So there you are, zipping around the Qwik-E-Mart, picking up a dozen eggs, some beer, a carton of Abba Zabba and some smokes. You pull up to the checkout stand and your bill is already waiting for you. While you’ve been shopping, tags on your goods have been chatting with the store’s cash register, tallying your total. That’s the scenario in play with a new RF (radio frequency) technology being developed at the University of Arizona Optical Sciences Centre, which uses organic semiconductors that live on thin plastic films. As reported by Beyond2000, the centre recently acquired a deposition machine that can make such films, depositing layers of organic molecules 10 to 100 nanometers thick onto a plastic substrate. Look for real world uses in the next couple years. And leave the cigarettes behind; they’re bad for you.
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