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Relevant bibliographies by topics / Gas microsensors / Dissertations / Theses

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Dissertations / Theses on the topic 'Gas microsensors'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Kumar, Abhishek. "Development, characterization and experimental validation of metallophthalocyanines based microsensors devoted to monocyclic aromatic hydrocarbon monitoring in air." Thesis, Clermont-Ferrand 2, 2015. http://www.theses.fr/2015CLF22635/document.

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Résumé indisponible<br>This PhD work is dedicated to investigate potentialities of phthalocyanines materials to realize a Quartz Crystal Microbalance (QCM) sensor for Benzene, Toluene and Xylenes (BTX) detection in air. The goal is to develop a sensor-microsystem capable of measuring BTX concentrations quantitatively below the environmental guidelines with sufficient accuracy. To achieve these objectives, our strategies mainly focused on experimental works encompassing sensors realization, sensing material characterizations, development of gas-testing facility and sensor testing for different

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2

Abercrombie, Matthew G. "Acoustic microsensor with optical detection for high-temperature, high-pressure environments." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/19467.

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3

Al-Khalifa, Sherzad. "Identification of a binary gas mixture from a single resistive microsensor." Thesis, University of Warwick, 2000. http://wrap.warwick.ac.uk/52652/.

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Increasing concern about the rapid escalation of environmental pollution has led to strong legislation to ensure, for example, that the emission of pollutants from vehicles and industries is controlled to an acceptable level. As a consequence, there has been a rapid expansion of research into developing more efficient and low-cost gas monitoring systems. Currently, commercial solid-state atmospheric gas detection systems are based on one sensor for each gas, while research systems are an array of sensors for the detection of multiple gases. In this research, techniques are developed whereby mo

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4

Lawson, Bruno. "Nouvelle approche de suivi non invasif de l'alcoolémie par perspiration à l'aide de multicapteurs MOX." Electronic Thesis or Diss., Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0698.

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Nous proposons dans le cadre de ce travail de thèse, une nouvelle approche de la détection non invasive de l’alcoolémie sanguine à l’aide de microcapteurs d’éthanol à base de SnO2. Cette méthodologie se base sur une détection indirecte de l’alcoolémie sanguine par une mesure des vapeurs d’éthanol émises par la perspiration cutanée suite à une consommation d’alcool. Afin de valider cette approche, il a fallu dans un premier temps démontrer la pertinence et la faisabilité de cette méthodologie de détection par la réalisation d’essais cliniques pilotes en collaboration avec une équipe médicale d’

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5

Le, Pennec Fabien. "Développement de microcapteurs pour la mesure de dioxyde de carbone (CO2) : application au suivi de la qualité de l’air." Electronic Thesis or Diss., Aix-Marseille, 2022. http://www.theses.fr/2022AIXM0148.

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A la différence de la pollution de l’air extérieur, celle de l’air intérieur est restée relativement peu étudiée jusqu’au début des années 2000. Pourtant, nous passons en moyenne 85 % de notre temps dans des environnements clos (domicile, bureaux, transports…) dans lesquels nous sommes exposés à de nombreux polluants. De nombreuses études ont montré que la mesure de la concentration du dioxyde de carbone, permet d’évaluer le confinement de l’air intérieur. Pour mesurer les polluants, nous pouvons distinguer les analyseurs et les microcapteurs, avec chacun ses avantages et ses inconvénients. Da

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6

Chawich, Juliana. "ZnO/GaAs-based acoustic waves microsensor for the detection of bacteria in complex liquid media." Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCD012/document.

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Cette thèse s’inscrit dans le cadre d’une cotutelle internationale entre l’Université de Bourgogne Franche-Comté en France et l’Université de Sherbrooke au Canada. Elle porte sur le développement d'un biocapteur miniature pour la détection et la quantification de bactéries dans des milieux liquides complexes. La bactérie visée est l’Escherichia coli (E. coli), régulièrement mise en cause dans des épidémies d'infections alimentaires, et parfois meurtrière.La géométrie du biocapteur consiste en une membrane en arséniure de gallium (GaAs) sur laquelle est déposé un film mince piézoélectrique d’ox

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7

Tsai, Ming-Chang, and 蔡明璋. "Gas Microsensors Based on the Nanoporous Structures." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/72631288731412096447.

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碩士<br>逢甲大學<br>自動控制工程學系<br>102<br>The research develops self-assembled anodic titanium oxide arrays fabricated by anodization and combines the microheater and temperature sensor manufactured by the photolithography and life-off process of the micro-electro-mechanical system technology to selectively detect the CO and CHCl3 gas in room temperature. The advantages of the gas sensors combine anodic titanium oxide thin film, noble metal electrodes, microheater and temperature sensor in the chip have small volume, high stability, high sensitivity and accuracy. The TiO2 arrays fabricated by anodizat

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8

Liu, Tze-chun, and 劉澤鈞. "Gas Microsensors Based on Nanoporous Anodic Aluminum Oxide." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/29622697040391545281.

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碩士<br>逢甲大學<br>自動控制工程所<br>99<br>A novel CO gas microsensor with tungsten oxide (WO3) sensing film on nanoporous anodic aluminum oxide (AAO) layer has been performed on anodic aluminum oxide template at operation temperature of 25 ℃. Based on microelectromechanical system (MEMS) technology, the microstructures are realized with porous AAO template, WO3 thin films, heaters, and interdigital temperature sensors. The platinum films were deposited to form the heaters, temperature sensors, and interdigital electrodes. To enhance sensitivity, the sputtered WO3 was grown on various nanoporous AAO stru

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9

Yang, Ming-Zhi, and 楊閔智. "Integrated Gas Microsensors Array with Circuits on a Chip." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/65522409721908871607.

