Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1785693 | Current Applied Physics | 2015 | 6 Pages |
Abstract
Polymer dispersed liquid crystal was synthesized by combining a UV curable polymer and a nematic liquid crystal. Optimized conditions for the optical properties of the PDLC were found to be the concentration ratio of LC and polymer at 7:3, UV curing time of 18 min, and the thickness less than 25 μm. In the case of the high LC concentration (â¥70%) sample, the amount of liquid crystal segregated in the polymerization process was enough to form a spherical shape of droplet, and the threshold driving voltage was reduced. The response time for the turn-on process was nearly independent of the concentration, while the turn-off process was almost proportional to the concentration. From microscopic image and UV-visible spectrum analysis, the relation between LC droplet morphology and optical properties were explained.
Related Topics
Physical Sciences and Engineering
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Condensed Matter Physics
Authors
Yura Kim, Dayeon Jung, Seyoon Jeong, Kwangyoon Kim, Woosuk Choi, Yongho Seo,