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Updated: Jun 12, 2025

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores
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Solid-state nanopore conductance modulation using integrated microheaters.

Muhammad Sajeer P1,2,3, Ashok Keerthi1,4, Manoj M Varma3

  • 1Department of Chemistry, School of Natural Sciences, University of Manchester, Manchester M13 9PL, United Kingdom.

Nanotechnology
|June 10, 2025
PubMed
Summary
This summary is machine-generated.

We developed a microheater integrated solid-state nanopore for precise localized temperature control. This device enables on-demand heating, enhancing biosensing and single-molecule manipulation applications.

Keywords:
ionic conductivitymicroheaternanofluidicssolid state nanoporetemperature effects on nanopore

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biophysics

Background:

  • Precise temperature control is crucial for advanced applications like biosensing and single-molecule manipulation.
  • Solid-state nanopores offer a platform for nanoscale investigations but lack integrated thermal control.
  • Localized heating can provide an additional parameter for controlling nanopore behavior.

Purpose of the Study:

  • To demonstrate an on-demand localized heating system for solid-state nanopores.
  • To fabricate and characterize a microheater integrated solid-state nanopore.
  • To investigate the thermal behavior and operational limits of the device.

Main Methods:

  • Fabrication of a solid-state nanopore on a silicon nitride membrane with an integrated microheater.
  • Utilizing finite element simulations and a thermal lumped model for device behavior prediction.
  • Experimental characterization including thermal analysis and failure mode analysis.

Main Results:

  • The microheater integrated nanopore demonstrated stable operation in various environments (air, liquid, vacuum).
  • Device behavior was accurately predicted by simulations and corroborated by experimental measurements.
  • The device achieved a conductance tunability of 2.5 nS/V, increasing 0.01M KCl solution conductivity from 0.46 nS to 0.71 nS with a 0.2 V input.

Conclusions:

  • A novel microheater integrated solid-state nanopore enables precise, localized temperature control.
  • The device is robust and suitable for diverse experimental conditions.
  • This technology enhances control over nanopore conductance, opening new possibilities for biosensing and molecular manipulation.