
Photoaligned chiral liquid crystal grating with hysteresis switching
- Author
- Inge Nys (UGent) , Brecht Berteloot and Kristiaan Neyts (UGent)
- Organization
- Project
- Abstract
- Metastable topological states are known to arise when chiral liquid crystal (CLC) is infiltrated in a geometry with strong confinement. This study demonstrates an alternative approach to obtain multistable states, by combining patterned surface anchoring with CLC in a less confined geometry. Long pitch CLC is introduced between two 1D periodically rotating anchoring patterns at the top and bottom substrate with perpendicular rotation direction. Voltage-induced switching is observed by polarizing optical microscopy and diffraction measurements. For some voltages two different stable topological states appear and electrical switching between these two states occurs via a hysteresis loop. The chirality in the LC material induces the formation of a new topological state at low voltages, which is not observed in nonchiral LC cells with the same anchoring configuration. Hysteresis switching between different optical states may find applications in low-power devices with internal memory.
- Keywords
- Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, chiral liquid crystals, hysteresis, periodic photoalignment, switchable, gratings, topological states, LASER
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-01GQF9JRM51TFT4B5NDD72W1J4
- MLA
- Nys, Inge, et al. “Photoaligned Chiral Liquid Crystal Grating with Hysteresis Switching.” ADVANCED OPTICAL MATERIALS, vol. 10, no. 23, 2022, doi:10.1002/adom.202201289.
- APA
- Nys, I., Berteloot, B., & Neyts, K. (2022). Photoaligned chiral liquid crystal grating with hysteresis switching. ADVANCED OPTICAL MATERIALS, 10(23). https://doi.org/10.1002/adom.202201289
- Chicago author-date
- Nys, Inge, Brecht Berteloot, and Kristiaan Neyts. 2022. “Photoaligned Chiral Liquid Crystal Grating with Hysteresis Switching.” ADVANCED OPTICAL MATERIALS 10 (23). https://doi.org/10.1002/adom.202201289.
- Chicago author-date (all authors)
- Nys, Inge, Brecht Berteloot, and Kristiaan Neyts. 2022. “Photoaligned Chiral Liquid Crystal Grating with Hysteresis Switching.” ADVANCED OPTICAL MATERIALS 10 (23). doi:10.1002/adom.202201289.
- Vancouver
- 1.Nys I, Berteloot B, Neyts K. Photoaligned chiral liquid crystal grating with hysteresis switching. ADVANCED OPTICAL MATERIALS. 2022;10(23).
- IEEE
- [1]I. Nys, B. Berteloot, and K. Neyts, “Photoaligned chiral liquid crystal grating with hysteresis switching,” ADVANCED OPTICAL MATERIALS, vol. 10, no. 23, 2022.
@article{01GQF9JRM51TFT4B5NDD72W1J4, abstract = {{Metastable topological states are known to arise when chiral liquid crystal (CLC) is infiltrated in a geometry with strong confinement. This study demonstrates an alternative approach to obtain multistable states, by combining patterned surface anchoring with CLC in a less confined geometry. Long pitch CLC is introduced between two 1D periodically rotating anchoring patterns at the top and bottom substrate with perpendicular rotation direction. Voltage-induced switching is observed by polarizing optical microscopy and diffraction measurements. For some voltages two different stable topological states appear and electrical switching between these two states occurs via a hysteresis loop. The chirality in the LC material induces the formation of a new topological state at low voltages, which is not observed in nonchiral LC cells with the same anchoring configuration. Hysteresis switching between different optical states may find applications in low-power devices with internal memory.}}, articleno = {{2201289}}, author = {{Nys, Inge and Berteloot, Brecht and Neyts, Kristiaan}}, issn = {{2195-1071}}, journal = {{ADVANCED OPTICAL MATERIALS}}, keywords = {{Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials,chiral liquid crystals,hysteresis,periodic photoalignment,switchable,gratings,topological states,LASER}}, language = {{eng}}, number = {{23}}, pages = {{11}}, title = {{Photoaligned chiral liquid crystal grating with hysteresis switching}}, url = {{http://doi.org/10.1002/adom.202201289}}, volume = {{10}}, year = {{2022}}, }
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