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博士<br>國立中興大學<br>機械工程學系所<br>103<br>This study illustrates an integrated gas microsensors array chip fabricated using the standard 0.18 μm CMOS (complementary metal oxide semiconductor) process. The chip includes four gas sensors, four readout circuits and thermometers. The objectives of this study are to utilize the integrated gas microsensors array chip to detect four kinds of volatile organic compound (VOC) gases, the relative humidity of the surroundings and the ambient temperature. After completion of the CMOS process, the chip requires a post-process to etch the sacrificial layer between t

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10

Zhuang, Yu-Xiang, and 莊寓翔. "Development of Nanofiber-based Gas Microsensors by Using Electrospun Technology." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/49677804564614472572.

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碩士<br>逢甲大學<br>自動控制工程學系<br>103<br>The research presents the design of metal-oxide semiconductor gas microsensors based on MEMS technology and nano-properties for sensing CO gas. Sensitivity is defined by measuring the variation of resistance for sensing layers caused by Schottky contanct when gas specimens adsorb on the surface of sensing films. In2O3 nanofibers sensing film with heaters is fabricated by electrospinning, lithography and deep etching processes. The devices can increase effective sensing area for chemical reactions on which CO gas molecules can be adsorbed to improve operation pr

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11

Wen-Chieh, Huang, and 黃文傑. "Design of Metal Oxide Multilayer-based Nanoporous Gas Microsensors Using Hydrothermal Synthesis Method." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/87263916368145534125.

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碩士<br>逢甲大學<br>自動控制工程學系<br>104<br>A compound sensing structure based on nanoflower-like zinc oxide (ZnO-SnO2) on the top of the nanoporous anodic aluminum oxide (AAO) layer is developed. The powder agglomeration phenomenon of microfabrication process was improved by using a surfactant to obtain uniform nanoflowers of ZnO-SnO2 as a sensing layer for detecting ethanol and methanol gases. The ZnO-SnO2 powders were synthesized using hydrothermal synthesis method. The crystalline phases and purity of the synthesized 3D hierarchical SnO2 nanostructures were analyzed using a X-ray powder diffraction (

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12

Liao, Chi-ann, and 廖啟安. "Development of A Hollow Nanofiber-based Gas Microsensors Using the Coaxial Electrospun Technology." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/33117206839217003631.

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碩士<br>逢甲大學<br>自動控制工程學系<br>102<br>The research presents the design of metal-oxide semiconductor micro gas sensors base on MEMS technology with nano-properties for CO gas sensing. Sensitivity is defined by measuring the variation of resistance for sensing layers caused by Schottky contanct when gas specimens adsorb on the surface of sensing films. Using via lithography to produce patterns on the wafer. Then using the coaxial electrospinning technology to produce indium oxide nano hollow fiber spinning on the wafer as the sensing film, and a heater made via lithography and deep etching processes,

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13

Li, Guan-pei, and 李冠霈. "Development of Microsensors for NOx Gas Detection Based on Porous Silicon and Nano Structures." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/32929131471077364547.

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碩士<br>逢甲大學<br>產業研發碩士班<br>97<br>This study presents the design of metal-oxide micro gas sensors based on MEMS technology with porous silicon and nano-properties for NOx gas sensing in low concentration(5ppm) at relative low temperature(25℃∼60℃). Sensitivity is defined by measuring the variation of resistance for sensing layers caused by Schottky contact when gas specimens adsorb on the surface of sensing films. It is proposed that sensing films deposited onto the porous silicon surface fabricated by electrochemical etching are mixed with WO3 and MWCNTs by a sol-gel technique in order to increas

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14

Kaur, Jaswinder. "Synthesis and characterization of nano-metal oxide based gas sensor materials and fabrication of microsensors." Thesis, 2009. http://localhost:8080/iit/handle/2074/4338.

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15

Lawson, Bruno Latevi. "Nouvelle approche de suivi non invasif de l'alcoolémie par perspiration à l'aide de multicapteurs MOX." Thesis, 2018. http://www.theses.fr/2018AIXM0698/document.

Full text

Abstract:

Nous proposons dans le cadre de ce travail de thèse, une nouvelle approche de la détection non invasive de l’alcoolémie sanguine à l’aide de microcapteurs d’éthanol à base de SnO2. Cette méthodologie se base sur une détection indirecte de l’alcoolémie sanguine par une mesure des vapeurs d’éthanol émises par la perspiration cutanée suite à une consommation d’alcool. Afin de valider cette approche, il a fallu dans un premier temps démontrer la pertinence et la faisabilité de cette méthodologie de détection par la réalisation d’essais cliniques pilotes en collaboration avec une équipe médicale d’

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16

Jian, Rih-Sheng, and 簡日昇. "Integrated Gas Chromatograph Detector Employing Microsensor Array of Monolayer Protected Gold nano-Cluster Chemiresistors." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/69684091779597402459.

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碩士<br>輔仁大學<br>化學系<br>95<br>Monolayer Protected Gold nano-Clusters(MPC) were synthesized by the two phase method and used as organic vapor sensing materials in this research. We have synthesized four different ligand shell protected nano-cluster including 1-Octanethiol, Isooctyl 3-mercapropionate and mixed ligand of 1-Octanethiol: 3-mercaptopropionic acid, 4-pyridinethiol. The four MPC’s materials coated with array of chemiresistor micro- sensors and integrated gas chromatograph detector for 8 organic vapors sensing of various functional groups. We established the model of gas molecules diffuse

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