Self-Organization of Microlens Arrays Caused by the Spin-Coating-Assisted Hydrophobic Effect

A simple, low-cost, low-temperature, and shape-controllable approach has been demonstrated to fabricate polymer microlens arrays (MLAs). By using microcontact printing of the self-assembled monolayers and then spin coating, the microlenses were able to organize themselves on the patterned glass subs...

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Bibliographic Details
Published in:IEEE photonics technology letters 2006-12, Vol.18 (23), p.2454-2456
Main Authors: Chen, Fang-Chung, Huang, Wen-Kuei, Ko, Chu-Jung
Format: Article
Language:English
Subjects:
Arrays
Coatings
Etching
Fabrication
Glass
Hydrophobic and hydrophilic
Laser ablation
Laser modes
Lenses
microcontact printing
microlens array (MLA)
Microlenses
Microoptics
Optical measurement
Photonics
Prepolymers
self-assembled monolayers (SAMs)
Self-assembly
Shape control
Soft lithography
Spin coating
surface energy
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Summary:A simple, low-cost, low-temperature, and shape-controllable approach has been demonstrated to fabricate polymer microlens arrays (MLAs). By using microcontact printing of the self-assembled monolayers and then spin coating, the microlenses were able to organize themselves on the patterned glass substrate. High-quality MLAs made of NOA65 prepolymer with lens-diameters of 50, 75, and 100 mum have been fabricated by this method. Lens shapes can be controlled by changing the spin rates of the prepolymer coating. Optical measurements have revealed an excellent light-collecting capability from the fabricated MLAs. It is anticipated that the technique will be ideally suited to low-cost and high-volume production
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2006.886975