Spray-on anti-soiling coatings that exhibit high transparency and mechanical durability

Daniel A. Schaeffer; Georgios Polizos; D. Barton Smith; Dominic F. Lee; Slobodan Rajic; Panos G. Datskos; Scott R. Hunter

doi:10.1117/12.2053387

29 May 2014 Spray-on anti-soiling coatings that exhibit high transparency and mechanical durability

Daniel A. Schaeffer, Georgios Polizos, D. Barton Smith, Dominic F. Lee, Slobodan Rajic, Panos G. Datskos, Scott R. Hunter

Author Affiliations +

Proceedings Volume 9074, Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense XIII; 90740C (2014) https://doi.org/10.1117/12.2053387
Event: SPIE Defense + Security, 2014, Baltimore, MD, United States

Abstract

A superhydrophobic (SH) surface has many characteristics, one of which is its self-cleaning, anti-soiling functionality, that are desirable across various industries. A transparent, self-cleaning surface utilizes the right combination of surface chemistry and roughness that force water droplets to form high water contact angles (CA). This in turn allows droplets to easily roll off and pick up dirt and debris across the surface. In theory this is simple but in practice this can be very difficult as superhydrophobicity and optical transparency are competitive. We have developed a simple, spray-on coating based on functionalized SiO₂ nanoparticles that can easily be applied to surfaces whose application requires high transparency including, but not limited to, optical sensors, photovoltaics, sights, and lenses. In addition, these coatings exhibit practical mechanical and environmental durability that allow prolonged use of the coatings in harsh environments.

Citation Download Citation

Daniel A. Schaeffer, Georgios Polizos, D. Barton Smith, Dominic F. Lee, Slobodan Rajic, Panos G. Datskos, and Scott R. Hunter "Spray-on anti-soiling coatings that exhibit high transparency and mechanical durability", Proc. SPIE 9074, Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense XIII, 90740C (29 May 2014); https://doi.org/10.1117/12.2053387

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