ORGANISATION/COMPANYLOMA, University of Bordeaux
RESEARCH FIELDPhysics › Computational physics
RESEARCHER PROFILEFirst Stage Researcher (R1)
APPLICATION DEADLINE15/06/2019 23:00 - Europe/Athens
LOCATIONFrance › Talence
TYPE OF CONTRACTTemporary
HOURS PER WEEK40
Active particles self-propel by absorbing energy from their surroundings or from an internal reservoir. Nature’s example of these include swimming bacteria, while artificial microswimmers can be realised using active Janus colloids.
Understanding how to direct and control these self-motile objects is grand challenge in soft matter physics due to the possibility to create autonomous materials, where the constituents can carry-out tasks independently. Recently is has been demonstrated that fluid topology, e.g. the orientational order of liquid crystals, can be used to orient and guide both bacterial and artificial microswimmers.
In this PhD project, we will study the hydrodynamics of spherical microswimmers in complex fluids for example in liquid crystals, using lattice Boltzmann simulations. The active particles move by locally stirring the nearby fluid. Pullers pull the fluid towards themselves along to direction of the motion while pushers push the fluid away. The interactions between the particle induced flow fields and the anisotropic nature of liquid crystals, can give a rise to aligning torques on the particles. To fully realise both the microswimmer flow fields and the hydrodynamic coupling to the liquid crystalline fluid, we will use lattice Boltzmann simulations. This allows us to simultaneously resolve both the hydrodynamics of the microswimmers as well as the liquid crystalline fluid. The simulations will be supported by analytical calculations.
The application consists of a full CV, letter of motivation, contact details of two academic referees and grades for master (M1 and M2). The should be send as an email preferably in pdf format.
Applications will be reviewed as received, with the position remaining open until filled.
Informal enquiries are welcome.
REQUIRED EDUCATION LEVELPhysics: Master Degree or equivalent
We are looking for a very motivated student, with a masters degree in physics, engineering, mathematics, chemistry or related fields, with a strong interest in numerical simulations and willingness to learn. The candidate is expected to have strong communication skills in English and/or French.
EURAXESS offer ID: 399274
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