Convenient wireless charging for home use

https://techxplore.com/news/2022-03-convenient-wireless-home.html

"The key to the new design is a cylindrical power coil. The wire at the top of the coil is wound in the opposite direction to the wire at the bottom of the coil, with a z-shaped bridge connecting them... This results in an even magnetic field around the middle of the charging coil. Receivers placed anywhere within that area charge efficiently, regardless of their position or orientation... This was just a proof of concept... Now we can work to improve the efficiency—maybe to around 90% – and also the power"

Related:

Study conceptualizes energy efficient, wireless charging roads

https://techxplore.com/news/2022-07-energy-efficient-wireless-roads.html

Engineers use radiation suppression to develop better wireless charging

https://techxplore.com/news/2023-07-suppression-wireless.html