electrochromic
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Researchers develop cheaper, more flexible smart glass
Thanks to the work of a team of researchers at the University of Texas, Austin's Cockrell School of Engineering, your next car windshield or apartment window could have an efficient, low-cost way of electronically controlling its tint, while also keeping your heating and cooling bills in check. According to a release from the University of Texas, associate professor Delia Milliron and her team of chemical engineers have invented "a new flexible smart window material" that can lighten or darken with a small electric charge and can easily be applied with a new low-cost, low-temperature process.
Ricoh's new electronic paper promises greater brightness, enhanced color
Color E Ink technology still has some kinks to work out, but Ricoh thinks it may have just taken a big step forward with its latest display. The company's electronic paper, introduced at SID this week, promises to reproduce images that are 2.5 times brighter than competitors' offerings, while covering a color range that's four times wider. To achieve this, Ricoh used a simple lamination method, layering three strips of electrochromic material between two substrates. Unfortunately, however, there's no indication that the technology will be commercially available anytime soon, as Ricoh still needs to incorporate its e-paper onto more practical screen sizes, as well as enhance the display's durability -- both of which sound like pretty major hurdles to us. Full press release after the break.
Auto-dimming electrochromic panels reduce glare when driving (video)
It's rush hour, and you're headed due West on your evening commute -- the sun burning holes in your eyes. You could flip down a window visor, trading your field of view for visibility. Or, with a prototype shown off at Intel's 2010 International Science and Engineering Fair, you could simply let the windshield darken on its own. Two San Diego students (both accustomed to copious amounts of sunshine) rigged a Toyota Prius to do just that by stringing up electrochromic panels, which dim when voltage is applied. The trick is figuring out when and where to apply it, because when the sun is shining the panels themselves all receive the same amount of light. So instead of gauging it at the glass, Aaron Schild and Rafael Cosman found that an ultrasonic range finder could track the driver's position while a VGA webcam measured the light coming through, and darken the sections liable to cause the most eyestrain. We saw a prototype in person, and it most certainly works... albeit slowly. If you're rearing to roll your own, it seems raw materials are reasonably affordable -- Schild told us electrochromic segments cost $0.25 per square inch -- but you may not need to DIY. Having won $4,000 in prize money at the Fair, the teens say they intend to commercialize the technology, and envision it natively embedded in window glass in the not-too-distant future. Here's hoping GM gives them a call. See pics of the Prius below, or check out a video demo of their prototype right after the break. %Gallery-93034%
Ricoh develops brighter, lighter, color e-paper
It's been a few minutes since we've heard any news regarding color e-paper, and now Ricoh has announced that they've taken a tip from their copier business to create a technology that displays hues fifty percent brighter than those currently available, retaining the graphics even when power is turned off. Unlike other technologies, which use layers of red, green, and blue light separated by sheets of glass, this new iteration uses layered electrochromic compounds that turn cyan, magenta, and yellow variously when electricity is applied -- and if that weren't enough, the company's gone and altered the molecular structure of the compounds to retain their color even when electricity is removed. Rather than using glass, the layers are separated by some sort of clear insulation, resulting in a lighter device and a brighter appearance. The company is looking to bring this to market within the next five years. [Warning: read link requires subscription.]
Electrochromic sunglasses change color on demand
We'll admit, we didn't think MyDo's Bururu vibrating spectacles would be topped anytime soon, and while the University of Washington's smart sunglasses don't snatch the crown outright, they certainly make a solid case. The admittedly gaudy prototype certainly isn't the most attractive eyewear we've ever seen, but researchers are insisting that we focus on the electrochromic material that enables on demand color / tint changing rather than the bulky frames. The film can purportedly alter its transparency depending on the electric current that flows through it, essentially giving athletes and motorists an easy way to instantly adjust the level of reflection and tint depending on the ever-changing circumstances around them. Touted as "more active and more intelligent" that existing specs, this watch-battery-powered device allows the wearer to alter the shade by simply spinning a wee dial on the arm, and while we wish we could tell you that U-Dub's swank new specs would be arriving before the bright summer rays, it'll be quite "a few years" before these hit commercialization.[Via Primidi]
