Physicists have achieved a breakthrough in magnetic field shielding, creating an “antimagnet” that can hide magnetic fields from detection. The device, developed jointly by Spanish and Slovakian scientists, uses a high-temperature superconductor and a ferromagnetic alloy to create a double cylinder that shields the interior from external magnetic fields. The team is particularly proud that they did not need to develop any new materials for the prototype, which is the size of a thimble. The device is effective against magnetic fields of up to 40 millitesla and does not need to be adjusted for different frequencies.
The scientists spent six months simulating the device on a computer before constructing the prototype. They are currently investigating the effect of different magnetic fields on the device and have modified the cylinder to prevent the high-temperature superconductor from being affected by external magnetic fields. The modified cylinder is made of an iron-chromium-nickel alloy that allows magnetic field lines to spread around the cylinder almost unchanged. The team is excited about the potential applications of the device, which could be used in sensitive electronic devices such as pacemakers, aircraft electronics, and computers.
The size and shape of the antimagnet can be customized to suit different needs. The scientists are optimistic about the future of the device and believe it could have a significant impact on a range of industries. The breakthrough is a significant step forward in the field of magnetic field shielding and could lead to further developments in the future.
