Dr Radha Boya
Winner: 2020 Marlow Award
University of Manchester
For contributions to creating Angstrom-scale atomically smooth capillaries from two-dimensional materials and unravelling the properties of fluids under atomic-scale confinement.
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Tiny pipes or capillaries which can allow flow of fluids through them have interesting mass transport properties when the size of the pipe itself approaches the molecular size. When matter is confined in such ultra-thin pipes, their properties and transport are expected to be quite different from those more familiar in the macroscopic world.
Dr Boya’s research group make two-dimensional slit-like capillaries which are atomic-scale rectangular pipes, by assembling one atom thin sheets in a layer-by-layer fashion. Water moves fast (velocity ~ 1 metre/second) through these capillaries whereas ions such as Na+ and Cl- are not able to pass through. The group explore this unique size selective filtration capability of Å-scale capillaries to investigate fundamental mechanisms of steric exclusion of molecules and ions. Their experiments improve the understanding of molecular transport at the atomic scale and suggest further ways to replicate the mass transport functions of the remarkable machinery of living cells, for example protein channels where the water and ion transport happen at a single molecule level.
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