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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 范士岡(Shih-Kang Fan) | |
dc.contributor.author | Hanlai Chen | en |
dc.contributor.author | 陳寒來 | zh_TW |
dc.date.accessioned | 2021-07-11T14:43:03Z | - |
dc.date.available | 2019-10-26 | |
dc.date.copyright | 2016-10-26 | |
dc.date.issued | 2016 | |
dc.date.submitted | 2016-08-14 | |
dc.identifier.citation | [1] Mugele, F., Baret, J. C. (2005). Electrowetting: from basics to applications. Journal of Physics: Condensed Matter 17.28 (2005): R705.
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Applied Physics Letters 89.5 (2006): 052509. [27] Beyzavi, Ali, and Nam-Trung Nguyen. 'One-dimensional actuation of a ferrofluid droplet by planar microcoils.' Journal of Physics D: Applied Physics 42.1 (2008): 015004. [28] Samad, Mst Fateha, and Abbas Z. Kouzani. 'Design and analysis of a low actuation voltage electrowetting-on-dielectric microvalve for drug delivery applications.' Engineering in Medicine and Biology Society (EMBC), 2014 36th Annual International Conference of the IEEE. IEEE, 2014. [29] FERROLIC, Where digital meets nature, http://www.ferrolic.com/. [30] When Science Meets Art: Fabian Oefner at TED GLOBAL 2013, http://fabianoefner.com/. [31] 賴奕翰,『電控微流體微影技術於生醫材料圖案化與三維細胞共養研究』,國立台灣大學機械工程學研究所碩士論文,2015年。 [32] T. B. Jones, M. Gunji, M. Washizu, and M. J. Feldman, 'Dielectrophoresis liquid actuation and nanodroplet formation, ' J. Appl. Phys., vol. 89, pp. 1, 2001. [33] H. Pellat, C. R. Seances, Acad. Sci. (Paris), vol. 119, pp. 675, 1894. [34] I. Sumoto, 'Climbing of liquid dielectrics up along electrode, ' Oyo Buturi, vol. 25, No. 6, pp. 264-265, 1956. [35] W. F. Pickard, 'Experimental investigation of the Sumoto effect,' J. App. Phys. vol 32, No 10, pp 1888-1893, 1961. [36] A. Watanabe, 'Investigations of some electric force effects in dielectric liquid, ' Japanese J. Appl. Phys., Vol. 12, No. 4, pp. 593-602, 1973. [37] H. A. Pohl, “The motion and precipitation of suspensoids in divergent electric fields,” J. Appl. Phys., pp. 869, 1951. [38] H. A. Pohl, 'Dielectrophoresis: the behavior of neutral matter in nonuniform electric fields, ' Cambridge University Press, Cambridge, UK, 1987. [39] Fax, R. G., M. Hurwitz, and J. R. Melcher. 'Dielectrophoretic liquid expulsion.'Journal of Spacecraft and Rockets 6.9 (1969): 961-967. [40] Jones, Thomas B., et al. 'Dielectrophoretic liquid actuation and nanodroplet formation.' Journal of applied Physics 89.2 (2001): 1441-1448. [41] Ferrofluid, In Wikipedia, the free encyclopedia, modified on 7 February 2016, https://en.wikipedia.org/wiki/Ferrofluid. [42] Torres-Diaz, I., and C. Rinaldi. 'Recent progress in ferrofluids research: novel applications of magnetically controllable and tunable fluids.' Soft matter 10.43 (2014): 8584-8602. [43] Exploring the nano world-ferrofluid, adapted from Teaching General Chemistry: A Materials Science Companion by A. B. Ellis, et al, from http://education.mrsec.wisc.edu/background/ferrofluid/. [44] Fan, Shih-Kang, et al. 