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This study introduces a cost-effective dust mitigation method for glass surfaces using hydrofluoric acid treatment and an avalanche effect. This approach significantly enhances dust removal efficiency and improves optical transmittance.

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Area of Science:

  • Materials Science
  • Surface Chemistry
  • Environmental Engineering

Background:

  • Dust accumulation on surfaces poses challenges in various sectors, impacting performance and aesthetics.
  • Reducing dust adhesion is crucial for effective dust mitigation, especially under gravitational forces.
  • Current methods often lack cost-effectiveness or efficiency in complete dust removal.

Purpose of the Study:

  • To investigate a cost-effective method for dust mitigation on glass surfaces.
  • To evaluate the efficacy of hydrofluoric acid solution treatment in reducing dust adhesion.
  • To explore the 'avalanche effect' for enhanced dust removal rates and efficiency.

Main Methods:

  • Glass surfaces were treated with low-concentration hydrofluoric acid to reduce dust adhesion.
  • An 'avalanche effect' was created using larger, denser particles (5300 kg/m³, ~50 µm) placed above smaller dust particles (2800 kg/m³, 1.2 µm).
  • Dust mitigation velocity was measured using high-speed recording and tracking software; tilt angles were analyzed.

Main Results:

  • Hydrofluoric acid treatment formed non-harmful fluorine compounds (CaF₂, MgF₂) on dust, suppressing adhesion.
  • The avalanche effect reduced the critical tilt angle for dust mitigation from 63° to approximately 52°.
  • Solution-treated dust showed greater area cleaned and improved optical transmittance by 98% under avalanche influence.

Conclusions:

  • Hydrofluoric acid treatment combined with an avalanche effect offers an efficient and cost-effective dust mitigation strategy for glass.
  • The formation of specific fluorine compounds significantly reduces dust adhesion.
  • This method demonstrates potential for improving the performance and longevity of surfaces prone to dust accumulation.