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Updated: Jun 17, 2025

A Closed-Type Wireless Nanopore Electrode for Analyzing Single Nanoparticles

A Closed-Type Wireless Nanopore Electrode for Analyzing Single Nanoparticles

Published on: March 20, 2019

Coupled nanopores for single-molecule detection.

Yung-Chien Chou¹, Chih-Yuan Lin¹, Alice Castan¹

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

Nature Nanotechnology

|August 14, 2024

Summary

This summary is machine-generated.

We developed a novel bilayer nanopore platform for ultrafast, precise detection of unmodified molecules. This reusable system offers advanced molecular sensing capabilities, improving accuracy in applications like DNA sequencing.

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Last Updated: Jun 17, 2025

A Closed-Type Wireless Nanopore Electrode for Analyzing Single Nanoparticles

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Area of Science:

Nanotechnology
Molecular Sensing
Biophysics

Background:

Rapid molecular sensing is crucial for DNA sequencing and protein identification.
Existing atomically thin 2D nanopores have limitations in speed and precision.
Need for advanced platforms for ultrafast detection of unmodified molecules.

Purpose of the Study:

To conceptualize, simulate, and demonstrate a coupled, guiding, and reusable bilayer nanopore platform.
To enable advanced ultrafast detection of unmodified molecules with enhanced precision.
To investigate the effect of pore configuration on molecular translocation signals.

Main Methods:

Fabrication of bilayer nanopore platforms with varying bottom pore numbers (1-9) and a fixed top 2D pore.
Utilizing microsecond resolution capabilities for high-precision measurements.
Simulating and experimentally demonstrating molecular translocation through the coupled nanopores.

Main Results:

Distinct T- and W-shaped translocation signals observed with a single bottom pore configuration.
Precise molecular positioning and sensitivity to fragment lengths achieved.
Demonstrated improved electromechanical control and prolonged dwell times in the 2D sensing zone.

Conclusions:

Coupled bilayer nanopores offer configurable, multifunctional systems for advanced molecular detection.
The platform enables ultrafast and precise sensing of unmodified molecules.
This technology has significant implications for DNA sequencing, protein identification, and other molecular analysis fields.