Our nation’s official keepers of time and other standards are breaking one of the cardinal rules: They have figured out how to make superluminal light pulses. This paradoxical sentence — faster-than-light light — is from a new paper explaining how to make the sine wave of light hunch in on itself and arrive a few nanoseconds earlier than it would if it had moved at light speed.
Electronic devices could get much more sophisticated with new diode technology that allows electrons to move around more quickly. Two groups of researchers are reporting advances in diode performance through new manufacturing processes — one uses a metal-insulator-metal system and another uses metamaterials to work with electromagnetic waves. The new systems could yield a new approach to electronics, researchers say.