Anti-reflective coating
Inspired by rose petals, an anti-reflective coating has been developed by Phytonics (Eggenstein-Leopoldshafen, Germany; www.phytonics.tech), a spinoff from the Karlsruhe Institute of Technology (KIT; www.kit.edu). Introduced at last month’s (virtual) Hannover Messe (April 12–16; Hannover, Germany), the film is the result of more than seven years of research and development work. With its combined micro- and nanostructure, it replicates the epidermis of rose petals over a large area. It almost completely suppresses reflection for all wavelengths and angles of incidence of the light. This makes it far superior to conventional anti-reflective coatings, the company says.
The Phytonics film is said to increase the yield of solar modules by up to 10%. Posters, display panels, traffic signs, furniture, packaging, facades and many other applications can also benefit from this technology. The film provides an anti-reflective coating for all kinds of surfaces and gives them a “noble velvety” appearance. Because the Phytonics film is mechanically flexible, it is also suitable for curved surfaces. It is dirt-repellent and highly resistant to environmental influences, such as ultraviolet (UV) light, moisture and temperature fluctuations, the company says. It is manufactured using a cost-effective roll-to-roll printing method and can be applied to all types of materials using standard lamination processes.