Photopolymerized self-assembly microlens arrays based on phase separation

In the past decades, there has been much effort in developing and improving new techniques for the production of microlens arrays. Here a low-temperature self-assembly method using phase separation is demonstrated for the first time for the fabrication of polymer microlens arrays. In this paper, we...

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Bibliographic Details
Published in:Soft matter 2011-01, Vol.7 (6), p.2812-2816
Main Authors: Huang, Li-Chen, Lin, Tzu-Chieh, Huang, Chiu-Chang, Chao, Chih-Yu
Format: Article
Language:English
Subjects:
Arrays
Blends
Liquid crystals
Phase separation
Polymer blends
Scanning
Self assembly
White light interferometry
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Summary:In the past decades, there has been much effort in developing and improving new techniques for the production of microlens arrays. Here a low-temperature self-assembly method using phase separation is demonstrated for the first time for the fabrication of polymer microlens arrays. In this paper, we present a simple method for producing microlens arrays based on liquid crystal/photopolymer blends via phase separation. The morphology of the microlens arrays has been measured by SEM, AFM and scanning white light interferometry. Our results show that the microlens arrays obtained from our experiments have a comparable light-gathering capability and can be applied in optical systems. We demonstrate that self-organized polymer lenses, induced from liquid crystal/polymer blends via phase separation followed by a photopolymerization process, solidify into the curvature shape of microlenses.
ISSN:1744-683X
1744-6848
DOI:10.1039/c0sm01013h