skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Electroosmotic Flow Rectification in Membranes with Asymmetrically Shaped Pores: Effects of Current and Pore Density

Journal Article · · Journal of Physical Chemistry. C

We have recently demonstrated a new electrokinetic phenomenon—electroosmotic flow rectification in membranes with asymmetrically shaped pores. Flow rectification means that at constant driving force the flow rate in one direction through the membrane is faster than the flow rate in the opposite direction. EOF rectification could be of practical use in microfluidic devices incorporating porous membranes, but additional research is required. As such, we explore here the effects of two key experimental variables—current density used to drive flow through the membrane and membrane pore density—on EOF rectification. We have found that the extent of EOF rectification, as quantified by the rectification ratio, increases with increasing current density. In contrast, the rectification ratio decreases with increasing membrane pore density. We propose explanations for these results based on simple EOF and membrane-transport theories.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Nanostructures for Electrical Energy Storage (NEES)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001160
OSTI ID:
1385988
Journal Information:
Journal of Physical Chemistry. C, Vol. 119, Issue 29; Related Information: NEES partners with University of Maryland (lead); University of California, Irvine; University of Florida; Los Alamos National Laboratory; Sandia National Laboratories; Yale University; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 27 works
Citation information provided by
Web of Science

References (23)

Protein Biosensors Based on Biofunctionalized Conical Gold Nanotubes journal April 2005
Conical-Nanotube Ion-Current Rectifiers:  The Role of Surface Charge journal September 2004
An Asymmetric Polymer Nanopore for Single Molecule Detection journal March 2004
Ion-Current Rectification in Nanopores and Nanotubes with Broken Symmetry journal April 2006
Electroosmotic Flow Rectification in Pyramidal-Pore Mica Membranes journal February 2010
Gateable Nanofluidic Interconnects for Multilayered Microfluidic Separation Systems journal March 2003
The dependence of electro-osmotic flow on current density and time journal February 1983
Diode-like single-ion track membrane prepared by electro-stopping journal November 2001
Electro-responsive asymmetric nanopores in polyimide with stable ion-current signal journal March 2003
A Method for Reproducibly Preparing Synthetic Nanopores for Resistive-Pulse Biosensors journal August 2007
Etching of Submicron Pores in Irradiated Mica journal March 1970
Scanning electron microscope analysis of etch pits obtained in a Muscovite mica track detector by etching in hydrofluoric acid and aqueous solutions of NaOH and KOH journal November 1981
Nanomaterials: A Membrane-Based Synthetic Approach journal December 1994
Template Synthesis of Carbon Nanotubes with Diamond-Shaped Cross Sections journal October 2007
Accurate characterization of single track-etched, conical nanopores journal January 2014
Resistive-Pulse Studies of Proteins and Protein/Antibody Complexes Using a Conical Nanotube Sensor journal October 2007
Ionic mobility in microcapillaries. A test for anomalous water structures
  • Anderson, John L.; Quinn, John A.
  • Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, Vol. 68, Issue 0 https://doi.org/10.1039/f19726800744
journal January 1972
Model Pores of Molecular Dimension journal August 1972
Electroosmotic Flow in Template-Prepared Carbon Nanotube Membranes
  • Miller, Scott A.; Young, Vaneica Y.; Martin, Charles R.
  • Journal of the American Chemical Society, Vol. 123, Issue 49, p. 12335-12342 https://doi.org/10.1021/ja011926p
journal December 2001
Modification of electrochemical properties of pore wall of track-etched mica membranes journal February 1986
A Poisson/Nernst-Planck model for ionic transport through synthetic conical nanopores journal July 2005
Ultrafast high-pressure AC electro-osmotic pumps for portable biomedical microfluidics journal January 2010
AC electroosmotic pump with bubble-free palladium electrodes and rectifying polymer membrane valves journal January 2006

Cited By (4)

A highly selective and recyclable NO-responsive nanochannel based on a spiroring opening−closing reaction strategy journal March 2019
Alternating electric field-induced ion current rectification and electroosmotic pump in ultranarrow charged carbon nanocones journal January 2018
A pyrophosphate-activated nanochannel inspired by a TRP ion channel journal January 2019
A biomimetic chiral-driven ionic gate constructed by pillar[6]arene-based host–guest systems journal July 2018