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Updated: May 15, 2026

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

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

Published on: October 31, 2013

Electrically controlled nanoparticle synthesis inside nanopores.

Kimberly Venta¹, Meni Wanunu, Marija Drndić

¹Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.

|December 20, 2012

Summary

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Researchers utilized silicon nitride nanopores for controlled metal nanoparticle synthesis. This method allows real-time monitoring of particle formation via electrical current, offering a novel approach to nanoparticle fabrication.

Area of Science:

Materials Science
Nanotechnology
Electrochemistry

Background:

Nanopores in silicon nitride membranes have enabled single-molecule measurements.
Controlled synthesis of nanoparticles is crucial for various applications.

Purpose of the Study:

To explore the use of nanopores as subzeptoliter mixing volumes for controlled metal nanoparticle synthesis.
To monitor nanoparticle formation in real-time using electrical current.

Main Methods:

Utilized silicon nitride nanopores as microreactors for nanoparticle synthesis.
Applied an electric field across the nanopore membrane to drive reactive ions.
Monitored ion current changes to detect and observe nanoparticle formation.

Main Results:

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Last Updated: May 15, 2026

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

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

Published on: October 31, 2013

A Closed-Type Wireless Nanopore Electrode for Analyzing Single Nanoparticles

A Closed-Type Wireless Nanopore Electrode for Analyzing Single Nanoparticles

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Aqueous Droplets Used as Enzymatic Microreactors and Their Electromagnetic Actuation

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Demonstrated controlled synthesis of gold nanoparticles within sub-10 nm diameter pores.
Observed real-time particle growth by monitoring electrical current, unlike traditional methods.
Correlated current-time signals with the Richards growth curve, indicating access-limited growth.

Conclusions:

Nanopores serve as effective subzeptoliter reactors for controlled metal nanoparticle synthesis.
Real-time electrical current monitoring provides a dynamic method for observing and controlling nanoparticle growth.
The study elucidates the dynamics and influencing factors of nanoparticle formation in nanopores.