OK, so it is usable on some level in scientific experiments. It's a bit much to claim it on the same level as a scanning-tunneling microscope though, a device designed, built and used exclusively in a scientific setting. Blue LEDs are a product, not a novel instrument. Again: I don't intend to belittle the achievements made, they're revolutionary in their own right, but they are not as scientific in intention as an STM and don't contribute nearly as much to the base line.