FOR 5584:  Transient Sieves

• Subject Area: Thermal Engineering/Process Engineering ; Chemistry ; Materials Science and Engineering ; Mathematics ; Physics
• Term: since 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 509491635

The purpose of the proposed Research Unit is to explore transient sieves, based on a close coordination among experiments and theory/simulations. Transient sieves constitute a novel technological concept to separate species dissolved or suspended in a liquid. While mainly stationary-state pores have been explored experimentally to date, the pores of a transient sieve change their permeability on the timescale of species passage. This should equip sieves with novel and useful properties, for example an enhanced selectivity and/or reduced energy consumption. A fundamental objective will be to understand the key phenomena in the passage of species through transient sieves. Further objectives are the experimental realization of transient properties of sieves, the optimization of the spatial structure of transient sieves and the temporal structure of the permeability, and the demonstration of the advantages of transient sieves compared to standard separation methods. The proposed Research Unit comprises three different cases of lead experiments that represent specific realizations of transient sieves. The proposed Research Unit will serve as a nucleus for novel separation technologies that has the potential to replace existing technologies in numerous different application areas.

• DFG Programme: Research Units

Projects

• Coordination Funds (Applicant Hardt, Steffen )
• Design principles for transient sieves based on colloidal motors (Applicant Liebchen, Benno )
• Electrokinetic non-equilibrium effects in transient nanopores (Applicants Hardt, Steffen ;  Liebchen, Benno )
• Highly accurate simulation of electrokinetic transport processes in nanopores (Applicant Marschall, Holger )
• Highly ordered, electrically modulatable, conductive mesoporous separation layers (Applicant Andrieu-Brunsen, Annette )
• Investigation of transient transport processes using single gold nanopores as model systems (Applicant Toimil-Molares, Maria Eugenia )
• Light-controlled transient barriers (Applicant von Klitzing, Regine )
• Numerical Models for Two-Phase flows in Electric Fields (Applicant Kummer, Florian )
• Species Transport via Ping-Pong Droplets (Applicant Hardt, Steffen )

• Spokesperson: Professor Dr. Steffen Hardt