Optical Glass Cleaning
Are you tried of foggy windows on rainy days and glare coming off your TV screen? Scientists at MIT have developed a new process of creating glass that uses surface nanotextures that are self-cleaning and resists fogging and glare. The researchers believe this “multifunctional” glass could improve upon a variety of products from photovoltaic panels to windows and other optical devices.
One of the most instantly recognizable features of glass is the way it reflects light. But a new way of creating surface textures on glass, developed by researchers at MIT, virtually eliminates reflections, producing glass that is almost unrecognizable because of its absence of glare — and whose surface causes water droplets to bounce right off, like tiny rubber balls.
The new “multifunctional” glass, based on surface nanotextures that produce an array of conical features, is self-cleaning and resists fogging and glare, the researchers say. Ultimately, they hope it can be made using an inexpensive manufacturing process that could be applied to optical devices, the screens of smartphones and televisions, solar panels, car windshields and even windows in buildings.
The technology is described in a paper published in the journal ACS Nano, co-authored by mechanical engineering graduate students Kyoo-Chul Park and Hyungryul Choi, former postdoc Chih-Hao Chang SM ’04, PhD ’08 (now at North Carolina State University), chemical engineering professor Robert Cohen, and mechanical engineering professors Gareth McKinley and George Barbastathis.
Photovoltaic panels, Park explains, can lose as much as 40 percent of their efficiency within six months as dust and dirt accumulate on their surfaces. But a solar panel protected by the new self-cleaning glass, he says, would have much less of a problem. In addition, the panel would be more efficient because more light would be transmitted through its surface, instead of being reflected away — especially when the sun’s rays are inclined at a sharp angle to the panel. At such times, such as early mornings and late afternoons, conventional glass might reflect away more than 50 percent of the light, whereas an anti-reflection surface would reduce the reflection to a negligible level.
While some earlier work has treated solar panels with hydrophobic coatings, the new multifunctional surfaces created by the MIT team are even more effective at repelling water, keeping the panels clean longer, the researchers say. In addition, existing hydrophobic coatings do not prevent reflective losses, giving the new system yet another advantage.
Other applications could include optical devices such as microscopes and cameras to be used in humid environments, where both the antireflective and anti-fogging capabilities could be useful. In touch-screen devices, the glass would not only eliminate reflections, but would also resist contamination by sweat.
You might also like
Wisdompro 12 Pieces Pack of Microfiber Cleaning Cloth For Camera Optical Lenses, Glasses, Cell Phones, iPhones, iPads, Tablets, Laptops, LCD TV / Computer Screens / Monitors and other Sophisticated Surface (4-3/4 x 4-3/4 Inch)
Zimmer Holdings Announces Live Audio Webcast and Conference Call of Third .. — CNNMoney
A news release detailing the quarterly results will be made available at 7 a.m. Eastern Time the morning of the conference call. ZIMMER, INC. ..
Clean Screen Wizard Microfiber Cleaning Cloth 6 Pack In Vinyl Pouches - For iPad, Eyeglasses, iPhone, Tablets, Smart Phones, Laptops, TV Screens And Delicate Surfaces with Microfiber Cleaner Sticker (1 White Large, 3 Black & 2 Blue Medium)
CE (MooJou Enterprises)
(6 Pack) MagicFiber® Premium Microfiber Cleaning Cloths - For Tablet, Cell Phone, Laptop, LCD TV Screens and Any Other Delicate Surface (5 Black, 1 Grey).
Eurow Microfiber Glass Cleaning Towel, 14in X 14in (2 Pack)
Automotive Parts and Accessories (Eurow & O'Reilly Corp.)
e-cloth Glasses Cleaning Cloth