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Related Experiment Video

Updated: Jun 30, 2026

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
08:07

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates

Published on: June 18, 2013

Vertically aligned nanowires from boron-doped diamond.

Nianjun Yang1, Hiroshi Uetsuka, Eiji Osawa

  • 1Diamond Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan. nianjun-yang@asit.go.jp

Nano Letters
|September 24, 2008
PubMed
Summary

Researchers fabricated diamond nanowires using nanodiamond masks and etching. These nanowires show enhanced electrode area and potential for biosensor applications due to controlled functionalization.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Surface Chemistry

Background:

  • Vertically aligned nanostructures are crucial for advanced electronic and sensing devices.
  • Controlling the geometry and surface properties of nanowires is key to optimizing their performance.
  • Diamond nanostructures offer unique electronic and chemical stability advantages.

Purpose of the Study:

  • To fabricate vertically aligned diamond nanowires with controlled dimensions.
  • To characterize the surface structure, electronic properties, and functionalization capabilities of these nanowires.
  • To evaluate the potential of functionalized diamond nanowires for biosensor applications.

Main Methods:

  • Fabrication using nanodiamond particles as a hard mask and reactive ion etching.

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Last Updated: Jun 30, 2026

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
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Published on: June 18, 2013

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  • Characterization via atomic force microscopy (AFM) and scanning tunneling microscopy (STM).
  • Electrochemical techniques for surface and functionalization analysis.

    • Main Results:

    • Successfully fabricated diamond nanowires with controlled length (3-10 nm) and spacing (approx. 11 nm).
    • Observed a twofold enhancement in electrode active area compared to unpatterned surfaces.
    • Demonstrated successful functionalization of nanowire tips with nitrophenyl molecules, confirmed by STM.

    Conclusions:

    • Vertically aligned diamond nanowires can be precisely fabricated with controllable dimensions.
    • The enhanced electrode area and functionalization potential make these nanowires promising for biosensor development.
    • Tip-functionalized diamond nanowires offer improved chemical stability and sensing capabilities for biomolecule detection.