Non-coating laser-nanostructured superhydrophobic transparent polycarbonate for anti-fog spacesuit helmets

In this project, AlchLight introduces a far superior approach to produce high-performance anti-fog transparent superhydrophobic polycarbonatenbsp;for spacesuit helmets using our pioneered femtosecond pulsed laser surface patterningnbsp;technology. Without relying on chemical coating, our laser patterning permanently alters the intrinsic wetting property of polycarbonate without compromising its transparency. In this Phase I, AlchLightrsquo;s goal is to produce a superhydrophobic polycarbonate surface with a contact angle greater than 150o, a sliding angle smaller than 10o, and a transmittance greater than 70% over the visible wavelengths. We will perform a range of tests to demonstrate the applicability of the superhydrophobic polycarbonate in a spacesuit helmet environment through the steam cycle, adhesion, and cleaning tests. Five treated flat samples at a size of 1 inch times; 1 inch will be delivered to NASA for further testing.AlchLight has a robust customer base and an outstanding technology transition track record, currently standing at a 100% success rate beyond SBIR Phase II. Particularly, AlchLight is a technological leader in developing non-coating based superhydrophobic polymers and glass. Currently, AlchLight is helping a number of key industrial customers in creating anti-fog and anti-icing polymer covers for protecting the sensors and detectors of self-driven vehicles. Our unparallel technological know-how and extensive industrial involvement in solving this very issue of creating superhydrophobic transparent glass and polymers will guarantee AlchLightrsquo;s success in this NASA project.