Not to get all scientific on you or anything, but a team of Imperial physicists have just figured out a way to use plastics in laser diodes
. For the uninitiated, scientists have been unable to make plastic semiconductor laser diodes because they had not yet found / developed "any plastics that could sustain a large enough current whilst also supporting the efficient light emission needed to produce a laser beam." Now, however, that obstacle has reportedly been overcome by making minor tweaks to a given plastic's chemical structure, and the resulting material will transport charges some 200 times better than before without impeding its ability to emit light. By the sound of things, the crew behind the breakthrough isn't quite ready to offer up the solution to manufacturers, but with a bit more work, we suspect that notion will change.