

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