Reference : Liquid crystal elastomer shell actuators with negative order parameter

	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/10993/39394

Title :	Liquid crystal elastomer shell actuators with negative order parameter
Language :	English
Translated title :	[en] Liquid crystal elastomer shell actuators with negative order parameter
Author, co-author :	Jampani, Venkata [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
	Reguengo De Sousa, Kevin [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit]
	Ferreira Machado, Joana [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit]
	Lagerwall, Jan [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
	Volpe, Ross H [University of Colarado Denver > Mechanical engineering]
	Yakacki, Christopher M [University of Colorado Denver > Mechanical Engineering]
Publication date :	12-Apr-2019
Journal title :	Science Advances
Publisher :	American Association for the Advancement of Science(AAAS)
Volume :	5
Issue/season :	4
Pages :	1
Peer reviewed :	Yes (verified by ORBilu)
Audience :	International
ISSN :	2375-2548
City :	Washington D.C
Country :	USA
Keywords :	[en] Liquid Crystal ; Elastomer ; Order Parameter ; Anti-order ; Negative order parameter ; Actuator
Abstract :	[en] Liquid crystals (LCs) are nonsolids with long-range orientational order, described by a scalar order parameter ⟨P2⟩=1/2⟨3cos2β−1⟩. Despite the vast set of existing LC materials, one-third of the order parameter value range, −1/2< 〈P2〉 < 0, has until now been inaccessible. Here, we present the first material with negative LC order parameter in its ground state, in the form of elastomeric shells. The optical and actuation characteristics are opposite to those of conventional LC elastomers (LCEs). This novel class of anti-ordered elastomers gives access to the previously secluded range of liquid crystallinity with 〈P2〉 < 0, providing new challenges for soft matter physics and adding a complementary type of LCE actuator that is attractive for applications in, e.g., soft robotics
Funders :	ERC, FNR
Name of the research project :	Intelligent Non-woven Textiles and Elastomeric Responsive materials by Advancing liquid Crystal Technology
Target :	Researchers ; Professionals ; General public
Permalink :	http://hdl.handle.net/10993/39394
DOI :	10.1126/sciadv.aaw2476
Other URL :	https://advances.sciencemag.org/content/5/4/eaaw2476
Framework Programme / European Project :	H2020 ; 648763 - INTERACT - Intelligent Non-woven Textiles and Elastomeric Responsive materials by Advancing liquid Crystal Technology
FnR project :	FnR ; FNR11703329 > Venkata Subba Rao Jampani > TRENDSETTER > Template-free Reconfigurable Nematic Defect-arrays for designing Self-organisable Topological Three-dimensional Elastomer responsive-Rafts > 15/11/2017 > 14/10/2020 > 2017

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	Fulltext file(s): File Commentary Version Size Access Open access Liquid crystal elastomer shell actuators with negative order parameter.pdf Publisher postprint 3.99 MB View/Open Additional material(s): File Commentary Size Access Open access Liquid crystal elastomer shell actuators with negative order parameter _SM.pdf 1.37 MB View/Open Open access aaw2476_Movie_S5.mp4 5.6 MB View/Open Open access aaw2476_Movie_S4.mp4 4.57 MB View/Open Open access aaw2476_Movie_S3.mp4 5.95 MB View/Open Open access aaw2476_Movie_S2.mp4 4.65 MB View/Open Open access aaw2476_Movie_S1.mp4 4.66 MB View/Open

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