Photocontrol of selective light reflection by oblique helicoidal cholesteric

Kamal Thapa; Olena S. Iadlovska; Hari Krishna Bisoyi; Daniel A. Paterson; John M.D. Storey; Corrie T. Imrie; Quan Li; Sergij V. Shiyanovskii; Oleg D. Lavrentovich

doi:10.1117/12.2592765

Photocontrol of selective light reflection by oblique helicoidal cholesteric

Kamal Thapa, Olena S. Iadlovska, Hari Krishna Bisoyi, Daniel A. Paterson, John M.D. Storey, Corrie T. Imrie, Quan Li, Sergij V. Shiyanovskii, Oleg D. Lavrentovich^*

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

1 Citation (Scopus)

Abstract

An oblique helicoidal cholesteric ChOH represents a unique optical material with a pitch that can be tuned by an electric or magnetic field in a broad range from sub micrometers to micrometers. In this work, we demonstrate that the oblique helicoidal cholesteric doped with azoxybenzene molecules and stabilized by an electric field could also be tuned by light irradiation. At a fixed voltage, UV irradiation causes a redshift of the reflection peak by more than 200 nm. The demonstrated effect has the potential for applications such as smart windows, sensors, tunable lasers, and filters.

Original language	English
Title of host publication	Liquid Crystals XXV
Editors	Iam Choon Khoo
Publisher	SPIE
Number of pages	8
ISBN (Electronic)	9781510644526
DOIs	https://doi.org/10.1117/12.2592765
Publication status	Published - 3 Aug 2021
Event	Liquid Crystals XXV 2021 - San Diego, United States Duration: 1 Aug 2021 → 5 Aug 2021

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	11807
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Liquid Crystals XXV 2021
Country/Territory	United States
City	San Diego
Period	1/08/21 → 5/08/21

Bibliographical note

Funding Information:
The work was supported by the National Science Foundation grant ECCS-1906104.

Keywords

Azoxybenzene derivatives
Electric field tuning of selective reflection
Hybrid surface anchoring
Infrared
Oblique helicoidal cholesteric
Photo tuning of selective reflection
Photoisomerization
Selective reflection in visible
Ultraviolet

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Cite this

Thapa, K., Iadlovska, O. S., Bisoyi, H. K., Paterson, D. A., Storey, J. M. D., Imrie, C. T., Li, Q., Shiyanovskii, S. V., & Lavrentovich, O. D. (2021). Photocontrol of selective light reflection by oblique helicoidal cholesteric. In I. C. Khoo (Ed.), Liquid Crystals XXV Article 118070X (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11807). SPIE. https://doi.org/10.1117/12.2592765

Photocontrol of selective light reflection by oblique helicoidal cholesteric. / Thapa, Kamal; Iadlovska, Olena S.; Bisoyi, Hari Krishna et al.
Liquid Crystals XXV. ed. / Iam Choon Khoo. SPIE, 2021. 118070X (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11807).

Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

Thapa, K, Iadlovska, OS, Bisoyi, HK, Paterson, DA, Storey, JMD , Imrie, CT, Li, Q, Shiyanovskii, SV & Lavrentovich, OD 2021, Photocontrol of selective light reflection by oblique helicoidal cholesteric. in IC Khoo (ed.), Liquid Crystals XXV., 118070X, Proceedings of SPIE - The International Society for Optical Engineering, vol. 11807, SPIE, Liquid Crystals XXV 2021, San Diego, United States, 1/08/21. https://doi.org/10.1117/12.2592765

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title = "Photocontrol of selective light reflection by oblique helicoidal cholesteric",

abstract = "An oblique helicoidal cholesteric ChOH represents a unique optical material with a pitch that can be tuned by an electric or magnetic field in a broad range from sub micrometers to micrometers. In this work, we demonstrate that the oblique helicoidal cholesteric doped with azoxybenzene molecules and stabilized by an electric field could also be tuned by light irradiation. At a fixed voltage, UV irradiation causes a redshift of the reflection peak by more than 200 nm. The demonstrated effect has the potential for applications such as smart windows, sensors, tunable lasers, and filters.",

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doi = "10.1117/12.2592765",

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AU - Iadlovska, Olena S.

AU - Bisoyi, Hari Krishna

AU - Paterson, Daniel A.

AU - Storey, John M.D.

AU - Imrie, Corrie T.

AU - Li, Quan

AU - Shiyanovskii, Sergij V.

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AB - An oblique helicoidal cholesteric ChOH represents a unique optical material with a pitch that can be tuned by an electric or magnetic field in a broad range from sub micrometers to micrometers. In this work, we demonstrate that the oblique helicoidal cholesteric doped with azoxybenzene molecules and stabilized by an electric field could also be tuned by light irradiation. At a fixed voltage, UV irradiation causes a redshift of the reflection peak by more than 200 nm. The demonstrated effect has the potential for applications such as smart windows, sensors, tunable lasers, and filters.

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KW - Hybrid surface anchoring

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KW - Photoisomerization

KW - Selective reflection in visible

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BT - Liquid Crystals XXV

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Photocontrol of selective light reflection by oblique helicoidal cholesteric

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Keywords

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