'Asymmetric electrowetting-moving droplets by a square wave.' Lab on a Chip 7.10 (2007): 1330-1335. [45] Brassard, Daniel, et al. 'Water-oil core-shell droplets for electrowetting-based digital microfluidic devices.' Lab on a Chip 8.8 (2008): 1342-1349. [46] Pollack, M. G., A. D. Shenderov, and R. B. Fair. 'Electrowetting-based actuation of droplets for integrated microfluidics.' Lab on a Chip 2.2 (2002): 96-101. [47] Fan, Shih-Kang, et al. 'Reconfigurable liquid pumping in electric-field-defined virtual microchannels by dielectrophoresis.' Lab on a Chip 9.11 (2009): 1590-1595. [48] 馮國敬,『介電泳驅動球形粒子的運動速度及其影響因素研究』,哈爾濱工業大學碩士學位論文,2012年。 [49] 杜怡君、張毓娟、翁乙壬、蘇怡帆、陳世毓、梁哲銘、葉巧雯、吳信璋、卓育泯,『磁性基本特性及磁性材料應用』,國立台灣大學化學系,2014年。 [50] Fan, Shih-Kang, Yao-Wen Hsu, and Chiun-Hsun Chen. 'Encapsulated droplets with metered and removable oil shells by electrowetting and dielectrophoresis.' Lab on a Chip 11.15 (2011): 2500-2508. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/78126 | - |
dc.description.abstract | 鐵磁流體因其同時具有磁性且可流動之雙重特性,在電子設備、機械工程、國防航空、生物醫學等領域得到應用,也因其奈米級粒子尺寸,可充分使用於微奈米流體機械系統中。儘管鐵磁流體被廣泛用於微流體系統中,充當栓塞、閥門、活塞等驅動其他不互溶之流體,但對於鐵磁流體本身之操控卻很少有研究報導。本研究主要於微流體平台上,運用介電濕潤、介電泳及電磁力操控鐵磁流體液滴,比較不同的力在不同條件下對鐵磁流體的操控表現,以尋求鐵磁流體在微流體平台上操控的最佳條件。我們選用了水性鐵磁流體(EMG 700, Ferrotec Corporation)和油性鐵磁流體(EFH 1, Ferrotec Corporation)兩種基載液不同的鐵磁流體。首先,探討了在ITO玻璃為基板之平行板裝置上,於不同環境(空氣、2 cSt矽油)中和不同兩板間距(50 μm、100 μm)下,產生液滴並操控其來回移動所需的最佳操作頻率,以及不同電壓下液滴的移動速度。然後,在晶片上以介電潤濕原理驅動由水性鐵磁流體、油性鐵磁流體、純水、2 cSt矽油組成的三種核殼結構液滴移動情況。接著,在晶片上運用介電泳原理,探討在不同環境(空氣、矽油)中,施加電壓與液體形成的最小寬度之間的關係,以此驗證鐵磁流體被高精度圖案化的可能性。此外,我們採用了含有螺旋線圈圖案的PCB板,通過接通直流電產生局部磁場,企圖以電磁力驅動板上的鐵磁流體液滴,並比較PCB板和ITO玻璃上以介電潤濕力驅動液滴之情況。 | zh_TW |
dc.description.abstract | Ferrofluids, synthesized as a stable colloidal suspension of permanently magnetized particles such as magnetite of 10 nm diameter, are an excellent choice for micro/nanoelectromechanical system (MEMS/NEMS). Although magnetically actuated plugs of ferrofluids have been used to design microfluidic valves, pistons, and pumps, manipulations of ferrofluids with electromicrofluidic have not been systematically investigated. In this thesis, we demonstrated fundamental studies of ferrofluid droplet manipulations by electrowetting-on-dielectric (EWOD), liquid dielectrophoresis (LDEP), and electromagnetic forces. We examined water-based (EMG 700) and oil-based (EFH 1) ferrofluids from Ferrotec Corporation. EWOD occurred in a parallel-plate ITO-glass device when voltage greater than the threshold voltage was applied to move the water-based ferrofluid droplets at a voltage-dependent velocity. The optimal frequency and required minimum voltage to drive a droplet following the signal applied back and forth on the five driving electrodes for at least one cycle between two plates with varied space (height 50 and 100 μm) and