25/01/2019 Marbach Sophie – ENS, Paris

“Active sieving : from flapping nano-doors to vibrating nanotubes”

– Marbach Sophie –

ENS, Paris

Filtering specific molecules is a challenge faced for several vital needs: from biomedical applications like dialysis to the intensive production of
clean water. The domain has been boosted over the last decades by the possibilities offered by nanoscale materials. Filtration is however always
designed according to a passive sieving perspective: a membrane with small and properly decorated pores allows for the selection of the targeted
molecules. This inevitably impedes the flux and transport, making separation processes costly in terms of energy. Here we investigate
alternative approaches to separation and filtration. We explore the possibility of non-equilibrium sieving, harnessing the difference in the
molecular dynamics of particles to separate them across “active” nanopores.