Dislocations and metastable chevrons in the electroconvective inplane normal roll state of a bent core nematic liquid crystal

Krishnamurthy, Kanakapura S; Pramod, Tadapatri; Viswanath, P.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/6088

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DC Field	Value	Language
dc.contributor.author	Krishnamurthy, Kanakapura S	-
dc.contributor.author	Pramod, Tadapatri	-
dc.contributor.author	Viswanath, P.	-
dc.date.accessioned	2014-12-24T06:21:49Z	-
dc.date.available	2014-12-24T06:21:49Z	-
dc.date.issued	2014-10-07	-
dc.identifier.citation	Soft Matter, 2014, Vol. 10, p 7316	en
dc.identifier.issn	1744-6848 (Online)	-
dc.identifier.issn	1744-683X	-
dc.identifier.uri	http://hdl.handle.net/2289/6088	-
dc.description	Restricted Access.	en
dc.description.abstract	We report experimental results on the formation, dynamics, and annihilation of edge dislocations of opposite topological charge in the electroconvective inplane vortex state of a bent core nematic liquid crystal. The approach of paired, oppositely charged defects toward each other is a two-step process. Near constant velocity at large separation and accelerated motion close to annihilation are found, as in the case of nematic rolls belonging to standard electroconvection. Periodic arrays of dislocations of alternating polarity form upon a sudden, strong elevation of the control parameter. Chevron structures that appear between undulatory defect chains are metastable, and their decay with time is accompanied by an exponential reduction in the dislocation density. The initial periodicity of defect chains also drops exponentially with increasing field	en
dc.language.iso	en	en
dc.publisher	Royal Society of Chemistry	en
dc.relation.uri	http://dx.doi.org/10.1039/C4SM00906A	en
dc.rights	2014 Royal Society of Chemistry	en
dc.subject	12months	en
dc.title	Dislocations and metastable chevrons in the electroconvective inplane normal roll state of a bent core nematic liquid crystal	en
dc.type	Article	en
Appears in Collections:	Research Papers (SCM)

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