Virtuous Circle
Looks aren’t everything. But in the world of computing, as elsewhere, they mean a lot. Your laptop spends much of its power on its pretty graphic screen display. One reason: The light produced to illuminate a conventional flat-panel display has to be polarized, which means stripping away more than half of the light-the part that’s polarized in the wrong direction-and throwing it away. University of Rochester researchers are developing a new class of materials called liquid crystal glass that, when hit by ultraviolet light, emit circularly polarized light with 99 percent efficiency. Circularly polarized light (in which the direction of polarization constantly rotates) makes for brighter screens with better contrast than current displays. Avoiding the need to discard half the light generated would cut power consumption and thus extend battery life; this efficiency might also enable such technologies as 3-D displays. Kaiser Electronics in San Jose, Calif., is exploring display and eyewear applications of the materials.
Keep Reading
Most Popular
Geoffrey Hinton tells us why he’s now scared of the tech he helped build
“I have suddenly switched my views on whether these things are going to be more intelligent than us.”
Meet the people who use Notion to plan their whole lives
The workplace tool’s appeal extends far beyond organizing work projects. Many users find it’s just as useful for managing their free time.
Learning to code isn’t enough
Historically, learn-to-code efforts have provided opportunities for the few, but new efforts are aiming to be inclusive.
Deep learning pioneer Geoffrey Hinton has quit Google
Hinton will be speaking at EmTech Digital on Wednesday.
Stay connected
Get the latest updates from
MIT Technology Review
Discover special offers, top stories, upcoming events, and more.