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Updated: Jun 8, 2026

Use of Sacrificial Nanoparticles to Remove the Effects of Shot-noise in Contact Holes Fabricated by E-beam Lithography
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Use of Sacrificial Nanoparticles to Remove the Effects of Shot-noise in Contact Holes Fabricated by E-beam Lithography

Published on: February 12, 2017

Self-aligned nanolithography by selective polymer dissolution.

Huijuan Zhang1, Chee-Leong Wong, Yufeng Hao

  • 1Advanced Materials for Micro- and Nano-Systems Program, Singapore-MIT Alliance, 4 Engineering Drive 3, Singapore.

Nanoscale
|September 14, 2010
PubMed
Summary
This summary is machine-generated.

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Researchers developed a new method to create self-aligned nanoscale trenches in polymer films on conductive materials. This technique protects devices, enabling sensitive electrical sensing in solutions by exposing only the active component.

Area of Science:

  • Materials Science and Engineering
  • Nanotechnology
  • Electrochemistry

Background:

  • Fabricating precise nanoscale structures on conductive materials is crucial for advanced electronic devices.
  • Protecting sensitive components in aqueous environments while maintaining functionality is a significant challenge for sensor development.

Purpose of the Study:

  • To introduce a novel fabrication method for creating self-aligned nanoscale trenches in polymer overlayers on conductive substrates.
  • To demonstrate the utility of this method for creating protected active components for electrical sensors in aqueous solutions.

Main Methods:

  • Passing alternating current (AC) through a polymer-coated nanowire in a suitable solvent to induce localized, accelerated dissolution.
  • Applying the technique to polymer-coated graphene ribbons to achieve similar nanotrench formation.

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Large-area Scanning Probe Nanolithography Facilitated by Automated Alignment and Its Application to Substrate Fabrication for Cell Culture Studies
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Large-area Scanning Probe Nanolithography Facilitated by Automated Alignment and Its Application to Substrate Fabrication for Cell Culture Studies

Published on: June 12, 2018

Expanding Nanopatterned Substrates Using Stitch Technique for Nanotopographical Modulation of Cell Behavior
09:06

Expanding Nanopatterned Substrates Using Stitch Technique for Nanotopographical Modulation of Cell Behavior

Published on: December 8, 2016

Related Experiment Videos

Last Updated: Jun 8, 2026

Use of Sacrificial Nanoparticles to Remove the Effects of Shot-noise in Contact Holes Fabricated by E-beam Lithography
07:47

Use of Sacrificial Nanoparticles to Remove the Effects of Shot-noise in Contact Holes Fabricated by E-beam Lithography

Published on: February 12, 2017

Large-area Scanning Probe Nanolithography Facilitated by Automated Alignment and Its Application to Substrate Fabrication for Cell Culture Studies
09:45

Large-area Scanning Probe Nanolithography Facilitated by Automated Alignment and Its Application to Substrate Fabrication for Cell Culture Studies

Published on: June 12, 2018

Expanding Nanopatterned Substrates Using Stitch Technique for Nanotopographical Modulation of Cell Behavior
09:06

Expanding Nanopatterned Substrates Using Stitch Technique for Nanotopographical Modulation of Cell Behavior

Published on: December 8, 2016

Main Results:

  • Successfully fabricated self-aligned nanoscale trench structures in polymer films covering conductive materials.
  • Demonstrated that the method effectively exposes only the active component (nanowire or graphene ribbon) while the rest of the device remains protected.
  • Achieved consistent results on both polymer-coated nanowires and graphene ribbons.

Conclusions:

  • The developed AC current-assisted dissolution technique offers a novel and effective approach for fabricating self-aligned nanotrenches.
  • This method enables the creation of polymer-protected devices with selectively exposed active components.
  • These protected devices show significant promise for applications as electrical sensors in aqueous solutions, particularly for overcoming signal interference from parasitic ionic currents.