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TOPACT TERMINATED

Topological defects in nematic liquid crystals of active colloidal rods

Total Cost €

0

EC-Contrib. €

0

Partnership

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Project "TOPACT" data sheet

The following table provides information about the project.

Coordinator
THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD 

Organization address
address: WELLINGTON SQUARE UNIVERSITY OFFICES
city: OXFORD
postcode: OX1 2JD
website: www.ox.ac.uk

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country United Kingdom [UK]
 Project website http://colloid.chem.ox.ac.uk
 Total cost 195˙454 €
 EC max contribution 195˙454 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2015
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2016
 Duration (year-month-day) from 2016-03-08   to  2018-03-07

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD UK (OXFORD) coordinator 195˙454.00

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 Project objective

Active liquid crystals are out-of-equilibrium systems that display intriguing dynamic phenomena, arising from the interplay between topological defects and collective motion. Here, we propose to experimentally study for the first time (i) the dynamics of topological defects in the active colloidal nematic phase and (ii) the interplay between these topological defects and collective dynamics, in three dimensions, at the single particle level, and with full control over the defects. To reach these objectives, we first use a combination of advanced colloidal synthesis and surface modification techniques in order to develop a model system of active colloidal rods of controlled size, aspect ratio and surface properties. We then confine this newly developed model system in microfluidic channels, where the colloidal rods form a nematic liquid crystal. Topological defects will be induced in the nematic phase using specific geometric constraints, which can be varied to control the locations and strengths of the defects, or by optical trapping techniques. Finally, we use state-of-the-art confocal microscopy and sophisticated image analysis techniques to follow, in real time and 3D real space, both the individual particle motion and the collective dynamics in the system. Our work will thus provide experimental verification of the intriguing link between topological defects and collective dynamics in active liquid crystals and inspire novel theories and simulation codes capable of capturing the intrinsic complexity of coupling structure, orientation and activity.

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