Bistable cholesteric textures in chiral azobenzene-doped liquid crystals

Ko Ting Cheng; Andy Ying Guey Fuh; Zong Han Wu; Cheng Kai Liu; Yuan Di Chen

doi:10.1109/AM-FPD.2014.6867113

Bistable cholesteric textures in chiral azobenzene-doped liquid crystals

Ko Ting Cheng, Andy Ying Guey Fuh, Zong Han Wu, Cheng Kai Liu, Yuan Di Chen

Department of Optics and Photonics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Bistable cholesteric textures (i.e., planar and focal conic textures) in chiral azobenzene-doped liquid crystals (LCs) is demonstrated. Chiral azobenzene is a chiral dopant with optically tuned helical twisting power that results from the photo-isomerization between trans- and cis-isomers via exposure to UV or visible light. The pitch length of the material can be optically and repeatedly elongated and shortened. With regard to free energy, LCs tend to be stable at planar (focal conic) textures when pitch length is elongated (shortened) by exposure to UV (visible) light. Thus, direct optical switchable LC displays are investigated.

Original language	English
Title of host publication	Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices
Subtitle of host publication	TFT Technologies and FPD Materials
Publisher	IEEE Computer Society
Pages	29-32
Number of pages	4
ISBN (Print)	9784863483958
DOIs	https://doi.org/10.1109/AM-FPD.2014.6867113
State	Published - 2014
Event	21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2014 - Kyoto, Japan Duration: 2 Jul 2014 → 4 Jul 2014

Publication series

Name	Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials

Conference

Conference	21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2014
Country/Territory	Japan
City	Kyoto
Period	2/07/14 → 4/07/14

Access to Document

10.1109/AM-FPD.2014.6867113

Cite this

Cheng, K. T., Fuh, A. Y. G., Wu, Z. H., Liu, C. K., & Chen, Y. D. (2014). Bistable cholesteric textures in chiral azobenzene-doped liquid crystals. In Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials (pp. 29-32). Article 6867113 (Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials). IEEE Computer Society. https://doi.org/10.1109/AM-FPD.2014.6867113

Cheng, Ko Ting ; Fuh, Andy Ying Guey ; Wu, Zong Han et al. / Bistable cholesteric textures in chiral azobenzene-doped liquid crystals. Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials. IEEE Computer Society, 2014. pp. 29-32 (Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials).

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title = "Bistable cholesteric textures in chiral azobenzene-doped liquid crystals",

abstract = "Bistable cholesteric textures (i.e., planar and focal conic textures) in chiral azobenzene-doped liquid crystals (LCs) is demonstrated. Chiral azobenzene is a chiral dopant with optically tuned helical twisting power that results from the photo-isomerization between trans- and cis-isomers via exposure to UV or visible light. The pitch length of the material can be optically and repeatedly elongated and shortened. With regard to free energy, LCs tend to be stable at planar (focal conic) textures when pitch length is elongated (shortened) by exposure to UV (visible) light. Thus, direct optical switchable LC displays are investigated.",

author = "Cheng, {Ko Ting} and Fuh, {Andy Ying Guey} and Wu, {Zong Han} and Liu, {Cheng Kai} and Chen, {Yuan Di}",

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isbn = "9784863483958",

series = "Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials",

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pages = "29--32",

booktitle = "Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices",

note = "21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2014 ; Conference date: 02-07-2014 Through 04-07-2014",

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Cheng, KT, Fuh, AYG, Wu, ZH, Liu, CK & Chen, YD 2014, Bistable cholesteric textures in chiral azobenzene-doped liquid crystals. in Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials., 6867113, Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, IEEE Computer Society, pp. 29-32, 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2014, Kyoto, Japan, 2/07/14. https://doi.org/10.1109/AM-FPD.2014.6867113

Bistable cholesteric textures in chiral azobenzene-doped liquid crystals. / Cheng, Ko Ting; Fuh, Andy Ying Guey; Wu, Zong Han et al.
Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials. IEEE Computer Society, 2014. p. 29-32 6867113 (Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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PY - 2014

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N2 - Bistable cholesteric textures (i.e., planar and focal conic textures) in chiral azobenzene-doped liquid crystals (LCs) is demonstrated. Chiral azobenzene is a chiral dopant with optically tuned helical twisting power that results from the photo-isomerization between trans- and cis-isomers via exposure to UV or visible light. The pitch length of the material can be optically and repeatedly elongated and shortened. With regard to free energy, LCs tend to be stable at planar (focal conic) textures when pitch length is elongated (shortened) by exposure to UV (visible) light. Thus, direct optical switchable LC displays are investigated.

AB - Bistable cholesteric textures (i.e., planar and focal conic textures) in chiral azobenzene-doped liquid crystals (LCs) is demonstrated. Chiral azobenzene is a chiral dopant with optically tuned helical twisting power that results from the photo-isomerization between trans- and cis-isomers via exposure to UV or visible light. The pitch length of the material can be optically and repeatedly elongated and shortened. With regard to free energy, LCs tend to be stable at planar (focal conic) textures when pitch length is elongated (shortened) by exposure to UV (visible) light. Thus, direct optical switchable LC displays are investigated.

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Cheng KT, Fuh AYG, Wu ZH, Liu CK, Chen YD. Bistable cholesteric textures in chiral azobenzene-doped liquid crystals. In Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials. IEEE Computer Society. 2014. p. 29-32. 6867113. (Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials). doi: 10.1109/AM-FPD.2014.6867113

Bistable cholesteric textures in chiral azobenzene-doped liquid crystals

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