研究生: |
李哲賢 Li, Che-Hsien |
---|---|
論文名稱: |
奈米碳管矩陣結構之低電場調控表面張力 Low Electric Field Modulated Surface Tension of Aligned Carbon Nanotube Arrays |
指導教授: |
徐文光
Hsu, Wen-Kuang |
口試委員: |
洪毓玨
黃淑娟 |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 材料科學工程學系 Materials Science and Engineering |
論文出版年: | 2011 |
畢業學年度: | 99 |
語文別: | 中文 |
論文頁數: | 44 |
中文關鍵詞: | 奈米碳管 、電濕潤 、表面張力 |
外文關鍵詞: | nanotube, electro-wetting, surface tension |
相關次數: | 點閱:3 下載:0 |
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本論文分成兩個部分,第一部分利用疏水性的陣列奈米碳管作為電濕潤的固體表面,藉由施加平行電壓產生電雙層及電泳,造成固-氣間表面張力上升和固-液間表面張力下降,導致液滴與界面的接觸角下降,達到電濕潤的效果。
論文第二部分則是探討不同離子濃度對電濕潤的影響,藉著施加相同電壓時,不同離子濃度的情況下,液滴的接觸角會產生不同變化,因此,本節主要討論藉由離子的存在與否與濃度變化,來控制液體的電濕潤現象。
This thesis is divided into two parts. First, the field modulated surface tension of aligned carbon nanotubes (aligned-CNTs) is discussed and demonstrated. Electric fields are found capable of changing contact angle of liquid droplet on surfaces of aligned carbon nanotube arrays, and the surface tension is calculated according to the experimental data using the Owens-Wendt model and Young’s equations.
Second, we discuss the effect of different ion concentrations on electro-wetting. By applying the same voltage, the contact angle of droplet varies with different ion concentrations, and the relationship between droplet contact angle and ions is also discussed.
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