Related Experiment Video
Updated: Apr 18, 2026

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores
Published on: October 31, 2013
An improved model for predicting electrical conductance in nanochannels
M Taghipoor1, A Bertsch, Ph Renaud
1Microsystems Laboratory, Ecole Polytechnique Federale de Lausanne, EPFL STI-IMT-LMIS, Station 17, 1015 Lausanne, Switzerland. mojtaba.taghipoor@epfl.ch.
Abstract:
Nanochannel conductance measurements are commonly performed to characterize nanofluidic devices Theoretical analysis and experimental investigations imply that the nanochannel conductance does not follow the macro-scale models. It is generally accepted that the conductance of nanochannels deviates from the bulk and trend to a constant value at low concentrations. In this work, we present an improved model for the nanochannel conductance that takes into account the surface chemistry of the nanochannel wall. It figured out that the nanochannel conductance is no longer constant at low concentrations. The model predictions were compared with the experimental measurements and showed a very good agreement between the model and the experiments.
Related Concept Videos
Debye–Huckel–Onsager Conductance Equation
Electrical Conductivity
In a practical conductor, an applied electric field may be sustained, causing a flow of electrons, which produce a current. The differential form of the current, the current density, is related to the electric field.
More generally, it is related to the force per unit charge, which involves the...
Electrical Transport
The Electrical Double Layer
Theory of Metallic Conduction
In this theory, Newton's second law of motion is used to determine the acceleration of an electron in the presence of an applied electric field. Then, its velocity is expressed via this acceleration.
An electron moves through the crystal, containing positive ions,...
Boundary Conditions for Current Density

