Blocking radio waves and electromagnetic interference with the flip of a switch

https://phys.org/news/2023-01-blocking-radio-electromagnetic-flip.html

"thin film device, fabricated by spray coating... 2D MXene materials, when combined with electrolyte solution, can be turned into potent active shield against electromagnetic waves... prevents emitting electromagnetic waves as well as being penetrated by other electronics' emitted... could adjust performance of electronic devices, strengthen wireless connections and secure mobile communications against intrusion... can be tuned when small voltage (less than alkaline battery) applied"

Related:

New shield blocks electromagnetic interference while allowing wireless optical signals

https://phys.org/news/2023-01-shield-blocks-electromagnetic-wireless-optical.html

Electrospun nanomaterial offers great protection against electromagnetic interference

https://phys.org/news/2023-01-electrospun-nanomaterial-great-electromagnetic.html

New receiver chip blocks signal interference that slows mobile device performance and drains batteries

https://techxplore.com/news/2023-02-chip-blocks-mobile-device-batteries.html