Electrically Driven Pumps Based on Conical Pores have High Rectification; Could be of Interest for Pumping Salt
We have designed a new electrically driven pump structure based on conical pores that operates with high efficiency and high rectification with pores that are a few nm in diameter.
Significance and Impact
The pump can be designed to pump salt (cations and anions) in the same direction, which is of interest in desalinization.
- Conical pores allow for tuning the Debye screening length relative to pore opening to optimize rectification.
- Oscillating external and surface voltages enable pumping of both cations and anions.
Advantages of Conical Pores for Ion Pumps
Zhang, Y., Schatz, G.C.
J. Phys. Chem. C 121, 2017, 161-168.
Work performed at Northwestern University