Reference : Robust cholesteric liquid crystal elastomer fibres for mechanochromic textiles

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	Focus Areas :	Physics and Materials Science
	To cite this reference:	http://hdl.handle.net/10993/52630

Title :	Robust cholesteric liquid crystal elastomer fibres for mechanochromic textiles
Language :	English
Author, co-author :	Geng, Yong* [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]
	Kizhakidathazhath, Rijeesh* [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]
	Lagerwall, Jan [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]
	* These authors have contributed equally to this work.
Publication date :	29-Sep-2022
Journal title :	Nature Materials
Publisher :	Nature Publishing Group
Volume :	21
Issue/season :	12
Pages :	1441–1447
Peer reviewed :	Yes
Audience :	International
ISSN :	1476-1122
e-ISSN :	1476-4660
City :	London
Country :	United Kingdom
Keywords :	[en] cholesteric liquid crystal elastomer ; fibres ; mechanochromic textiles
Abstract :	[en] Mechanically responsive textiles have transformative potential in many areas from fashion to healthcare. Cholesteric liquid crystal elastomers have strong mechanochromic responses that offer attractive opportunities for such applications. Nonetheless, making liquid crystalline elastomer fibres suitable for textiles is challenging since the Plateau–Rayleigh instability tends to break up precursor solutions into droplets. Here, we report a simple approach that balances the viscoelastic properties of the precursor solution to avoid this outcome and achieve long and mechanically robust cholesteric liquid crystal elastomer filaments. These filaments have fast, progressive and reversible mechanochromic responses, from red to blue (wavelength shift of 155 nm), when stretched up to 200%. Moreover, the fibres can be sewed into garments and withstand repeated stretching and regular machine washing. This approach and resulting fibres may be useful for applications in wearable technology and other areas benefiting from autonomous strain sensing or detection of critically strong deformations.
Funders :	European Research Council
Name of the research project :	consolidator project INTERACT, grant agreement no. 648763; awardee, J.P.F.L.
Target :	Researchers ; Professionals ; Students ; Others
Permalink :	http://hdl.handle.net/10993/52630
DOI :	doi.org/10.1038/s41563-022-01355-6
Other URL :	https://www.nature.com/articles/s41563-022-01355-6

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