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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 李世光 | |
dc.contributor.author | Han-Lung Chen | en |
dc.contributor.author | 陳漢龍 | zh_TW |
dc.date.accessioned | 2021-06-16T16:42:57Z | - |
dc.date.available | 2017-08-28 | |
dc.date.copyright | 2012-08-28 | |
dc.date.issued | 2012 | |
dc.date.submitted | 2012-08-22 | |
dc.identifier.citation | [1] G. M. Sessler, 'Electrets,' ed: Berlin: Springer-Verlag, 1987.
[2] M. Paajanen, et al., 'ElectroMechanical Film (EMFi) — a new multipurpose electret material,' Sensors and Actuators A: Physical, vol. 84, pp. 95-102, 2000. [3] D. M. Chiang and J. L. Chen, 'A novel flexible loudspeaker driven by an electret diaphragm,' presented at the Audio Engineering Society 121st Convention, San Francisco, USA, 2006. [4] W. C. Ko, et al., 'Use of 2-(6-mercaptohexyl) malonic acid to adjust the morphology and electret properties of cyclic olefin copolymer and its application to flexible loudspeakers,' Smart Materials and Structures, vol. 19, p. 055007, 2010. [5] W. C. Ko, 'Charge storage and mechanical properties of porous PTFE and composite PTFE/COC electrets,' e-Polymers, vol. no. 032, 2010. [6] D.-M. Chiang, et al., 'PALS and SPM/EFM investigation of charged nanoporous electret films,' Chemical Physics Letters, vol. 412, pp. 50-54, 2005. [7] http://www.tomshw.it/cont/news/fils-una-pellicola-che-suona-come-un-altoparlante/23491/1.html [8] T. T. Wang, The applications of ferroelectric polymers. New York: Blackie, 1988. [9] M. Wegener and S. Bauer, 'Microstorms in Cellular Polymers: A Route to Soft Piezoelectric Transducer Materials with Engineered Macroscopic Dipoles,' ChemPhysChem, vol. 6, pp. 1014-1025, 2005. [10] J. L. Ealo, et al., 'Broadband EMFi-based transducers for ultrasonic air applications,' Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on, vol. 55, pp. 919-929, 2008. [11] S. J. Rupitsch, et al., 'Ultrasound transducers based on ferroelectret materials,' Dielectrics and Electrical Insulation, IEEE Transactions on, vol. 18, pp. 69-80, 2011. [12] J. L. Ealo, et al., 'Customizable field airborne ultrasonic transducers based on electromechanical film,' in Ultrasonics Symposium, 2008. IUS 2008. IEEE, 2008, pp. 879-882. [13] J. L. Ealo, et al., 'Airborne ultrasonic vortex generation using flexible ferroelectrets,' Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on, vol. 58, pp. 1651-1657, 2011. [14] S. Kärki, et al., 'EMFi in wearable audio applications ' presented at the 4th International Workshop on Wearable and Implantable Body Sensor Networks (BSN 2007), 2007. [15] C. S. Lee, et al., 'Flexible and transparent organic film speaker by using highly conducting PEDOT/PSS as electrode,' Synthetic Metals, vol. 139, pp. 457-461, 2003. [16] T. Sugimoto, et al., 'PVDF-driven flexible and transparent loudspeaker,' Applied Acoustics, vol. 70, pp. 1021-1028, 2009. [17] X. Yu, et al., 'Carbon nanotube-based transparent thin film acoustic actuators and sensors,' Sensors and Actuators A: Physical, vol. 132, pp. 626-631, 2006. [18] J.-J. Kang and K. Um, 'Carbon Nanotube as a New Coating Material for Developing Two Dimensional Speaker Systems Advanced Communication and Networking.' vol. 199, T.