Stable azodye photo-alignment layer for liquid crystal devices achieved by 'turning off' dye photosensitivity
| العنوان: | Stable azodye photo-alignment layer for liquid crystal devices achieved by 'turning off' dye photosensitivity |
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| المؤلفون: | Robert K. Reich, Valerie Finnemeyer, Harry R. Clark, Phillip J. Bos, Colin McGinty, Shaun Berry |
| المصدر: | Journal of Applied Physics. 122:205301 |
| بيانات النشر: | AIP Publishing, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | 010302 applied physics, Liquid crystal devices, Materials science, business.industry, Mesogen, General Physics and Astronomy, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Layer thickness, chemistry.chemical_compound, Monomer, chemistry, Photosensitivity, Liquid crystal, 0103 physical sciences, Optoelectronics, 0210 nano-technology, business, Dissolution, Layer (electronics) |
| الوصف: | We have previously proposed a low cost, versatile process for stabilizing azodye photo-alignment layers for liquid crystal devices by utilizing a surface localized reactive mesogen (RM) layer. The RM is applied by dissolving the monomer in a liquid crystal material prior to filling the cell. In this paper, we show the significant effect of azodye layer thickness on the long term stability of these alignment layers when exposed to polarized light. We demonstrate, surprisingly, that thin azodye layers (∼3 nm) provide improved stability over thicker (∼40 nm) layers. Using this process, we show cells which have been stable to exposure with polarized light through one month. Additionally, we demonstrate the use of a photo-alignment layer to align the liquid crystals that afterwards can be rendered insensitive to polarized light. This was accomplished by using the process described above with the additional step of eliminating the photosensitivity of the azodye layer through photo-bleaching; the result is an RM... |
| تدمد: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.4991865 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::40289642ec387fd544ddc3d170d1ff32 https://doi.org/10.1063/1.4991865 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........40289642ec387fd544ddc3d170d1ff32 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10897550 00218979 |
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| DOI: | 10.1063/1.4991865 |