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I am an experimental physicist, with broad research interests in fluidic behaviour and soft matter physics.

I began my research career as a PhD student at NTU, focusing on polymeric and droplet dynamics, in particular, aqueous polymer solutions that dry to form structures which deviate from the common "coffee-ring" deposit, and instead can grow pillars up to 3x their initial droplet height as the polymer undergoes a phase transition. As the coffee-ring effect is a particular problem to the ink-jet printing industry, the explanation of this behaviour has received significant attention. Since then, as a post-doctoral researcher, I have stayed within the realm of soft matter physics, exploring: the shapes of levitating, spinning droplets relevant to the geophysical phenomenon of tektite formation; the inhibition of a magnetically induced Rayleigh-Taylor instability by rotational Coriolis forces; vibration induced self-propulsion of a two-sphere dimer; and active emulsions, where droplets swim as the system evolves from an out-of-equilibrium state into a nano-emulsion. The latter has further branched my experience into liquid crystals, which can be used to modify the swimming behaviour via a cascade of symmetry-breaking.

There is a rich tapestry of problems to be solved in fluid dynamics and soft matter physics, and pondering these unanswered questions keeps my neurons firing, and my enthusiasm high. It is a constant source of amazement to me that, with some pumps, liquids, dyes and magnets, one can gain insight into a wide variety of seemingly unrelated physical phenomena, such as tectonic drift, atomic fission, and even supernovae.

Projects:

DRYING DROPLETS
SPINNING DROPLETS
SWIMMING DROPLETS
SWIMMING DIMERS
RAYLEIGH-TAYLOR INSTABILITY
FLYING "FLEAS" (under construction)

Publications (link to Google Scholar profile):