Responsive Photonic Liquid Crystalline Flakes Produced by Ultrasonication

Jeroen A.H.P. Sol; Lana Kessels; Marc del Pozo Puig; Michael G. Debije

doi:10.1002/adpr.202000115

Responsive Photonic Liquid Crystalline Flakes Produced by Ultrasonication

Jeroen A.H.P. Sol, Lana Kessels, Marc del Pozo Puig, Michael G. Debije (Corresponding author)

Stimuli-responsive Functional Materials & Devices

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

Abstract

Responsive materials that alter their color in response to environmental changes can be used as optical sensors. Chiral nematic liquid crystals are photonic materials that selectively reflect specific wavelengths of light and have been made environmentally responsive. In this work, we demonstrate the use of ultrasonication of responsive cholesteric liquid crystal network films to form structurally colored flakes that demonstrate color changes when moved from an aqueous to dry environment and back again, suggesting a scalable technique to form quantities of responsive particles that could conceivably be embedded in permeable hosts to allow the optical detection of humidity or certain chemical species.

Original language	English
Article number	2000115
Journal	Advanced Photonics Research
Volume	XX
Issue number	XX
DOIs	https://doi.org/10.1002/adpr.202000115
Publication status	Accepted/In press - 22 Dec 2020

Keywords

additive manufacturing
cholesteric flake
dopants
effect pigments
liquid crystals
polymer photonics
responsive

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title = "Responsive Photonic Liquid Crystalline Flakes Produced by Ultrasonication",

abstract = "Responsive materials that alter their color in response to environmental changes can be used as optical sensors. Chiral nematic liquid crystals are photonic materials that selectively reflect specific wavelengths of light and have been made environmentally responsive. In this work, we demonstrate the use of ultrasonication of responsive cholesteric liquid crystal network films to form structurally colored flakes that demonstrate color changes when moved from an aqueous to dry environment and back again, suggesting a scalable technique to form quantities of responsive particles that could conceivably be embedded in permeable hosts to allow the optical detection of humidity or certain chemical species.",

keywords = "additive manufacturing, cholesteric flake, dopants, effect pigments, liquid crystals, polymer photonics, responsive",

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AU - Sol, Jeroen A.H.P.

AU - Kessels, Lana

AU - del Pozo Puig, Marc

AU - Debije, Michael G.

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KW - additive manufacturing

KW - cholesteric flake

KW - dopants

KW - effect pigments

KW - liquid crystals

KW - polymer photonics

KW - responsive

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