-h. Kim, et al., Eds., ed: Springer Berlin Heidelberg, 2011, pp. 460-465. [19] H. Kallmann and B. Rosenberg, 'Persistent Internal Polarization,' Physical Review, vol. 97, pp. 1596-1610, 1955. [20] J. R. Freeman, et al., 'Persistent Internal Polarization,' Reviews of Modern Physics, vol. 33, pp. 553-573, 1961. [21] B. Gross, et al., 'Charge buildup in electron irradiated dielectrics,' Journal of Applied Physics, vol. 44, pp. 2459-2463, 1973. [22] G. M. Sessler and J. E. West, 'Electrets formed by low-energy electron injection,' Journal of Electrostatics, vol. 1, pp. 111-123, 1975. [23] G. M. Sessler, 'Physical principles of electrets.' vol. 33, G. Sessler, Ed., ed: Springer Berlin / Heidelberg, 1987, pp. 13-80. [24] G. M. Sessler and J. E. West, 'Self-Biased Condenser Microphone with High Capacitance,' The Journal of the Acoustical Society of America,, vol. 34, p. 1787, 1962. [25] H. Kawai, 'The Piezoelectricity of Poly (vinylidene Fluoride),' Japanese Journal of Applied Physics, vol. 8, pp. 975-976, 1969. [26] J. Lowell and A. C. Rose-Innes, 'Contact electrification,' Advances in Physics, vol. 29, pp. 947-1023, 1980/12/01 1980. [27] L. S. McCarty and G. M. Whitesides, 'Electrostatic Charging Due to Separation of Ions at Interfaces: Contact Electrification of Ionic Electrets,' Angewandte Chemie International Edition, vol. 47, pp. 2188-2207, 2008. [28] C. G. Camara, et al., 'Correlation between nanosecond X-ray flashes and stick-slip friction in peeling tape,' Nature, vol. 455, pp. 1089-1092, 2008. [29] M. Eguchi, 'On dielectric polarisation,' Proceedings of the Physico-Mathematical Society of Japan vol. 3, 1: 326–331, 1919. [30] J. Doshi and D. H. Reneker, 'Electrospinning process and applications of electrospun fibers,' Journal of Electrostatics, vol. 35, pp. 151-160, 1995. [31]http://www.centropede.com/UKSB2006/ePoster/images/background/ElectrospinFigure.j [32] K. Hagiwara, et al., 'Electret charging method based on X-ray photoionization for MEMS applications,' in Electrets (ISE), 2011 14th International Symposium on, 2011, pp. 13-14. [33] H. Junsei and W. Tatsuaki, 'Experimental investigation on the surface potential decays of dielectric materials with q -exponential function,' Journal of Physics: Conference Series, vol. 201, p. 012010, 2010. [34] M. Galikhanov and T. Luchikhina, 'Electret properties of blends of high-density polyethylene and polystyrene,' Russian Journal of Applied Chemistry, vol. 79, pp. 1153-1157, 2006. [35] N. Mohmeyer, et al., 'Additives to improve the electret properties of isotactic polypropylene,' Polymer, vol. 48, pp. 1612-1619, 2007. [36] N. Behrendt, et al., 'Charge storage behavior of isotropic and biaxially-oriented polypropylene films containing α- and β-nucleating agents,' Journal of Applied Polymer Science, vol. 99, pp. 650-658, 2006. [37] L. L. Cui, et al., 'The comparative studies of charge storage stabilities among three PP/porous PTFE/PP electret,' Journal of Electrostatics, vol. 67, pp. 412-416, 2009. [38] X. Zhongfu, et al., 'Electret properties for porous polytetrafluoroethylene (PTFE) film,' in Electrical Insulation and Dielectric Phenomena, 1997. IEEE 1997 Annual Report., Conference on, 1997, pp. 471-474 vol.2. [39] M. Wegener, et al., 'Porous polytetrafluoroethylene (PTFE) electret films: porosity and time dependent charging behavior of the free surface,' Journal of Porous Materials, vol. 14, pp. 111-118, 2007. [40] N. Behrendt, et al., 'Morphology and electret behaviour of microcellular high glass temperature films,' Applied Physics a-Materials Science & Processing, vol. 85, pp. 87-93, Oct 2006. [41] A. Navid, et al., 'Purified and porous poly(vinylidene fluoride-trifluoroethylene) thin films for pyroelectric infrared sensing and energy harvesting,' Smart Materials and Structures, vol. 19, p. 055006, 2010. [42] C.