Photoresponsive behavior of azotolane liquid crystals

Kunihiko Okano; Tomiki Ikeda

doi:10.1117/12.804146

Photoresponsive behavior of azotolane liquid crystals

Kunihiko Okano, Tomiki Ikeda

Department of Applied Chemistry

Research output: Contribution to journal › Conference article › peer-review

Abstract

In this study, we irradiated homogeneously aligned films of an azotolane liquid-crystalline polymer with a single femtosecond (fs) laser pulse. Upon irradiation of the single pulse, the change in Δ n was induced by destruction of due to destroy the homogeneous alignment of the azotolane moieties was induced. The estimated value of the change in Δ n was >0.2, and the response time was about 400 ns. When the experiment temperature was below glass transition temperature, the change in alignment induced by the pulsed irradiation was preserved without a thermal relaxation. On the other hand, the changed alignment completely recovered to the initial state with an increase in temperature.

Original language	English
Article number	723209
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	7232
DOIs	https://doi.org/10.1117/12.804146
Publication status	Published - 2009 Apr 6
Event	Emerging Liquid Crystal Technologies IV - San Jose, CA, United States Duration: 2009 Jan 25 → 2009 Jan 28

Keywords

Azotolane
Birefringence
Liquid crystalline polymer

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.804146

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title = "Photoresponsive behavior of azotolane liquid crystals",

abstract = "In this study, we irradiated homogeneously aligned films of an azotolane liquid-crystalline polymer with a single femtosecond (fs) laser pulse. Upon irradiation of the single pulse, the change in Δ n was induced by destruction of due to destroy the homogeneous alignment of the azotolane moieties was induced. The estimated value of the change in Δ n was >0.2, and the response time was about 400 ns. When the experiment temperature was below glass transition temperature, the change in alignment induced by the pulsed irradiation was preserved without a thermal relaxation. On the other hand, the changed alignment completely recovered to the initial state with an increase in temperature.",

keywords = "Azotolane, Birefringence, Liquid crystalline polymer",

author = "Kunihiko Okano and Tomiki Ikeda",

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language = "English",

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journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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T1 - Photoresponsive behavior of azotolane liquid crystals

AU - Okano, Kunihiko

AU - Ikeda, Tomiki

PY - 2009/4/6

Y1 - 2009/4/6

N2 - In this study, we irradiated homogeneously aligned films of an azotolane liquid-crystalline polymer with a single femtosecond (fs) laser pulse. Upon irradiation of the single pulse, the change in Δ n was induced by destruction of due to destroy the homogeneous alignment of the azotolane moieties was induced. The estimated value of the change in Δ n was >0.2, and the response time was about 400 ns. When the experiment temperature was below glass transition temperature, the change in alignment induced by the pulsed irradiation was preserved without a thermal relaxation. On the other hand, the changed alignment completely recovered to the initial state with an increase in temperature.

AB - In this study, we irradiated homogeneously aligned films of an azotolane liquid-crystalline polymer with a single femtosecond (fs) laser pulse. Upon irradiation of the single pulse, the change in Δ n was induced by destruction of due to destroy the homogeneous alignment of the azotolane moieties was induced. The estimated value of the change in Δ n was >0.2, and the response time was about 400 ns. When the experiment temperature was below glass transition temperature, the change in alignment induced by the pulsed irradiation was preserved without a thermal relaxation. On the other hand, the changed alignment completely recovered to the initial state with an increase in temperature.

KW - Azotolane

KW - Birefringence

KW - Liquid crystalline polymer

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JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

M1 - 723209

T2 - Emerging Liquid Crystal Technologies IV

Y2 - 25 January 2009 through 28 January 2009

ER -

Photoresponsive behavior of azotolane liquid crystals

Abstract

Keywords

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