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Updated: Jun 17, 2026

Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding
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Published on: January 9, 2014

Nanoscale structural engineering via phase segregation: Au-Ge system.

Yu-Lun Chueh1, Cosima N Boswell, Chun-Wei Yuan

  • 1Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, California 94720, USA.

Nano Letters
|January 7, 2010
PubMed
Summary
This summary is machine-generated.

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Researchers engineered nanowire structures using alloying and phase segregation. This method allows tunable control over nanostructure formation for advanced materials.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Solid State Chemistry

Background:

  • Template-assisted fabrication enables precise control over nanomaterial structures.
  • The gold-germanium (Au-Ge) system offers unique properties due to its low eutectic temperature and minimal solid solubility.
  • Understanding phase segregation and alloying in nanowires is crucial for developing novel electronic components.

Purpose of the Study:

  • To demonstrate tunable structural engineering of nanowires via template-assisted alloying and phase segregation.
  • To investigate the formation mechanisms of various nanostructures in the Au-Ge system.
  • To correlate the resulting nanostructures with their electrical properties.

Main Methods:

  • Utilizing the Au-Ge system for template-assisted fabrication.

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Last Updated: Jun 17, 2026

Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding
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Published on: January 9, 2014

A Modular Microfluidic Technology for Systematic Studies of Colloidal Semiconductor Nanocrystals
09:58

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  • Controlling final nanostructures (nanodisk patterns, core/shell, fully alloyed) by varying gold concentration.
  • Characterization using in situ transmission electron microscopy (TEM) and energy-dispersive spectrometry (EDS).
  • Electrical property measurements of the fabricated nanostructures.

    • Main Results:

    • Achieved tunable structural engineering of Au-Ge nanowires, producing diverse morphologies like nanodisks, core/shell, and fully alloyed structures.
    • Identified formation mechanisms through in situ TEM and EDS analyses.
    • Demonstrated distinct electrical properties: metallic for fully alloyed nanowires and semiconducting for alternating Au/Ge nanodisk structures.

    Conclusions:

    • Template-assisted alloying and phase segregation provide a versatile method for engineering nanowire structures.
    • The Au-Ge system is suitable for creating complex nanostructures with tunable properties.
    • The distinct electrical characteristics of the resulting nanostructures open possibilities for their use in electronic devices.