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North Carolina State University researchers turn laser beams into a lightsaber-like antenna that sends radio signals without metal and boosts reception by 2.5 times | - The Times of India
Researchers at North Carolina State University have demonstrated a laser-powered plasma antenna that transmits radio signals without a conventional metal radiating element. Resembling a lightsaber, the device uses a laser to ionise air and create a thin plasma filament that transmitted a 30 MHz radio signal during laboratory tests.