Tunable reflectance of an inverse opal-chiral nematic liquid crystal multilayer device by electric- or thermal-control

Yuxian Zhang; Weidong Zhao; Jiahui Wen; Jinming Li; Zhou Yang; Dong Wang; Hui Cao; Maohua Quan

doi:10.1039/c7cp01634d

Tunable reflectance of an inverse opal-chiral nematic liquid crystal multilayer device by electric- or thermal-control

Yuxian Zhang, Weidong Zhao, Jiahui Wen, Jinming Li, Zhou Yang^*, Dong Wang, Hui Cao, Maohua Quan

^*Corresponding author for this work

University of Science and Technology Beijing

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

A new type of electric- or thermal-responsive multilayer device composed of SiO₂ bilayer inverse opal (IOP) and chiral nematic liquid crystals (N∗LCs) was developed. Bilayer IOP was fabricated by layer-by-layer assembly of polystyrene (PS) spheres with two different sizes and showed a reflectance in an extended range of the near-infrared region. Furthermore, the electrically or thermally tunable reflectance of the bilayer-IOP-N∗LC device was investigated. The device exhibited the photonic bandgap (PBG) of the N∗LC-IOP composite structure with the application of an electric field (voltage-on), while it presented the reflectance of N∗LCs without an electric field (voltage-off) and the electrically-responsive behaviour could be reversibly switched. Besides, the device exhibited a gradient redshift of reflectance as temperature increased below the clearing point (T_C) while it showed the PBG of the N∗LC-IOP composite structure when the temperature was above T_C.

Original language	English
Pages (from-to)	12425-12430
Number of pages	6
Journal	Physical Chemistry Chemical Physics
Volume	19
Issue number	19
DOIs	https://doi.org/10.1039/c7cp01634d
Publication status	Published - 2017
Externally published	Yes

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title = "Tunable reflectance of an inverse opal-chiral nematic liquid crystal multilayer device by electric- or thermal-control",

abstract = "A new type of electric- or thermal-responsive multilayer device composed of SiO2 bilayer inverse opal (IOP) and chiral nematic liquid crystals (N∗LCs) was developed. Bilayer IOP was fabricated by layer-by-layer assembly of polystyrene (PS) spheres with two different sizes and showed a reflectance in an extended range of the near-infrared region. Furthermore, the electrically or thermally tunable reflectance of the bilayer-IOP-N∗LC device was investigated. The device exhibited the photonic bandgap (PBG) of the N∗LC-IOP composite structure with the application of an electric field (voltage-on), while it presented the reflectance of N∗LCs without an electric field (voltage-off) and the electrically-responsive behaviour could be reversibly switched. Besides, the device exhibited a gradient redshift of reflectance as temperature increased below the clearing point (TC) while it showed the PBG of the N∗LC-IOP composite structure when the temperature was above TC.",

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T1 - Tunable reflectance of an inverse opal-chiral nematic liquid crystal multilayer device by electric- or thermal-control

AU - Zhang, Yuxian

AU - Zhao, Weidong

AU - Wen, Jiahui

AU - Li, Jinming

AU - Yang, Zhou

AU - Wang, Dong

AU - Cao, Hui

AU - Quan, Maohua

PY - 2017

Y1 - 2017

N2 - A new type of electric- or thermal-responsive multilayer device composed of SiO2 bilayer inverse opal (IOP) and chiral nematic liquid crystals (N∗LCs) was developed. Bilayer IOP was fabricated by layer-by-layer assembly of polystyrene (PS) spheres with two different sizes and showed a reflectance in an extended range of the near-infrared region. Furthermore, the electrically or thermally tunable reflectance of the bilayer-IOP-N∗LC device was investigated. The device exhibited the photonic bandgap (PBG) of the N∗LC-IOP composite structure with the application of an electric field (voltage-on), while it presented the reflectance of N∗LCs without an electric field (voltage-off) and the electrically-responsive behaviour could be reversibly switched. Besides, the device exhibited a gradient redshift of reflectance as temperature increased below the clearing point (TC) while it showed the PBG of the N∗LC-IOP composite structure when the temperature was above TC.

AB - A new type of electric- or thermal-responsive multilayer device composed of SiO2 bilayer inverse opal (IOP) and chiral nematic liquid crystals (N∗LCs) was developed. Bilayer IOP was fabricated by layer-by-layer assembly of polystyrene (PS) spheres with two different sizes and showed a reflectance in an extended range of the near-infrared region. Furthermore, the electrically or thermally tunable reflectance of the bilayer-IOP-N∗LC device was investigated. The device exhibited the photonic bandgap (PBG) of the N∗LC-IOP composite structure with the application of an electric field (voltage-on), while it presented the reflectance of N∗LCs without an electric field (voltage-off) and the electrically-responsive behaviour could be reversibly switched. Besides, the device exhibited a gradient redshift of reflectance as temperature increased below the clearing point (TC) while it showed the PBG of the N∗LC-IOP composite structure when the temperature was above TC.

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SN - 1463-9076

VL - 19

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EP - 12430

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 19

ER -

Tunable reflectance of an inverse opal-chiral nematic liquid crystal multilayer device by electric- or thermal-control

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