Contact

Dr Valeria Garbin
Chemical Engineering
Imperial College London
London SW7 2AZ
+44 20 759 42878
v.garbin at imperial.ac.uk

Postdoc position

A postdoc position on soft matter and rheology will become available in Autumn 2017 as part of the ExtreFlow project. For more information, visit the project page here

Funding


 

Links

COST Action 'Flowing Matter'

The Department of Chemical Engineering is a member of

ExtreFlow

Extreme deformation of structured fluids and interfaces 

Exploiting ultrafast collapse and yielding phenomena for new processes and formulated products

ERC-2014-StG | Project no. 639221


The increasing demand for environmentally friendly, healthier, and better performing formulated products means that the process industry needs more than ever predictive models of formulation performance for rapid, effective, and sustainable screening of new products. Processing flows and end use produce deformations that are extreme compared to what is accessible with existing experimental methods. As a consequence, the effects of extreme deformation are often overlooked without justification.

Extreme deformation of structured fluids and soft materials is an unexplored dynamic regime where unexpected phenomena may emerge. New flow-induced microstructures can arise due to periodic forcing that is much faster than the relaxation timescale of the system, leading to collective behaviors and large transient stresses.

The goal of this research is to introduce a radically innovative approach to explore and characterize the regime of extreme deformation of structured fluids and interfaces. By combining cutting-edge techniques including acoustofluidics, microfluidics, and high-speed imaging, we will perform pioneering high-precision measurements of macroscopic stresses and evolution of the microstructure. We will also explore strategies to exploit the phenomena emerging upon extreme deformation (collapse under ultrafast compression, yielding) for new processes and for adding new functionality to formulated products.

These experimental results, complemented by discrete particle simulations and continuum-scale modeling, will provide new insights that will lay the foundations of the new field of ultrafast soft matter. Ultimately the results of this research program will guide the development of predictive tools that can tackle the time scales of realistic flow conditions for applications to virtual screening of new formulations.

Postdoc position

A postdoc position on high-frequency rheology of structured fluids will become available in Autum 2017 as part of the ExtreFlow project. The goal of the research is to develop a new experimental method for high-frequency rheology, with simultaneous high-speed visualisation of the microstructure. The ideal candidate will have experience in one or more of the following: bulk rheology, extensional rheology, constitutive models, rheology of colloidal gels and glasses, rheo-optics.

The position will be available from 01 October 2017. The search will open in August. This page will be updated in due course with information on how to apply. We welcome informal enquiries from interested candidates. 

Team

Valeria Garbin
Valeria Garbin (PI)


Axel Huerre (postdoc)


Marco De Corato (postdoc)

Saikat Saha
(PhD student)

Publications

4. K. Achakulwisut, C. Tam, A. Huerre, R. Sammouti, B. P. Binks, V. Garbin, Stability of clay particle-coated microbubbles in alkanes against dissolution induced by heating (submitted)

3. A. Jamburidze, M. De Corato, A. Huerre, A. Pommella, V. Garbin, High-frequency linear rheology of hydrogels probed by ultrasound-driven microbubble dynamics (submitted)

2. V. Poulichet, A. Huerre, V. Garbin, Shape oscillations of particle-coated bubbles and directional particle expulsionSoft Matter (2016)

1. M. Tinguely, M. G. Hennessy, A. Pommella, O. K. Matar, V. Garbin, Surface waves on a soft viscoelastic layer produced by an oscillating microbubbleSoft Matter 12, 4247 (2016)