Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Potentiometry: Membrane Electrodes01:15

Potentiometry: Membrane Electrodes

564
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...
564

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Nanofluidic systems for ionic intelligence.

Nanoscale horizons·2026
Same author

<i>In situ</i> SERS reveals nickel hydroxide formation in PtRuNi catalysts enhances hydrogen oxidation.

Nanoscale advances·2026
Same author

Chemistry-driven autonomous nanopore membranes.

Nature communications·2026
Same author

Optical Tweezers in Emulsion Research: Principles, Advances, and Prospects.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Plasmonic nanopore to monitor in-pore chemistry.

Chemical communications (Cambridge, England)·2026
Same author

Morphology-modified contributions of electronic transitions to the optical response of plasmonic nanoporous gold metamaterial.

Nature communications·2026

Related Experiment Video

Updated: Jun 25, 2025

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores
09:43

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores

Published on: October 31, 2013

13.5K

Gate-All-Around Nanopore Osmotic Power Generators.

Makusu Tsutsui1, Wei-Lun Hsu2, Denis Garoli3

  • 1The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 5267-0047, Japan.

ACS Nano
|May 28, 2024
PubMed
Summary

Harnessing blue energy from salinity gradients is advanced by controlling ion selectivity in nanofluidic channels. A field-effect approach precisely tunes surface charge, boosting energy conversion efficiency sixfold for osmotic power generation.

Keywords:
electric field controlnanofluidicsnanoporeosmotic powerpermselectivity

More Related Videos

Membrane Transport Processes Analyzed by a Highly Parallel Nanopore Chip System at Single Protein Resolution
11:55

Membrane Transport Processes Analyzed by a Highly Parallel Nanopore Chip System at Single Protein Resolution

Published on: August 16, 2016

11.7K
Monitoring Protein Adsorption with Solid-state Nanopores
08:51

Monitoring Protein Adsorption with Solid-state Nanopores

Published on: December 2, 2011

13.6K

Related Experiment Videos

Last Updated: Jun 25, 2025

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores
09:43

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores

Published on: October 31, 2013

13.5K
Membrane Transport Processes Analyzed by a Highly Parallel Nanopore Chip System at Single Protein Resolution
11:55

Membrane Transport Processes Analyzed by a Highly Parallel Nanopore Chip System at Single Protein Resolution

Published on: August 16, 2016

11.7K
Monitoring Protein Adsorption with Solid-state Nanopores
08:51

Monitoring Protein Adsorption with Solid-state Nanopores

Published on: December 2, 2011

13.6K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Blue energy generation from salinity gradients relies on permselectivity in nanofluidic channels.
  • Surface charge critically influences ion transport and osmotic energy conversion efficiency.
  • Current methods require careful material selection for optimal ion permeability and selectivity.

Purpose of the Study:

  • To introduce a field-effect approach for in situ manipulation of ion selectivity in nanopores.
  • To demonstrate voltage-controlled tuning of surface charge density at the pore wall.
  • To enhance energy conversion efficiency in nanoporous membranes for osmotic power generation.

Main Methods:

  • Utilizing a surround-gate electrode to apply voltage and precisely adjust surface charge density.
  • Investigating ion selectivity changes in multipore membranes under applied electrical fields.
  • Measuring energy conversion efficiency and power density under a salinity gradient.

Main Results:

  • Demonstrated successful in situ manipulation of ion selectivity using a field-effect approach.
  • Achieved permselectivity turnover to enhanced cation-selective transport.
  • Observed a 6-fold increase in energy conversion efficiency, reaching a power density of 15 W/m².

Conclusions:

  • The field-effect method offers precise control over ion selectivity in nanopores.
  • This approach provides a scalable and efficient strategy for enhancing osmotic power generation.
  • Findings advance the fundamental understanding of ion transport in nanochannels for energy applications.