In this project, AlchLight introduces a far superior approach to produce high-performance anti-fog transparent superhydrophobic polycarbonate for spacesuit helmets using our pioneered femtosecond pulsed laser surface patterning 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, AlchLights 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 × 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 AlchLights success in this NASA project. Anticipated
Benefits: Our highly transparent anti-fog superhydrophobic surfaces can be used for visors of various types of helmets and face shields, covers for sensors and detectors, covers for NASAs cameras, telescopes, and crucial equipment, and covers for solar panels on spacecrafts. In the auto industry, covers sensors and detectors for self-driving vehicles. In the medical industry, endoscopes and surgical face shields. In sports, ski goggles, face protection, and diving equipment. In commercial electronics, camera lenses, and electronic displays. For scientific equipment, lens, microscopes, and telescopes.
