Tag: electromagnetic waves
A wireless, battery-free world: how do we power it?
Our digital world depends on the interconnectivity between wireless devices, often battery-free with no direct power supply. Such devices include wireless passive sensors, designed to receive and respond to signals from the environment. These devices can be powered by electromagnetic waves, provided their antenna can efficiently convert waves to energy. By employing optimisation algorithms and introducing a more accurate measure […]
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A long-awaited understanding of the Casimir torque
The Casimir force has been well researched by physicists for decades, but only recently has one particularly intriguing aspect of this effect been recreated in the lab. Through his research, Dr Wijnand Broer at the University of Chinese Academy of Sciences has built upon these recent breakthroughs to explore the processes which cause the surfaces of some specialised materials to […]
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