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Superhydrophobic Coatings on Microelectronics
Keywords: Superhydrophobic Coatings, Electrical Devices, Circuit Board
Technology Background: Superhydrophobic surfaces effectively repel water, similar to the manner in which liquid mercury rolls off of surfaces. Typical water contact angles for such surfaces exceed 150 degrees. This phenomenon of water droplets beading up on a surface is frequently referred to as the Lotus Effect. The effect is caused by a small air barrier which remains between water and any SH surface. While much research has been done on these surfaces, no one has developed a practical (inexpensive and manufacturable) durable SH coating. ROSS, through its patented technology, has developed highly durable SH coating systems that use a unique combination of polymeric binder systems with a dispersion of particles, providing a coherent structure at the nano size. ROSS coatings show a factor of 200% more Taber abrasion durability than the literature data. A large body of references dealing with factors needed to create hydrophilic and hydrophobic surface exist in the literature. Some of the early scientific references related to hydrophobic surfaces go back to 1936. Many patents dealing with hydrophobic powders and technology also exist and some of the most recent ones are included here. Although scientific basics of hydrophobic surfaces have been known for over 70 years, there has been limited implementation of the technology. The most important factor in lack of implementation of SH technology is the lack of coating durability. The breakthrough research work carried out at ROSS has led to producing SH coatings that are 200% more durable in Taber cycles than any known coatings from literature. We believe that it is this enhanced durability and ease of application that will help in taking advantage of ROSS SH coatings for electrical devices such as motors, switches, electronic circuit boards, and other applications, including corrosion protection, self-cleaning, bacterial reduction and anti-ice formation.
Andrew Jones, President
Ross Nanotechnology, LLC
Leola, PA
USA


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