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Related Experiment Video

Updated: Jun 26, 2026

Metal-Assisted Electrochemical Nanoimprinting of Porous and Solid Silicon Wafers
09:18

Metal-Assisted Electrochemical Nanoimprinting of Porous and Solid Silicon Wafers

Published on: February 8, 2022

Subsurface oxidation for micropatterning silicon (SOMS).

Feng Zhang1, Ken Sautter, Robert C Davis

  • 1Department of Chemistry, Brigham Young University, Provo, Utah, USA.

Langmuir : the ACS Journal of Surfaces and Colloids
|January 13, 2009
PubMed
Summary

A new silicon micropatterning technique called subsurface oxidation for micropatterning silicon (SOMS) uses plasma oxidation and etching. This straightforward method offers potential industrial viability for creating silicon microfeatures.

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Area of Science:

  • Materials Science
  • Surface Engineering
  • Microfabrication

Background:

  • Precise patterning of silicon is crucial for microelectronics and nanotechnology.
  • Existing methods can be complex or require specialized equipment.

Purpose of the Study:

  • To introduce a simple and effective silicon micropatterning technique.
  • To investigate the parameters influencing the subsurface oxidation process.

Main Methods:

  • Subsurface oxidation for micropatterning silicon (SOMS) using a stencil mask and radio-frequency plasma oxidation.
  • Subsequent etching with hydrofluoric acid (HF) or potassium hydroxide (KOH).
  • Characterization using atomic force microscopy (AFM), scanning electron microscopy (SEM), and optical microscopy.

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Last Updated: Jun 26, 2026

Metal-Assisted Electrochemical Nanoimprinting of Porous and Solid Silicon Wafers
09:18

Metal-Assisted Electrochemical Nanoimprinting of Porous and Solid Silicon Wafers

Published on: February 8, 2022

Soft Lithographic Functionalization and Patterning Oxide-free Silicon and Germanium
12:38

Soft Lithographic Functionalization and Patterning Oxide-free Silicon and Germanium

Published on: December 16, 2011

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

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Main Results:

  • Successfully patterned silicon surfaces with varying oxide thicknesses.
  • Achieved shallow features with HF etching and high aspect ratio features with KOH etching.
  • Demonstrated the influence of oxygen pressure, power, time, and purity on the oxidation process.

Conclusions:

  • SOMS is a straightforward and accessible technique for silicon micropatterning.
  • The method is adaptable for creating diverse microscale features.
  • The technique shows promise for industrial applications due to its simplicity and effectiveness.