Electromagnetic vortex cannon could enhance communication systems

[Grim Reaper 6]

The creation of air vortices is a captivating blend of science and aesthetics. When an air cannon fires, the instantaneous pressure difference causes the air to form a rotating ring structure that propagates steadily through the air, showcasing the unique shape and dynamics of the vortex. Applying the same principle to electromagnetic waves, we can envision an "electromagnetic vortex cannon" that directly emits electromagnetic vortex rings. Thanks to the dedicated efforts of researchers, this concept is gradually becoming a reality.

Recently, Associate Professor Ren Wang from the University of Electronic Science and Technology of China, Assistant Professor Yijie Shen from Nanyang Technological University in Singapore, and their collaborators from the University of Southampton in the UK proposed a method using coaxial horn antennas to directly emit electromagnetic vortices. They observed the resilient propagation characteristics and skyrmion topological structures of these vortices..

https://phys.org/news/2024-08-electromagnetic-vortex-cannon-communication.html

[Alchopwn]

The ring structure is called a "torus" or "torroid" btw.