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ActiDoC

Active Doping in Colloids

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EC-Contrib. €

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Partnership

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Project "ActiDoC" data sheet

The following table provides information about the project.

Coordinator
THE UNIVERSITY OF EDINBURGH 

Organization address
address: OLD COLLEGE, SOUTH BRIDGE
city: EDINBURGH
postcode: EH8 9YL
website: www.ed.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]
 Total cost 183˙454 €
 EC max contribution 183˙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-2014
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2015
 Duration (year-month-day) from 2015-04-01   to  2017-03-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    THE UNIVERSITY OF EDINBURGH UK (EDINBURGH) coordinator 183˙454.00

Map

 Project objective

Great interest has recently been sparked in active soft matter and more specifically mixtures of active with passive systems. These works have shown how passive colloidal particles influenced by activity, give rise to interesting non-equilibrium interactions and microscopic transport effects. However, the effects of mixing diverse biological and synthetic active systems with passive particles are far from understood. Developing on the applicant’s experience, we propose a combined experimental and simulation physics-based study of the effects of doping active systems in concentrated suspensions of passive particles, while simultaneously looking at the dynamical properties of a single passive particle in a bath of activity. Initially we plan to experimentally examine a well-characterised model active system; platinum coated polystyrene Janus particles in a 2D geometry, mixed with passive particles. Using microscopy and particle tracking, we will study the effects and phase behaviour of active doping on dilute and dense suspensions of particles in a well-controlled setting. Simultaneously we will carry out overdamped dynamical simulations to guide and supplement experimental measurements. Subsequently, we plan to branch out and increase the complexity by expanding to 3D systems and other types of activity. Active doping of concentrated passive suspensions is expected to strongly influence phase and macroscopic behaviours, while doping of dilute suspensions will allow modification of the dynamics of single particles. Therefore, our work will provide fundamental understanding on the workings of activity on passive systems, leading to new insights for macroscopic applications, on processing and design of targeted materials, as well as and lab-on-a-chip applications dealing with microscopic transport and sorting. The candidate will work on cutting edge active systems within the group of Prof. W. Poon, the holder of an ERC Advanced Grant on the physics of active matter.

 Publications

year authors and title journal last update
List of publications.
2016 Nick Koumakis, John F. Brady, George Petekidis
Amorphous and ordered states of concentrated hard spheres under oscillatory shear
published pages: 119-132, ISSN: 0377-0257, DOI: 10.1016/j.jnnfm.2016.02.004
Journal of Non-Newtonian Fluid Mechanics 233 2019-07-23
2016 N Koumakis, A Gnoli, C Maggi, A Puglisi, R Di Leonardo
Mechanism of self-propulsion in 3D-printed active granular particles
published pages: 113046, ISSN: 1367-2630, DOI: 10.1088/1367-2630/18/11/113046
New Journal of Physics 18/11 2019-07-23
2017 Esmaeel Moghimi, Alan R. Jacob, Nick Koumakis, George Petekidis
Colloidal gels tuned by oscillatory shear
published pages: 2371-2383, ISSN: 1744-683X, DOI: 10.1039/C6SM02508K
Soft Matter 13/12 2019-07-23
2016 N. Koumakis, M. Laurati, A. R. Jacob, K. J. Mutch, A. Abdellali, A. B. Schofield, S. U. Egelhaaf, J. F. Brady, G. Petekidis
Start-up shear of concentrated colloidal hard spheres: Stresses, dynamics, and structure
published pages: 603-623, ISSN: 0148-6055, DOI: 10.1122/1.4949340
Journal of Rheology 60/4 2019-07-23

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