-Y. Kuo, et al., 'Fabrication of a high hydrophobic PVDF membrane via nonsolvent induced phase separation,' Desalination, vol. 233, pp. 40-47, 2008. [43] E. Fukada, 'History and recent progress in piezoelectric polymers,' Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on, vol. 47, pp. 1277-1290, 2000. [44] X. Qiu, 'Patterned piezo-, pyro-, and ferroelectricity of poled polymer electrets,' Journal of Applied Physics, vol. 108, p. 011101, 2010. [45] T. Furukawa, 'Ferroelectric properties of vinylidene fluoride copolymers,' Phase Transitions, vol. 18, pp. 143-211, 1989/08/01 1989. [46] J. B. Lando and W. W. Doll, 'The polymorphism of poly(vinylidene fluoride). I. The effect of head-to-head structure,' Journal of Macromolecular Science, Part B, vol. 2, pp. 205-218, 1968/06/01 1968. [47] G. Eberle, et al., 'Piezoelectric polymer electrets,' Dielectrics and Electrical Insulation, IEEE Transactions on, vol. 3, pp. 624-646, 1996. [48] J. F. Legrand, 'Structure and ferroelectric properties of P(VDF-TrFE) copolymers,' Ferroelectrics, vol. 91, pp. 303-317, 1989/03/01 1989. [49] W. Li, et al., 'Crystalline morphologies of P(VDF-TrFE) (70/30) copolymer films above melting point,' Applied Surface Science, vol. 254, pp. 7321-7325, 2008. [50] B. Mengjun, et al., 'Effects of annealing conditions on ferroelectric nanomesa self-assembly,' Journal of Physics: Condensed Matter, vol. 18, p. 7383, 2006. [51] A. J. Lovinger, 'Polymorphic transformations in ferroelectric copolymers of vinylidene fluoride induced by electron irradiation,' Macromolecules, vol. 18, pp. 910-918, 1985. [52] G. S. Neugschwandtner, et al., 'Piezo- and pyroelectricity of a polymer-foam space-charge electret,' Journal of Applied Physics, vol. 89, pp. 4503-4511, Apr 15 2001. [53] J. Hillenbrand and G. M. Sessler, 'Piezoelectric properties of polypropylene/air and poly(vinylidene fluoride)/air composites,' in Electrical Insulation and Dielectric Phenomena, 2000 Annual Report Conference on, 2000, pp. 161-165 vol.1. [54] X. Qiu, et al., 'Barrier discharges in cellular polypropylene ferroelectrets: How do they influence the electromechanical properties?,' Journal of Applied Physics, vol. 101, p. 104112, 2007. [55] R. Gerhard-Multhaupt, et al., 'Porous PTFE space-charge electrets for piezoelectric applications,' Dielectrics and Electrical Insulation, IEEE Transactions on, vol. 7, pp. 480-488, 2000. [56] Z. Hu and H. von Seggern, 'Charging mechanism of fibrous PTFE films,' in Electrets, 2005. ISE-12. 2005 12th International Symposium on, 2005, pp. 31-34. [57] Z. Hu and H. v. Seggern, 'Breakdown-induced polarization buildup in porous fluoropolymer sandwiches: a thermally stable piezoelectret,' Journal of Applied Physics, vol. 99, p. 024102, 2006. [58] J. Huang, et al., 'Piezoelectrets from laminated sandwiches of porous polytetrafluoroethylene films and nonporous fluoroethylenepropylene films,' Journal of Applied Physics, vol. 103, p. 084111, 2008. [59] J. M. M. a. J. D. Craggs, Electrical Breakdown of Gases: Oxford:Oxford University Press, 1953. [60] W. Grassi and D. Testi, 'Induction of waves on a horizontal water film by an impinging corona wind,' Dielectrics and Electrical Insulation, IEEE Transactions on, vol. 16, pp. 377-385, 2009. [61] M. Abdel-Salam, et al., 'Electric fields and corona currents in needle-to-meshed plate gaps,' Journal of Physics D: Applied