Where do you come from? <a href=" http://blog.gngcreative.com/good-philosophy-paper-topics/#sin ">press release writing service</a> What makes piezo-phototronic nanowires so intriguing is that they function as both an input and an output device &#8212; and an incredibly high-resolution input/output device at that. These LED nanowires have a spatial resolution of just 2.7 micrometers (micron), resulting in a pixel density of 6,350 DPI (about the same or better than the resolution of your DSLR&#8217;s CMOS sensor). If you poke the nanowires with your finger, the ridges and whorls on the end of your finger apply different amounts of pressure, causing the LEDs to produce an accurate image of your fingerprint. Likewise, you can imagine a sensor that can simultaneously capture your signature and display it afterward.