Do cellular lasers sound trivial? They're not. Consider:
Aside from implying the future possibility of a self-healing laser that requires no battery, this breakthrough could allow doctors and scientists to view the inner workings of individual cells without a microscope.I instantly thought of an application not mentioned in the article: laser-based communications among medical nanobots. Visible light spans the wavelengths from about 380 to 780 nanometers -- while cells (and cell-sized machines, once we have them) are of the scale several thousand nanometers. Had cell-based lasers been thought possible a few years ago, I might well have used them for the nanobots in Small Miracles. (Instead I used chemical signaling -- just as natural cells do.)
The next topic is scary, but the headline is ironic: "LightSquared Network Faces Interference of Its Own Making."