Bionic contact lenses—which would display navigation data, personal emails, or any other sort of info superimposed on the world before your eyes—have long been mainstays of science fiction. Over the past several years, researchers have been working to make the tech real-world ready, striving to find solutions to the energy, size, safety, and image-quality problems that come up when you’re trying to fit a tiny integrated circuit into something transparent that sits on an eyeball.
Now, University of Washington researchers and their Finnish colleagues have made the first functioning bionic lens: a prototype with a single LED pixel, which could be safely worn by rabbits in the lab. (The image at right shows a rabbit wearing an earlier version of the lens, which contained a circuit but no light-emitting components.) Radio frequency energy emitted from a nearby transmitter and picked up by a circular antenna a fifth of an inch in diameter, printed on the lens, powered the electronics. The transmitter supplied adequate energy from three feet away when the lens was sitting in a dish, but had to be less than an inch away when the lens was placed on a rabbit’s eye, since tissues and fluids in the body interfered with reception. Since light from such a lens would be too close for the human eye to focus, the researchers made a separate contact composed of an array of smaller, flatter lenses, which would sit on top of the bionic contact and focus the light.
What’s the News: Researchers have found high concentrations of rare earth metals, essential materials for making nearly all high-tech electronics, in mud on the floor of the Pacific Ocean, according to study published online earlier this week in Nature Geoscience. These huge deposits could help satisfy ever-increasing demand for rare earth metals, but there are major questions about the economic viability and ecological effects of mining the seabed.
What’s the News: Lytro, a Silicon Valley start-up, has designed a camera that lets you shoot first and focus later. The camera captures the far more light and data than traditional models, and comes with software that lets you focus the photo, shift perspective, or go 3D after you’ve taken the photo. The company plans to sell a consumer, fits-in-your-pocket model by the end of the year.
What’s the News: Smart clothes might soon be coming into bed with you. A company is developing shirts endowed with a chip that senses the changes in breathing that accompany shifts in sleep phase, to help people track how variables like exercise, coffee intake, and stress affect their sleep.