A canopy of solar cells, a nearly classroom-free academic center, cafes open to the public and even a hotel. The new campus of the Cornell University graduate school for technology is expected to transform Roosevelt Island from a sleepy bedroom community into a high-technology hothouse, and indeed, the plans to be formally unveiled for the campus bear little resemblance to anything that is there now, reports the New York Times. The campus, at the southern end of Roosevelt Island, is to be built in two phases. The first phase, the bulk of which consists of a low-slung academic hub and a taller residential building just south of the Queensboro Bridge, has a projected opening in 2017…