Defect Unbinding in Active Nematic Tori

Fernandez-Nieves, Alberto

Title:

Defect Unbinding in Active Nematic Tori

dc.contributor.author	Fernandez-Nieves, Alberto
dc.contributor.corporatename	Georgia Institute of Technology. Center for the Science and Technology of Advanced Materials and Interfaces	en_US
dc.contributor.corporatename	Georgia Institute of Technology. School of Physics	en_US
dc.date.accessioned	2018-06-29T16:21:58Z
dc.date.available	2018-06-29T16:21:58Z
dc.date.issued	2018-05-15
dc.description	Presented at the Workshop on Topological Protection in Messy Matter on May 15, 2018 at 9:00 a.m.-9:40 a.m. in the Marcus Nanotechnology Building, Rooms 1116-1118, Georgia Tech.	en_US
dc.description	Chairs: Massimo Ruzzene and Vincenzo Vitelli	en_US
dc.description	Alberto Fernandez-Nieves is with the Georgia Institute of Technology, School of Physics.	en_US
dc.description	Runtime: 48:42 minutes	en_US
dc.description.abstract	We will discuss our recent results with active nematics on toroidal surfaces and show how, despite the intrinsic activity and out-of-equilibrium character of our system, we still observe remnants of the expected curvature-induced defect unbinding predicted for nematics in their ground state. In our experiments, however, the number of defects is far larger than what one would expect for conventional nematics. In addition, these defects move throughout the toroidal surface and explore "phase space", bringing about interesting analogies with what we could call the high-temperature limit of a nematic liquid crystal. We unravel the role of activity by comparing our results to numerical simulations. Overall, our results illustrate the interplay between order, topological constraints, local geometry and activity.	en_US
dc.format.extent	48:42 minutes
dc.identifier.uri	http://hdl.handle.net/1853/60043
dc.language.iso	en_US	en_US
dc.publisher	Georgia Institute of Technology	en_US
dc.relation.ispartofseries	Workshop on Topological Protection in Messy Matter	en_US
dc.subject	Active nematics	en_US
dc.subject	Defects	en_US
dc.subject	Local geometry	en_US
dc.subject	Order	en_US
dc.subject	Topological constraints	en_US
dc.subject	Topology	en_US
dc.subject	Toroidal surface	en_US
dc.title	Defect Unbinding in Active Nematic Tori	en_US
dc.type	Moving Image
dc.type.genre	Lecture
dspace.entity.type	Publication
local.contributor.author	Fernandez-Nieves, Alberto
local.contributor.corporatename	Community for Research on Active Surfaces and Interfaces
local.contributor.corporatename	Center for the Science and Technology of Advanced Materials and Interfaces
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