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| ???org.dspace.app.webui.jsptag.ItemTag.dcfield??? | Value | Language |
|---|---|---|
| dc.contributor.advisor | 江宏仁(Hong-Ren Jiang) | |
| dc.contributor.author | Lung-Kuei Wu | en |
| dc.contributor.author | 吳龍魁 | zh_TW |
| dc.date.accessioned | 2021-06-17T00:10:49Z | - |
| dc.date.available | 2020-02-19 | |
| dc.date.copyright | 2020-02-19 | |
| dc.date.issued | 2020 | |
| dc.date.submitted | 2020-02-15 | |
| dc.identifier.citation | [1] E. Poggi and J.-F. Gohy, 'Janus particles: from synthesis to application,' Colloid and Polymer Science, vol. 295, no. 11, pp. 2083-2108, 2017.
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Gangwal, O. J. Cayre, M. Z. Bazant, and O. D. Velev, 'Induced-charge electrophoresis of metallodielectric particles,' Physical review letters, vol. 100, no. 5, p. 058302, 2008. [14] Y.-L. Chen and H.-R. Jiang, 'Electrorotation of a metallic coated Janus particle under AC electric fields,' Applied Physics Letters, vol. 109, no. 19, p. 191605, 2016. [15] L. Zhang and Y. Zhu, 'Dielectrophoresis of Janus particles under high frequency ac-electric fields,' Applied Physics Letters, vol. 96, no. 14, p. 141902, 2010. [16] P. A. Kralchevsky and N. D. Denkov, 'Capillary forces and structuring in layers of colloid particles,' Current opinion in colloid & interface science, vol. 6, no. 4, pp. 383-401, 2001. [17] A. Walther and A. H. Müller, 'Janus particles,' Soft Matter, vol. 4, no. 4, pp. 663-668, 2008. [18] T. Honegger, O. Lecarme, K. Berton, and D. Peyrade, 'Rotation speed control of Janus particles by dielectrophoresis in a microfluidic channel,' Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, vol. 28, no. 6, pp. C6I14-C6I19, 2010. [19] L. Hong, S. Jiang, and S. Granick, 'Simple method to produce Janus colloidal particles in large quantity,' Langmuir, vol. 22, no. 23, pp. 9495-9499, 2006. [20] Z. Nie, W. Li, M. Seo, S. Xu, and E. Kumacheva, 'Janus and ternary particles generated by microfluidic synthesis: design, synthesis, and self-assembly,' Journal of the American Chemical Society, vol. 128, no. 29, pp. 9408-9412, 2006. [21] K.-H. Roh, D. C. Martin, and J. Lahann, 'Biphasic Janus particles with nanoscale anisotropy,' Nature materials, vol. 4, no. 10, p. 759, 2005. [22] J. Chen, H. Zhang, X. Zheng, and H. Cui, 'Janus particle microshuttle: 1D directional self-propulsion modulated by AC electrical field,' AIP Advances, vol. 4, no. 3, p. 031325, 2014. [23] S. Gangwal, O. J. Cayre, and O. D. Velev, 'Dielectrophoretic assembly of metallodielectric Janus particles in AC electric fields,' Langmuir, vol. 24, no. 23, pp. 13312-13320, 2008. [24] S.-J. Park and M.-K. Seo, 'Intermolecular Force,' in Interface Science and Technology, vol. 18: Elsevier, 2011, pp. 1-57. [25] W. B. Russel, W. Russel, D. A. Saville, and W. R. Schowalter, Colloidal dispersions. Cambridge university press, 1991. [26] D. Hanaor, M. Michelazzi, C. Leonelli, and C. C. Sorrell, 'The effects of carboxylic acids on the aqueous dispersion and electrophoretic deposition of ZrO2,' Journal of the European Ceramic Society, vol. 32, no. 1, pp. 235-244, 2012. [27] D. C. Grahame, 'The electrical double layer and the theory of electrocapillarity,' Chemical reviews, vol. 41, no. 3, pp. 441-501, 1947. [28] T. M. Squires and M. Z. Bazant, 'Induced-charge electro-osmosis,' Journal of Fluid