A semiconductor-based laser used to generate analog signals or digital pulses for transmission through optical fibers. Both laser diodes and LEDs (light-emitting diodes) are used for this purpose, but ...

PROVIDENCE, R.I. [Brown University] — Superconductors — materials that conduct electricity with zero loss of energy — have been well-understood since the development of what’s called the BCS theory in ...

With an article published in the Proceedings of the National Academy of Sciences in the United States of America (PNAS), a thirteen-year-long mystery that has involved a long series of researchers at ...