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Related Experiment Video

Updated: Apr 3, 2026

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures
07:23

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures

Published on: November 14, 2025

549

Light-Induced Surface Patterning of Silica.

Hong Suk Kang, Seungwoo Lee1, Jaeho Choi

  • 1SKKU Advanced Institute of Nanotechnology (SAINT) & School of Chemical Engineering, Sungkyunkwan University (SKKU) , Suwon, 440-746 Korea.

ACS Nano
|September 22, 2015
PubMed
Summary

Researchers developed a novel method to precisely control silica pattern size and shape using light-responsive materials and pyrolytic conversion. This technique enables the creation of intricate silica structures for advanced nanotechnology applications.

Keywords:
azobenzene materialsmicro/nano silica patterningphotofluidizationpyrolytic conversionsilica precursor

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Photochemistry

Background:

  • Precise control over silica nanostructures is crucial for advanced applications.
  • Existing methods for silica pattern fabrication often lack scalability or fine feature control.

Purpose of the Study:

  • To demonstrate a method for manipulating silica precursor patterns using light irradiation.
  • To convert these manipulated patterns into high-fidelity inorganic silica structures.

Main Methods:

  • Utilized an azobenzene-incorporated silica precursor (azo-silane composite) as ink in a micromolding process.
  • Employed far-field light irradiation to control the movement and reconfiguration of azo-silane composite patterns.
  • Converted photoreconfigured azo-silane composite patterns into pure silica via pyrolytic conversion.

Main Results:

  • Achieved arbitrary manipulation of azo-silane composite patterns, enabling control over size and sophisticated shapes.
  • Demonstrated uniform, crack-free formation of pyrolytic converted silica patterns over large areas with high structural fidelity.
  • Established a direct correlation between light irradiation time and the extent of azo-silane composite movement.

Conclusions:

  • The combination of optical manipulation of azo-silane composites and pyrolytic conversion offers a versatile platform for designing silica patterns with tunable features.
  • This technique holds significant potential for applications in micro/nanofluidics, superhydrophobic surfaces, and optoelectronic devices.