Limiting and overlimiting conductance in field-effect gated nanopores

作者：Liu Yang^*; Huber David E; Dutton Robert W

来源：Applied Physics Letters, 2010, 96(25): 253108.

DOI：10.1063/1.3457350

• electric admittance
• nanofluidics
• nanoporous materials
• rectification
• vortices

Numerical modeling of the coupled ionic and fluidic transport in field-effect gated nanopores reveals highly nonlinear current-voltage characteristics, including cross-over, rectification, and particularly limiting and overlimiting conductance. The limiting and overlimiting characteristics are shown to be greatly enhanced by the inherently coupled fluid flow and correlate with electrokinetic phenomena such as concentration polarization and vortex formation. The underlying reason for the observed nonlinear characteristics is explained by considering the symmetry properties of the electrical biasing.

• 出版日期2010-6-21