Photoalignment of nematic liquid crystal on polyamic‐acid‐based soluble polyimide with no side fragments |
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| Authors: | Seo‐Kyu Park Un‐Sung Jung Soon‐Bum Kwon Mihye Yi Taek Ahn Jeong‐Soo Kim Yuriy Kurioz Yuriy Reznikov |
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| Affiliation: | 1. Department of Polymer and Biomedical Engineering, Chungnam National University, Korea;2. School of Engineering, Hoseo University, Korea;3. Department of Polymer and Biomedical Engineering, Chungnam National University, Korea, and the School of Engineering, Hoseo University, Korea;4. Information & Electronics Polymer Research Center, Korea Research Institute of Chemical Technology, Korea;5. Institute of the Physics, Department of Crystals, National Academy of Science of Ukraine, Prospect Nauki 46, Kyiv 03068, Ukraine |
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| Abstract: | Abstract— The photoalignment of nematic LC on a layer of newly synthesized UV‐sensitive polyimide without side fragments is reported. The photoaligning polymer advantageously differs from other photoaligning materials because of its extremely low sticking effect and residual DC voltage. These parameters, as well as the UV and thermal stability of the alignment, are not worse than those of rubbed polyimides. At the same time, the new material possesses all the advantages of photoaligning polymers. |
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| Keywords: | Liquid crystals alignment photoalignment sticking effect |
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