Mechanics, vol. 509, pp. 217-252, 2004. [29] Y. Ren et al., 'Induced-charge electroosmotic trapping of particles,' Lab on a chip, vol. 15, no. 10, pp. 2181-2191, 2015. [30] C. Peng, I. Lazo, S. V. Shiyanovskii, and O. D. Lavrentovich, 'Induced-charge electro-osmosis around metal and Janus spheres in water: Patterns of flow and breaking symmetries,' Physical Review E, vol. 90, no. 5, p. 051002, 2014. [31] H. Morgan and N. G. Green, AC electrokinetics. Research Studies Press, 2003. [32] M. P. Hughes, 'AC electrokinetics: applications for nanotechnology,' Nanotechnology, vol. 11, no. 2, p. 124, 2000. [33] D. Morganti, 'AC electrokinetic analysis of chemically modified microparticles,' University of Southampton, 2012. [34] I. Doh and Y.-H. Cho, 'A continuous cell separation chip using hydrodynamic dielectrophoresis (DEP) process,' Sensors and Actuators A: Physical, vol. 121, no. 1, pp. 59-65, 2005. [35] N. G. Green and H. Morgan, 'Dielectrophoresis of submicrometer latex spheres. 1. Experimental results,' The Journal of Physical Chemistry B, vol. 103, no. 1, pp. 41-50, 1999. [36] M.-T. Wei, J. Junio, and H. D. Ou-Yang, 'Direct measurements of the frequency-dependent dielectrophoresis force,' Biomicrofluidics, vol. 3, no. 1, p. 012003, 2009. [37] T. Honegger, K. Berton, E. Picard, and D. Peyrade, 'Determination of Clausius–Mossotti factors and surface capacitances for colloidal particles,' Applied Physics Letters, vol. 98, no. 18, p. 181906, 2011. [38] Y. K. Ren, D. Morganti, H. Y. Jiang, A. Ramos, and H. Morgan, 'Electrorotation of metallic microspheres,' Langmuir, vol. 27, no. 6, pp. 2128-2131, 2011. [39] P. García-Sánchez, Y. Ren, J. J. Arcenegui, H. Morgan, and A. Ramos, 'Alternating current electrokinetic properties of gold-coated microspheres,' Langmuir, vol. 28, no. 39, pp. 13861-13870, 2012. [40] C. Grosse and V. N. 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Ramos, 'Electrorotation of a metal sphere immersed in an electrolyte of finite debye length,' Physical Review E, vol. 92, no. 5, p. 052313, 2015. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/65739 | - |
| dc.description.abstract | 在近十幾年來，因Janus粒子特殊結構性的關係，使其在不同領域上受到諸多學者的注意，漸漸研究出許多不同的應用，其為利用電場來控制Janus粒子的運動以達到藥物輸送、自組裝或細胞分離的目的，而要達到Janus粒子控制的目的前，首先須先瞭解Janus粒子受到電場作用後，其極化機制對於粒子運動的影響，而從文獻上可知目前探討膠體粒子的極化特性的方法，主要以電旋轉或介電泳的技術來量測不同頻率下的膠體粒子（角）速度的差異，並透過改變粒子大小或是溶液導電度的變因，探討其因極化能力的改變而導致特徵頻率改變之原因。由於最初的膠體粒子極化機制並沒有考慮到溶液中固液介面形成的電雙層對極化的影響，因此在後來便有將電雙層因素考慮進邊界條件的膠體粒子極化機制的數學理論推導，但整體的極化過程目前還不是太明確，再加上後來的特殊結構的Janus粒子的極化特性所發現的不同於膠體粒子的極化能力且無法使用膠體粒子的極化理論來解釋，因此使得Janus粒子的極化特性變得更為複雜有趣。
在我們的論文中，我們會先利用模擬的方式來說明膠體粒子及Janus粒子在電旋轉下的極化特性且在不同頻率下對角速度影響及Janus粒子的特徵頻率放大且低頻再次反轉之現象，瞭解兩種粒子的極化機制後，我們將會設計多層的表面結構在Janus粒子的金屬側上，透過實驗的方式以電旋轉技術量測其頻譜，而我們發現了多層結構的Janus粒子其特徵頻率會再次放大且轉速會有下降之現象，為了瞭解其多層結構所影響的粒子極化能力，我們會再使用模擬的方法來輔助瞭解多層結構的Janus粒子其極化機制的改變原因，而從模擬結果上可以知道其極化能力的改變都與電雙層形成的快慢及完整性有關，即電雙層所產生的電偶極矩與粒子本身受到電場作用而感應出的電偶極矩彼此耦合後與電場之間的關係，因此透過本次論文的研究，我們提出了一個模擬的電雙層模型來清楚的解釋膠體粒子及Janus粒子在受到電場作用後的極化機制，接著使用實驗與模擬的方法探討及解釋表面多層的結構如何有效的改變Janus粒子的極化特性，隨著全盤的了解Janus粒子的極化機制及控制極化能力後，或許可以達到設計粒子極化能力之目的，在未來操控粒子的應用或是提供給感測器應用在針對表面結構探測的奈米機器人設計上之資訊。 | zh_TW |
| dc.description.abstract | Janus particle has attracted the attention in the different academic fields due to the special structure in last decades. Scientists reported that this special particle can be applied to the drug delivery, self-assembly and cell separation under electric field.