Physics, vol. 40, p. 3363, 2007. [62] J. Hillenbrand and G. M. Sessler, 'Piezoelectricity in cellular electret films,' Dielectrics and Electrical Insulation, IEEE Transactions on, vol. 7, pp. 537-542, 2000. [63] H. von Seggern, et al., 'Theoretical considerations towards an optimal d33-coefficient of sandwiched piezoelectrets,' in Electrets (ISE), 2011 14th International Symposium on, 2011, pp. 19-20. [64] G. M. Sessler, et al., 'Electret properties of cycloolefin copolymers,' in Electrical Insulation and Dielectric Phenomena, 1997. IEEE 1997 Annual Report., Conference on, 1997, pp. 467-470 vol.2. [65] H.-C. Liao, et al., 'On the improvement for charging large-scale flexible electrostatic actuators,' in SPIE International Conference on Smart Structures/NDE,, San Diego, USA, 2011,vol 79790 pp. 79790D. [66] R. Gerhard-Multhaupt, 'Less can be more. Holes in polymers lead to a new paradigm of piezoelectric materials for electret transducers,' Dielectrics and Electrical Insulation, IEEE Transactions on, vol. 9, pp. 850-859, 2002. [67] N. Behrendt, et al., 'Morphology and electret behaviour of microcellular high glass temperature films,' Applied Physics A: Materials Science & Processing, vol. 85, pp. 87-93, 2006. [68] T. N. Pornsin-sirirak, et al., 'Titanium-alloy MEMS wing technology for a micro aerial vehicle application,' Sensors and Actuators A: Physical, vol. 89, pp. 95-103, 2001. [69] L. Hsi-wen and T. Yu-Chong, 'Parylene-based electret power generators,' Journal of Micromechanics and Microengineering, vol. 18, p. 104006, 2008. [70] L. Hsi-wen and T. Yu-Chong, 'Parylene-HT-based electret rotor generator,' in Micro Electro Mechanical Systems, 2008. MEMS 2008. IEEE 21st International Conference on, 2008, pp. 984-987. [71] C. Fischer, et al., 'About the microstructure of PCVD prepared crystal mats of statistical oligo-vinylidene-fluoride-trifluoroethylene in relation to other fluorinated polymers,' Journal of Polymer Science Part B: Polymer Physics, vol. 33, pp. 237-246, 1995. [72] A. J. Lovinger, et al., 'Crystallographic changes characterizing the Curie transition in three ferroelectric copolymers of vinylidene fluoride and trifluoroethylene: 1. As-crystallized samples,' Polymer, vol. 24, pp. 1225-1232, 1983. [73] S. Yu-Hao, et al., 'Injecting charges on large-area electret thin film by corona multi-pin discharge method,' in Electrical Insulation and Dielectric Phenomena (CEIDP), 2010 Annual Report Conference on, 2010, pp. 1-4. [74] M. Robert, et al., 'Fabrication of focused poly(vinylidene fluoride-trifluoroethylene) P(VDF-TrFE) copolymer 40--50 MHz ultrasound transducers on curved surfaces,' Journal of Applied Physics, vol. 96, pp. 252-256, 2004. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/63456 | - |
dc.description.abstract | 本論文以孔洞駐極體材料的性質與製程改善為研究主軸。對於應用於超薄型可撓駐極體揚聲器的研究,本文將對以移動式多針電暈放電系統對駐極體產生空間電荷注入的各項參數進行探討,希望能夠提升大面積超薄型駐極體揚聲器的製作效率,以利其大型化的應用趨勢。此外本文將使用聚對二甲苯的氣相沉積方式在多孔聚四氟乙烯高分子材料基材上沉積特定圖案,藉以針對多孔聚四氟乙烯在超薄型可撓式駐極體揚聲器使用上,如中等水平的儲電能力與容易塑性變形等缺點加以修飾,經實驗證實,本論文所提出的改進方法可有效提升駐極體揚聲器的聲壓值2dB,並保有其低頻頻寬,因此使改進後的孔洞駐極體材料可被應用為一寬頻揚聲器。另外對於可撓式類皮膚感測器與超音波換能器等的研發,本論文提出一種多孔聚四氟乙烯薄膜與氟化三氟聚乙烯複合材料的製法,相對於常見的化學溶液製程,可有效且簡單的進行孔洞氟化三氟聚乙烯薄膜的製作,透過其孔洞結構可使整體薄膜具相當的柔軟性與空氣有較好的聲阻匹配等,使改進後的孔洞駐極體材料可有效的作為空氣介質中的超音波換能器,此外也將孔洞結構所營造出的不對稱之電偶極與偶極駐極體材料內部所具有的電偶極結合,使其可產生更佳的壓電效應,所產生的壓電係數為結合前的四倍,可因此增加其作為感測器壓力方向的靈敏度。這個特性可以降低感測器的橫軸雜訊,整體提昇感測器的應用潛能。 | zh_TW |
