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Transparent superwetting nanofilms with enhanced durability at model physiological condition.

Sunghee Hwangbo1, Jiwoong Heo1, Xiangde Lin1

  • 1School of Chemical Engineering and Material Science, Chung-Ang University, Seoul 156-756, Korea.

Scientific Reports
|January 15, 2016
PubMed
Summary

Researchers developed durable superwetting nano-films using organosilicate and polymeric silsesquioxane. These robust films maintain superhydrophobicity even when outer layers are damaged, overcoming fragility issues in nanoscale superwetting surfaces.

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Area of Science:

  • Materials Science
  • Surface Chemistry
  • Nanotechnology

Background:

  • Superwetting surfaces offer diverse applications but often suffer from fragile microscopic roughness, limiting their use in demanding environments.
  • Existing research on durable nanoscale superwetting films, especially for extreme conditions, remains limited.
  • The fragility of the nanoscale roughness is a key challenge for the practical application of superwetting surfaces, particularly in biomedical fields.

Purpose of the Study:

  • To fabricate intrinsically stable superwetting films with controlled nano-sized roughness.
  • To enhance the mechanical and chemical robustness of superwetting nano-films.
  • To investigate the durability and stability of the fabricated superwetting films under challenging conditions.

Main Methods:

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  • Utilized the organosilicate-based layer-by-layer (LbL) self-assembly method.
  • Incorporated polymeric silsesquioxane as a building block for LbL assembly to create robust multilayer structures.
  • Controlled the nano-sized roughness of the multilayer films through the LbL process.

Main Results:

  • Successfully fabricated intrinsically stable superwetting nano-films with controlled nano-sized roughness.
  • Developed mechanically and chemically robust surfaces by introducing polymeric silsesquioxane.
  • Demonstrated that the films maintained superhydrophobicity even after damage to the outer layers due to the hydrophobic nature of inner layers.

Conclusions:

  • Organosilicate-based LbL assembly with polymeric silsesquioxane is an effective method for creating durable superwetting nano-films.
  • The fabricated films exhibit enhanced robustness and stability, addressing the limitations of fragile superwetting surfaces.
  • These intrinsically stable superwetting nano-films show promise for applications requiring durability in extreme environments.