In order to achieve the purpose of controlling Janus particle, we must understand its polarization mechanism. The widely used methods of measuring the polarization characteristics of particles are Electrorotation(EROT) and Dielectrophoresis(DEP), which analyze the angular velocity of particles in many literatures. But the original polarization mechanism of colloidal particles did not take into account the effect of the electric double layer formed on the solid-liquid interface in solution. Although there are some mathematical theories take the electric double layer factor into the consideration, the entire polarization process is still not clear. Janus particles with specific structures are more complicated, so the polarization of colloidal particles from previous literatures can not well explain its polarization characteristics. In this study, we investigate the physical mechanism occurred in the process of electrorotation of colloidal particles and Janus particles by simulation. After analyzing the polarization mechanism of two kinds of particles, we design a multilayer structure which composed of silica and platinum on the metal coated side of the Janus particle and measure its frequency spectrum by electrorotation. We find that the characteristic frequency of Janus particles with multilayer structure will increase and the angular velocity will decrease. In order to verify our discovery, we investigate the polarization mechanism of the multilayer structure of Janus particles by numerical simulation method. We find that the polarization mechanism is related to the electric double layer by simulation results. Therefore, we report an electric double layer model through numerical method to clearly explain the polarization mechanism of colloidal particles and Janus particles. We use experimental method and numerical simulation to explore how the multilayer structure on the surface effectively changes the polarization characteristics of Janus particles. After studying the polarization mechanism of Janus particles, we may be possible to design the behavior of particle polarization. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-17T00:10:49Z (GMT). No. of bitstreams: 1 ntu-109-R06543060-1.pdf: 4070270 bytes, checksum: 41ecde2b9407439ed684c9b54bbac083 (MD5) Previous issue date: 2020 | 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 ix 第一章 緒論 1 1.1 前言 1 1.2 非對稱粒子 2 1.2.1 Janus粒子 2 1.2.2 Janus粒子製備 3 1.2.3 Janus粒子應用 6 1.3 膠體粒子之電動力學 8 1.3.1 膠體粒子 8 1.3.2 電雙層模型 8 1.3.3 德拜長度 (Debye length) 9 1.3.4 界達電位 (Zeta potential) 9 1.3.5 感應電荷電滲流模型 10 1.3.6 介電泳與電旋轉理論 13 1.3.7 介電粒子與金屬粒子的介電泳/電旋轉響應 18 1.4 非對稱粒子之電動力學 25 1.5 多層非對稱粒子之電動力學 26 1.6 實驗動機 28 第二章 實驗材料及儀器設備 29 2.1 濺鍍機 29 2.2 氧化銦錫玻璃 30 2.3 原子力顯微鏡 30 2.4 其他實驗器材 31 第三章 實驗方法與步驟 32 3.1 製備多層Janus粒子 32 3.1.1 單層二氧化矽粒子製備 32 3.1.2 白金濺鍍與粒子保存 33 3.1.3 表面化學修飾製備多層Janus粒子 34 3.2 實驗架設 36 3.2.1 電極製備及旋轉電場 36 3.3 粒子金屬和介電質厚度量測 37 3.3.1 量測Janus粒子沉積金屬和介電質厚度 37 第四章 數值模擬運算模型 40 4.1 數值模擬運算模組 40 4.2 統御方程式及邊界條件設定 40 4.3 旋轉電場模擬及網格設定 42 4.4 粒子所受扭矩之計算方法 45 4.5 其他相關參數設定 48 第五章 實驗結果與討論 49 5.1 數值模擬之電雙層模型驗證 49 5.2 數值模擬之(非)對稱粒子在旋轉電場下的運動機制探討 52 5.2.1 金屬粒子之電旋轉響應模擬 52 5.2.2 Janus粒子之電旋轉響應模擬 58 5.3 多層介電質/金屬結構對於Janus粒子之電旋轉響應 62 5.3.1 雙層結構之Janus粒子電旋轉響應 62 5.3.2 三層結構之Janus粒子電旋轉響應 67 第六章 結論 72 REFERENCE 73 | |
| dc.language.iso | zh-TW | |
| dc.subject | 非對稱粒子 | zh_TW |
| dc.subject | 多層結構 | zh_TW |
| dc.subject | 電動力學 | zh_TW |
| dc.subject | 電旋轉 | zh_TW |
| dc.subject | 介電泳 | zh_TW |
| dc.subject | COMSOL | zh_TW |
| dc.subject | Janus particle | en |
| dc.subject | multi-layer | en |
| dc.subject | electrokinetics | en |
| dc.subject | electrorotation | en |
| dc.subject | dielectrophoresis | en |
| dc.subject | COMSOL | en |
| dc.title | 多層的非對稱粒子在交流電場下的電旋轉研究 | zh_TW |
| dc.title | Electrorotation of Multi-Layer Janus Particles under AC Electric Field | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 108-1 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 李雨(U Lei),黃仲仁(Jung-Ren Huang) | |
| dc.subject.keyword | 非對稱粒子,多層結構,電動力學,電旋轉,介電泳,COMSOL, | zh_TW |
| dc.subject.keyword | Janus particle,multi-layer,electrokinetics,electrorotation,dielectrophoresis,COMSOL, | en |
| dc.relation.page | 75 | |
| dc.identifier.doi | 10.6342/NTU202000491 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2020-02-15 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 應用力學研究所 | zh_TW |
| Appears in Collections: | 應用力學研究所 | |
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