Research + Discoveries

Beratan's group develops a theory for "flickering resonance" charge transfer

A new theory for charge transport indicates that multiple redox species in close contact can "find" states with nearly matched energy levels, permitting ballistic-like transport during the lifetime of the energy-matched states. 

The theory predicts charge transfer rates that decay exponentially with distance, thus presenting a signature that is easily mistaken for quantum mechanical tunneling. This new mechanism may help to explain charge flow in damaged DNA and in bacterial redox-active nanowires, as well as in some man made solar energy harvesting and conversion structures. 

The results of this study appear online in the Proceedings of the National Academy of Sciences.