Scientists in Finland have achieved an exciting milestone in wireless electricity transmission, successfully guiding power through the air using ultrasonic sound waves and laser beams. This innovation seems to redefine energy delivery, eliminating the need for traditional cables.
Experts from the University of Helsinki and the University of Oulu have developed a method employing high-intensity ultrasonic waves. These waves create an invisible conduit or a pathway in the air, directing electrical discharges along precise paths and directions. Still in experimental stages, this technology holds potential for seamless, contactless power connections in smart devices and beyond.
On the light side, private companies are also advancing ‘power-by-light’ systems. They beam energy via lasers to remote receivers, with built-in galvanic isolation. This makes it ideal for high-risk settings like nuclear facilities and high-voltage grids.
Meanwhile, radio-frequency harvesting turns ambient air waves into usable power, like ‘Wi-Fi for electricity.’ This could run IoT sensors without disposable batteries, cutting down on environmental waste.
These breakthroughs undoubtedly position Finland at the forefront of a cable-free energy revolution,paving the way for smarter, more flexible infrastructure across industries.
Source: University of Helsinki News, “Wireless Electricity Transmission: Breakthroughs in Acoustic and Laser-Based Power.”
Acadora 