Analysis and Performance Verification of One-Dimensional Nano-glass Structures Possessing Both Anti-reflective & Hydrophobic-Hydrophilic Properties
Date Issued
2007
Date
2007
Author(s)
Chang, Te-Wei
DOI
en-US
Abstract
After a series of research, feasibility of using periodic gradient nano-structured surface to integrate both the anti-reflection and the hydrophobic properties was proved both theoretically and experimentally. Up to this point, the underlying reason for these properties on transparent material is not completely clear even though most of the significant applications of this design are based on transparent materials, which includes package of solar cells and outdoor display panel, etc. Design and fabrication of one-dimensional nano-structures on glass substrate was thus adopted at the main platform to pursue basic understandings.
Rigorous coupled-wave analysis (RCWA) and numerical computation were applied here to design the desired structure for anti-reflection and hydrophobic-hydrophilic properties respectively. Then definition and transferring of pattern are carried out by electron beam lithography and reactive ion etching (RIE) method respectively. After experimental confirmations, the newly designed structure was found to possess both anti-reflection and hydrophobic-hydrophilic properties.
Besides that, some interesting but not clearly understood phenomena of wetability including heterogeneous effect, anisotropic effect and localized hydrophobic state have been found, analyzed and verified. According to these discussions contact angle and spreading property of liquid can be affected by geometry of surface structures. This idea may have great potential in droplet controlling of inkjet printing technique in flexible electronics in the future.
Subjects
親疏水
抗反射
蓮花效應
奈米結構
電子束微影製程
液滴控制
Anti-reflection
Super-hydrophobic
nano-structure
Lotus effect
electron beam lithography
droplet control
Type
thesis
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