Heterogeneity of multiple-pore membranes investigated with ion conductance microscopy. Academic Article

abstract

• Heterogeneous conductance of individual pores on a porous membrane was studied with a four-electrode scanning ion conductance microscope (SICM). Application of a potential difference across the membrane resulted in migration of ions through nanopores, where subsequent conductance changes were measured by a nanopipet positioned above the nanopore as a change in pipet current. Current responses of single-pore membranes and individual pores within a multipore membrane were examined and demonstrated variations in ion current rectification (ICR) ratios due to the small differences in pore geometries.

authors

• Baker, Lane

published proceedings

• Anal Chem

author list (cited authors)

• Zhou, Y. i., Chen, C., & Baker, L. A.

citation count

• 35

complete list of authors

• Zhou, Yi||Chen, Chiao-Chen||Baker, Lane A

publication date

• March 2012

publisher

• American Chemical Society (ACS)  Publisher

published in

• Analytical Chemistry  Journal

keywords

• Electric Conductivity
• Electrodes
• Equipment Design
• Ions
• Membranes, Artificial
• Microscopy
• Nanopores
• Porosity

PubMed Central ID

• 22390616

Digital Object Identifier (DOI)

• 10.1021/ac300257q

start page

• 3003

end page

• 3009

volume

• 84

issue

• 6

URL

• http://dx.doi.org/10.1021/ac300257q