dc.description.abstract | Improving the material property and manufacture process of porous electret were the main research targets in this thesis. With the application of ultra-thin flexible electret-speaker in mind, we identified the optimal parameters of using multiple-needle corona discharge system to enhance the production efficiency of large-area thin electret-speakers. The Parylene C was deposited in a particular pattern on the ePTFE substrate to modify the shortcomings of ePTFE such as medium charge storage stability and easy plastic deformation at low stress when adopted as ultra-thin flexible electret-speaker. The experimental results confirmed that the hybrid electret diaphragm can effectively increase the sound pressure level of electret loudspeaker 2dB and maintain the low-frequency response to form a wide bandwidth loudspeaker. In addition, we presented a novel method to form the porous structure of P(VDF-TrFE) by coating the solution of P(VDF-TrFE) onto the ePTFE substrate for developing flexible skin-like sensors and ultrasonic transducers. Comparing to the traditional chemical solution process, this newly developed method can easily produce porous structure of P(VDF-TrFE) to form large-area film. The ePTFE/P(VDF-TrFE) composite film is a suitable material for ultrasound transducer and film type sensor as its porous structure make the acoustic impedance of the film matched well with that of the air. It should be noted that porous ePTFE/P(VDF-TrFE) composite film is also softer, which makes it even more suitable for flexible ultrasonic or skin transducers. Finally, we combined the spatial dipole of porous electret and the dipole charge of dipole electret to enhance the piezoelectric effect and quadruple piezoelectric constant with an attempt to improve the sensor pressure directional sensitivity. This behavior can reduce the cross-axis sensitivity and thus enhance the potential of sensor applications. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T16:42:57Z (GMT). No. of bitstreams: 1 ntu-101-R99525039-1.pdf: 4744364 bytes, checksum: b575a10d57548c3674c155d664dea4c7 (MD5) Previous issue date: 2012 | en |
dc.description.tableofcontents | 口試委員會審定書
誌謝 I 中文摘要 II ABSTRACT III 目錄 IV 圖目錄 VI 表目錄 X 第一章 緒論 1 1.1 前言 1 1.2 研究背景 2 1.3 研究動機 9 1.4 論文架構 10 第二章 駐極體材料 11 2.1 駐極體材料簡介 11 2.2 駐極體的研究背景與分類 13 2.3 極化方法與電荷儲存曲線 20 2.3.1 極化方法 20 2.3.2 儲電曲線與儲電流失 24 2.4 孔洞駐極體極其製法 25 2.5 高分子駐極體材料之壓電特性 30 2.5.1 偶極駐極體材料 30 2.5.2 孔洞偶極駐極體 35 2.6 壓電、焦電與鐵電效應之介紹 39 第三章 工作原理 41 3.1 電暈放電原理 41 3.2 靜電式揚聲器驅動力推導 45 3.3 壓電係數d33 49 第四章 研究方法與實驗架設 54 4.1 多針移動式放電 54 4.1.1 前言 54 4.1.2 實驗設置 54 4.1.3 研究方法 58 4.2 靜電式駐極體揚聲器單體區域強化 60 4.2.1 前言 60 4.2.2 實驗設置 61 4.2.3 研究方法 66 4.3 多孔複合式駐極體薄膜 68 4.3.1 前言 68 4.3.2 實驗設置 69 4.3.3 研究方法 71 第五章 實驗結果與討論 73 5.1 多針移動式放電 73 5.2 駐極體單體區域強化實驗與討論 76 5.3 多孔複合駐極體薄膜 79 第六章 結論與未來展望 89 6.1 結論 89 6.2 未來展望 90 參考文獻……………………………………………………………………………….91 | |
dc.language.iso | zh-TW | |
dc.title | 提升孔洞駐極體材料致動與感測特性之研究 | zh_TW |
dc.title | Research and Development on Enhancing Porous Electret Sensing and Actuating Characteristics | en |
dc.type | Thesis | |
dc.date.schoolyear | 100-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 謝志文,林致廷,謝宗霖,吳文中 | |
dc.subject.keyword | 孔洞駐極體,超薄型可撓駐極體揚聲器,壓電,多孔聚四氟乙烯, | zh_TW |
dc.subject.keyword | porous electret,ultra-thin flexible electret-speaker,piezoelectric,ePTFE, | en |
dc.relation.page | 96 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2012-08-23 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 工程科學及海洋工程學研究所 | zh_TW |
顯示於系所單位: | 工程科學及海洋工程學系 |
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