Contact

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

Postdoc position

We are looking for a postdoc in Soft Matter and Rheology (experiment) as part of the ERC-funded project ExtreFlow. For details and to apply online, follow this link. Closing date: 30 September 2017.

Funding


 

Links

UK Fluids Network logo

COST Action 'Flowing Matter'logo

The Department of Chemical Engineering is a member of logo

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


Postdoc position

A postdoc position on high-frequency rheology of structured fluids is available 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.

For details and to apply online, follow this link. The deadline for applications is 30 September 2017. The start date will preferably be on or before 1 November 2017. We welcome informal enquiries from interested candidates. 

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.

Team

Valeria Garbin
Valeria Garbin (PI)


Axel Huerre (postdoc)


Marco De Corato (postdoc)

Saikat Saha
(PhD student)

Publications

6. M. De Corato, V. Garbin, Capillary interactions between dynamically forced particles adsorbed at a planar interface and on a bubble (submitted)

5. A. Huerre, F. Cacho-Nerin, V. Poulichet, C. E. Udoh, M. De Corato, and V. Garbin, Dynamic organization of soft nanoparticles during adsorption and surface compression at fluid-fluid interfaces (submitted)

4. A. Jamburidze, M. De Corato, A. Huerre, A. Pommella, V. Garbin, High-frequency linear rheology of hydrogels probed by ultrasound-driven microbubble dynamicsSoft Matter 13, 3946 (2017)

3. 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 heatingLangmuir 33, 3809 (2017)

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)