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NGCM-0080: Design and optimisation of bio-inspired programmable surfaces with active materials.

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  • Full or part time
    Dr G. Limbert
  • Application Deadline
    No more applications being accepted
  • Competition Funded PhD Project (European/UK Students Only)
    Competition Funded PhD Project (European/UK Students Only)

Project Description

In Nature, a number of animals and plants have evolved the ability to exploit patterned surfaces at various scales (e.g. Lotus flower, shark cuticles) to their advantages. Dynamic or adaptive patterned surfaces are very desirable as they can be adapted to specific contexts, operating conditions and environments. Cephalopods such as octopus (Figure 1), squid and cuttlefish possess some of the most striking abilities in the animal kingdom: camouflage via rapid colour change and, of particular relevance for this project, adaptive change of the three-dimensional texture of their skin. Their skin acts as a programmable morphing soft surface. In an engineering context, this type of functional ability can open up a vast array of practical applications from programmable haptic surfaces, morphing skin to control hydro-/aerodynamic drag (i.e. tunable friction) through antibiofouling strategies, to flexible electronics and tissue engineering and regenerative medicine.

In this research, it is proposed to explore the use of soft active materials that respond to external stimuli in a controlled manner to induce various levels of potentially large surface deformation. Soft active materials respond to an external stimulus to perform a function or exhibit a change in material properties. Examples include dielectric elastomers that deform under electricity and force, and hydrogels that swell under a change in temperature or pH value. The proposed research aims to understand the physical mechanisms behind surface instabilities and to achieve enhanced functions by harnessing or suppressing instabilities through the development of a robust and efficient finite element environment featuring integrated optimisation techniques. We aim to model how coupled fields such as stress, electric field, and chemical potential interact together to cause deformation and instabilities in such materials. Theoretical modelling and numerical simulations will be performed to better understand such coupled responses. It is anticipated that the numerical tools to be developed may advance the understanding of surface patterning, and also facilitate the design of new materials and structures.

If you wish to discuss any details of the project informally, please contact Dr. Georges Limbert, nCATS research group, Email: [email protected] Tel: +44 (0) 2380 59 2381.

This project is run through participation in the EPSRC Centre for Doctoral Training in Next Generation Computational Modelling (http://ngcm.soton.ac.uk). For details of our 4 Year PhD programme, please see http://www.findaphd.com/search/PhDDetails.aspx?CAID=331&LID=2652

For a details of available projects click here http://www.ngcm.soton.ac.uk/projects/index.html

How good is research at University of Southampton in General Engineering?

FTE Category A staff submitted: 192.23

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