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Updated: Jun 7, 2026

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

Shape-controlled nanopores in single crystals.

M Drozdov1, Y Kauffmann, W C Carter

  • 1Department of Materials Engineering, Technion-Israel Institute of Technology, Haifa, Israel.

Nanotechnology
|October 30, 2010
PubMed
Summary
This summary is machine-generated.

Electron beam irradiation can create nanometer-scale holes (nanopores) in crystalline silicon. This method offers advantages over amorphous materials, enabling control over nanopore shape and stability for molecular transport studies.

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Last Updated: Jun 7, 2026

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores
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High Resolution Physical Characterization of Single Metallic Nanoparticles
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High Resolution Physical Characterization of Single Metallic Nanoparticles

Published on: June 28, 2019

Area of Science:

  • Materials Science
  • Nanotechnology
  • Physics

Background:

  • Nanometer length-scale holes (nanopores) are crucial for studying molecular mass transport.
  • Typically, nanopores are fabricated in amorphous materials.
  • Fundamental understanding of nanopore formation in crystalline materials is limited.

Purpose of the Study:

  • To investigate the formation and characteristics of nanopores in crystalline silicon (Si) using electron beam irradiation.
  • To analyze the factors influencing nanopore shape and stability.
  • To demonstrate the advantages of using crystalline materials for nanopore fabrication.

Main Methods:

  • Transmission electron microscopy (TEM) was employed to irradiate crystalline silicon with an electron beam, inducing nanopore formation.
  • Analysis of nanopore morphology, including shape and size.
  • Computational simulations were performed to model energetically favorable three-dimensional nanopore shapes and assess their stability in both crystalline and amorphous materials.

Main Results:

  • Nanopores were successfully formed in crystalline silicon via electron beam irradiation, primarily through atomic knock-on events.
  • Surface diffusion was identified as a contributing factor to the observed hour-glass shapes in some nanopores.
  • Simulations indicated that nanopores in crystalline materials are more energetically stable than those in amorphous materials.
  • Nanopore shape was found to be dependent on the diameter-to-length ratio.

Conclusions:

  • Crystalline materials, specifically silicon, offer advantages for controlled nanopore formation compared to amorphous materials.
  • Electron beam irradiation provides a method for controlling the three-dimensional shape of nanopores.
  • This research opens possibilities for tailored nanopore structures for advanced applications.