DC 欄位 | 值 | 語言 |
dc.contributor | 陳炳煇 | zh-TW |
dc.contributor | 臺灣大學:機械工程學研究所 | zh-TW |
dc.contributor.author | 楊湧郎 | zh-TW |
dc.contributor.author | Yung-Lang, Yang | en |
dc.creator | 楊湧郎 | zh-TW |
dc.creator | Yung-Lang, Yang | en |
dc.date | 2009 | en |
dc.date.accessioned | 2010-06-30T09:28:31Z | - |
dc.date.accessioned | 2018-06-28T17:33:08Z | - |
dc.date.available | 2010-06-30T09:28:31Z | - |
dc.date.available | 2018-06-28T17:33:08Z | - |
dc.date.issued | 2009 | - |
dc.identifier.other | U0001-0307200914262000 | en |
dc.identifier.uri | http://ntur.lib.ntu.edu.tw//handle/246246/187169 | - |
dc.description.abstract | The present study employed a laser interference design to fabricate one- and two-dimensional periodical nanopatterns. Combining the conventional lithography, large areas of hierarchical structure can be achieved in simple processes.he pitch of nanopattern was dependent on both the incident wavelength and interference angle, and hence, different geometrical sizes of regular nanopatterns were easily fabricated by altering interference angle. The minimum feature size for nanopattern was 100 nm. Here, this study reported the variable wetting properties, including hydrophilicity, hydrophobicity and anisotropic behavior of water droplets, on different morphologies of nanopatterns with controlled dimensions. ccording to this study, one-dimensional nanowires displayed strongly anisotropic wetting behavior with feature size from 200 nm to 1500 nm. Moreover, the surfaces of nanowires were manipulated from hydrophilic to hydrophobic by coating a layer of HMDS. For two-dimensional nanopillar array, the contact angles on 2D nanopillars increased with decreasing feature sizes of nanopatterns. The contact angle up to 120? while feature size of nanopillars down to 200 nm, and the critical size for transition from hydrophobic to hydrophilic is 500 nm. As for hierarchical structures, they were successfully completed on the glass substrate, like the surfaces of lotus leaves. However, these hierarchical structures did not show the extreme wetting properties. Finally, this study supported that surfaces with wetting properties have the potential application in microfluidic devices. | en |
dc.description.tableofcontents | Table of Contentcknowledgement Ibstract IIomenclature IVable of Content VIist of Figures IXist of Tables XIIhapter 1 Introduction 1.1 Thesis Literature Review 1.1.1 Superhydrophobic surface 1.1.2 Anisotropic and Interlaced Patterns 2.2 Fabrication Processes for Wetting Properties 3.2.1 Laser Interference Lithography 4.3 Motivation and objectives 6hapter 2 Theory 12.1 Electromagnetic wave 12.1.1 Complex Representation of Light Waves 13.2 Two beams interference 14.2.1 Beam Division 15.3 Interference of Two Monochromatic Waves 15.3.1 Fringe Visibility 16.3.2 Coherence 17.3.3 Effect of Polarization Direction 18.4 Anti-reflective coatings 18.5 Theoretical models for surface wettability 20.5.1 Hydrophobic surface 21.5.2 Hydrophilic surface 22hapter 3 Experiment 29.1 Laser Interference System 29.1.1 The Optical layout of Interference System 29.1.2 Hardware Requirement 30.1.3 System stability 30.1.4 System Clear 31.2 Experimental Flow 31.2.1 Photolithography 31.2.2 Laser interference lithography 33.2.3 Multiple-Exposure Interference—Complex 2-D Patterns 34.3 Measurement Instruments 34hapter 4 Results and Discussion 46.1 Sample Characteristics 46.1.1 Single-Exposure Interference — Simple 1-D Wires 46.1.2 Multiple-Exposure Interference — Complex 2-D Patterns 47.1.3 Combinative Lithography — Composite Structure 48.2 Hydrophilic effect 49.2.1 Microarray 49.2.2 Nanoscale wire 50.2.3 Composite Structure 52.3 Hydrophobic Effect 52hapter 5 Conclusion 69eferences 71 | en |
dc.format.extent | 4084993 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language | en | en |
dc.language.iso | en_US | - |
dc.subject | 雷射干涉微影 | zh-TW |
dc.subject | 週期性奈米結構 | zh-TW |
dc.subject | 表面親疏水性 | zh-TW |
dc.subject | laser interference lithography | en |
dc.subject | periodical nanostructures | en |
dc.subject | surface wetability | en |
dc.title | 週期性微奈米結構於表面親疏水性之研究 | zh-TW |
dc.title | Study on surface wettability of periodical micro/nanostructures | en |
dc.type | thesis | en |
dc.identifier.uri.fulltext | http://ntur.lib.ntu.edu.tw/bitstream/246246/187169/1/ntu-98-R96522307-1.pdf | - |
item.fulltext | with fulltext | - |
item.openairetype | thesis | - |
item.languageiso639-1 | en_US | - |
item.openairecristype | http://purl.org/coar/resource_type/c_46ec | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
顯示於: | 機械工程學系
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