in different surroundings (air and 2 cSt silicone oil) were recorded and plotted. In addition, we prepared three kinds of core-shell encapsulated droplets: water-core and oil-shell, water-based-ferrofluid-core and oil-shell, and water-core and oil-based-ferrofluid-shell, to evaluate the relationship between the velocity and applied signal. Moreover, we patterned ferrofluids by designed electrodes on ITO-glass chips by pumping ferrofluids with LDEP in air or silicone oil on a tapered electrode with a decreasing width from 200 to 10 μm and measured linewidth against the applied voltages across the two plates 50 μm apart. We adopted spiral coils arrays on PCB to generate local electromagnetic fields and to manipulate ferrofluid droplets by electromagnetic forces. | en |
dc.description.provenance | Made available in DSpace on 2021-07-11T14:43:03Z (GMT). No. of bitstreams: 1 ntu-105-R03522322-1.pdf: 6840791 bytes, checksum: 8073bd0fab3bd6c20d810f27ea14a578 (MD5) Previous issue date: 2016 | en |
dc.description.tableofcontents | 中文摘要 i
ABSTRACT ii 誌謝 iv 目錄 vi 圖目錄 ix 表目錄 xiv Chapter 1 緒論 1 1.1 研究背景 1 1.2 文獻回顧 2 1.2.1 微流體系統 2 1.2.2 鐵磁流體研究 6 1.3 研究方法及目的 20 Chapter 2 理論介紹 21 2.1 介電濕潤理論 21 2.2 介電泳理論 22 2.3 鐵磁流體 24 2.3.1 鐵磁流體基本概念 24 2.3.2 鐵磁流體垂直磁場不穩定性 25 2.3.3 製備鐵磁流體原理 26 Chapter 3 實驗製程、儀器及系統介紹 28 3.1 微流體ITO玻璃晶片結構及製程 28 3.1.1 清洗晶片 29 3.1.2 蒸鍍HMDS 29 3.1.3 塗佈正光阻 29 3.1.4 定義電極圖案 30 3.1.5 濕蝕刻 (wet etching) 31 3.1.6 塗佈介電層 31 3.1.7 塗佈疏水層 32 3.2 PCB板結構及製程 33 3.3 實驗儀器與材料 33 3.4 實驗系統介紹 40 3.4.1 接觸角量測系統 40 3.4.2 電控微流體晶片操控系統 42 Chapter 4 實驗過程與結果討論 44 4.1 鐵磁流體基本性質探究 44 4.1.1 鐵磁流體在外加磁場中的表現 45 4.1.2 鐵磁流體在水和矽油中的溶解性 46 4.1.3 接觸角量測 47 4.2 ITO玻璃晶片之水性鐵磁流體(EMG 700)操控 52 4.2.1 介電濕潤實驗之晶片設計與操作 52 4.2.2 水性鐵磁流體利用介電濕潤操控實驗結果與分析 53 4.2.3 介電泳實驗之晶片設計與操作 56 4.2.4 水性鐵磁流體利用介電泳操控實驗結果與分析 57 4.2.5 介電泳驅控能力實驗之晶片設計與操作 57 4.2.6 介電泳驅控能力實驗結果與分析 58 4.3 ITO玻璃晶片之油性鐵磁流體(EFH 1)操控 61 4.3.1 油性鐵磁流體操控之實驗操作及結果 61 4.3.2 油性鐵磁流體操控之探討分析 63 4.3.3 介電泳實驗之晶片設計與操作 65 4.3.4 油性鐵磁流體利用介電泳操控實驗結果與分析 66 4.4 核殼結構(Core-shell)液滴移動 66 4.4.1 晶片設計與實驗操作 67 4.4.2 實驗結果與分析 67 4.5 PCB板之鐵磁流體操控 73 4.5.1 PCB設計與實驗操作 73 4.5.2 水性鐵磁流體(EMG 700)實驗結果與分析 75 4.5.3 油性鐵磁流體(EFH 1)實驗結果與分析 77 Chapter 5 未來展望 80 參考文獻 84 | |
dc.language.iso | zh-TW | |
dc.title | 於電控微流體平台上操控鐵磁流體液滴 | zh_TW |
dc.title | Ferrofluid Droplet Manipulations on an Electromicrofluidic Device | en |
dc.type | Thesis | |
dc.date.schoolyear | 104-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 陳慶耀(Ching-Yao Chen),衛榮漢(Zung-Hang Wei),翁輝竹(Huei Chu Weng) | |
dc.subject.keyword | 鐵磁流體,微流體平台,介電濕潤,核殼結構,介電泳,電磁力, | zh_TW |
dc.subject.keyword | ferrofluid,electromicrofluidic device,electrowetting,core-shell droplet,dielectrophoresis,magnetic force, | en |
dc.relation.page | 87 | |
dc.identifier.doi | 10.6342/NTU201602424 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2016-08-15 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
顯示於系所單位: | 機械工程學系 |
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