As seems to be the case each year, one or two stars show up to demonstrate new technology here at the All Things D 'Science Fair,' and it just so happens that a pair from the University of Pennsylvania are soaking up the limelight this go 'round. uBeam's the company, and based on what we saw at D9, we're guessing that you'll be hearing an awful lot more from the duo in the coming months. The company's mission is to provide wireless power -- hardly a new concept, but it's all sorts of refreshing to see what's often thought of as a