You might be pretty proud of your iPhone 4's Retina Display, and those teensy pixels 4x smaller than the already good-looking usual Apple displays. Or maybe you're looking forward to seeing the Retina installed in some of Apple's other products at the event later this week. But like most consumer electronics these days, that display isn't quite state-of-the-art. Researchers at the University of Michigan have created a display with nanometer-thin sheets of metal (called nanoresonators) that use slits to create pixels eight times smaller than the pixels currently on the iPhone 4. To show off their work, the University of Michigan researchers created their school's logo on a display only 9 microns tall (a strand of human hair is about 100 microns wide, so the display itself could fit inside the period at the end of this sentence).
Crazy. You have to wonder what an iPhone-sized display would look like with a resolution like that (or if we'd even tell the difference, given that our eyes have a limit on the amount of detail they can discern). Obviously, this is strictly a research project at this point -- creating all of the "nanoresonators" required to make a fullsize display would probably cost a lot more than the iPhone 4 actually does. Maybe it's something to look forward to for the iPhone 5, 6 or 7.