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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 田維誠 | |
dc.contributor.author | Wei-Yuan Liang | en |
dc.contributor.author | 梁維元 | zh_TW |
dc.date.accessioned | 2021-06-15T11:29:18Z | - |
dc.date.available | 2021-08-24 | |
dc.date.copyright | 2016-08-24 | |
dc.date.issued | 2016 | |
dc.date.submitted | 2016-08-17 | |
dc.identifier.citation | 參考資料
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/49451 | - |
dc.description.abstract | 氣體感測器的應用範圍相當廣泛,不論是工業安全維護、環境污染偵測還是疾病早期診斷都可以看到氣體感測器的貢獻。然而過去在分辨與偵測多種氣體時,往往需要透過氣相層析儀(Gas chromatograph, GC)以及質譜儀(Mass spectrometry, MS)的協助才能達成,但是由於儀器昂貴、不便攜帶、需專業人士操作等限制,過程相當耗費成本與時間。
因此本研究致力於開發出模擬電子鼻功能的有機氣體感測陣列以及能夠分辨混合氣體中個別氣體濃度的模型。期望達到能夠一次檢測多種氣體且同時具有便利性、微小性的優點。 製程方面,本研究利用奈米研磨以及旋轉塗佈的製程,製作出由WO3, TiO2, ZnO 等三種金屬氧化物半導體材料作為感測薄膜的感測器所組成的陣列。此製程的優點包括:可以在常溫下(25oC)進行量測,不需要額外的加熱器或是光激發,以及製程中不需使用真空腔體,可大幅減少時間及成本。 透過陣列對於單一氣體的量測,得到個別感測器對於個別氣體的靈敏度,並組成「靈敏度矩陣」。由實驗結果發現,各感測器的靈敏度大小為TiO2最大,WO3居中, ZnO最小。這是因為在研磨後顆粒大小的關係,顆粒越小材料和氣體分子接觸的總表面積就越大,反應跟靈敏度也就越大。另外,針對個別感測器對氣體的靈敏度的實驗結果都可以發現到,甲醇的反應最大,接著是乙醇,最後是甲苯。這個現象可以用極性來解釋,因為金屬氧化物表面帶有極性,而極性強的氣體分子在與材料表面的吸附效率會比極性相對較弱的分子來得高。氣體吸附效率越好,反應程度也就越大,靈敏度也越大。 在混合氣體的量測實驗中,本研究所開發的氣體感測陣列利用由單一氣體實驗中得到的「靈敏度矩陣」,有效地在500-5000ppm的線性區間內求得混合氣體中甲醇、乙醇、甲苯的個別濃度與組成比例,且誤差5%之內。成功驗證利用陣列加上矩陣實驗濃度轉換的想法。 值得一提的是,本研究室本實驗室團隊首次將多個氣體感測器整合成氣體感測陣列,打破以往在氣體量測僅限於一次一種氣體的限制,大幅增加了實驗效率,也為本實驗室團隊開啟一個新的研究方向。 | zh_TW |
dc.description.abstract | In this research, a novel gas sensor array that is able to distinguish the individual concentration and fraction of each gas from mixed gas has been developed. The idea is originated from electronic nose. By using nano grinding technology, the particle size of the chosen sensing materials, which is Tungsten trioxide, Titanium dioxide, Zinc oxide, can be effectively reduced to nano scale.
There are two main advantages of using nano grinding as manufacturing process. Firstly, the sensor array can be operated room temperature (25oC), no heating process or light activation involved , due to the nano scale particle size and high surface-volume ratio. Secondly, there is no vacuum pumping equipment and annealing process involved during the the manufacturing process, which can reduced huge amount of time and cost. Methanol, Ethanol and Toluene are chosen as the detected gases. Each sensor of the sensor array (WO3, TiO2, ZnO) responds to each detected gas differently. By combining the sensitivities to a matrix, it’s possible to effectively distinguish the individual concentration of Methanol, Ethanol and Toluene from the mixed gas of these three gases. The best detection range of the sensor array is within 500 to 5000ppm. The result of 5% error rate shows that this sensor array is reliable under certain condition. | en |
dc.description.provenance | Made available in DSpace on 2021-06-15T11:29:18Z (GMT). No. of bitstreams: 1 ntu-105-R01945010-1.pdf: 7340513 bytes, checksum: 368dfd6ffa06aeea7016ba9e32a302df (MD5) Previous issue date: 2016 | en |
dc.description.tableofcontents | 第1章 緒論 1
1.1研究背景 1 1.2研究動機 3 1.3相關研究回顧 5 1.3.1電子鼻的原理與應用 5 1.3.2氣體感測器的原理與應用 6 1.4論文架構 10 第2章 氣體感測陣列之感測原理與材料回顧 11 2.1金屬氧化物半導體感測器感測原理 12 2.2金屬氧化物半導體感測材料回顧 14 2.2.1二氧化鈦 14 2.2.2 三氧化鎢 15 2.2.3 氧化鋅 16 第3章 氣體感測陣列之製作與實驗儀器架設 17 3.1晶片平台 18 3.1.1電子束蒸鍍 18 3.1.2微影 19 3.1.3晶圓切割 21 3.2奈米研磨 22 3.3薄膜塗佈 27 3.3.1晶片清洗 27 3.3.2旋塗塗佈 27 3.4晶片封裝 29 3.5氣體感測陣列組裝 30 3.6實驗量測方式 31 3.6.1實驗儀器 31 3.6.2揮發性有機化合物氣體生成系統 31 3.6.3氣體感測陣列信號讀取 33 第4章 氣體感測陣列量測結果與討論 35 4.1量測相關參數定義 35 4.2實驗設計 36 4.3個別氣體量測 39 4.3.1氣體感測陣列對於個別氣體的暫態反應與靈敏度 39 4.3.2氣體感測陣列對於個別氣體的偵測範圍 45 4.4混合氣體量測 50 4.4.1甲醇、乙醇、甲苯以1:2:0的比例混合 51 4.4.2甲醇、乙醇、甲苯以2:1:0的比例混合 53 4.4.3甲醇、乙醇、甲苯以0:1:2的比例混合 56 4.4.4甲醇、乙醇、甲苯以0:2:1的比例混合 58 4.4.5甲醇、乙醇、甲苯以1:0:2的比例混合 60 4.4.6甲醇、乙醇、甲苯以2:0:1的比例混合 62 4.5混合氣體實驗結果討論 65 4.5.1整體誤差討論 65 4.5.2個別組合誤差討論 67 第5章 結論與未來展望 69 5.1結論 69 5.2未來展望 71 5.2.1短期目標 71 5.2.2長期目標 71 參考資料 73 | |
dc.language.iso | zh-TW | |
dc.title | 以奈米研磨技術製作應用於揮發性有機氣體偵測之金屬氧化物型氣體感測陣列 | zh_TW |
dc.title | Development of metal oxide gas sensor array used in volatile organic compounds detection by nano grinding technology | en |
dc.type | Thesis | |
dc.date.schoolyear | 104-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 呂家榮,沈弘俊 | |
dc.subject.keyword | 氣體感測器,電子鼻,陣列,金屬氧化物半導體,三氧化鎢,二氧化鈦,氧化鋅,奈米研磨, | zh_TW |
dc.subject.keyword | metal oxide,gas sensor,electronic nose,sensor array,Tungsten trioxide,Titanium dioxide,Zinc oxide,nano grinding, | en |
dc.relation.page | 77 | |
dc.identifier.doi | 10.6342/NTU201602547 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2016-08-17 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 生醫電子與資訊學研究所 | zh_TW |
顯示於系所單位: | 生醫電子與資訊學研究所 |
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