Save your data on printable magnetic devices? New laser technique's twist might make this reality

https://phys.org/news/2024-07-printable-magnetic-devices-laser-technique.html

"optical vortex forward transfer laser printing: shine laser on spatial light modulator, through quarter-wave plate converting beam into circularly polarized optical vortex, then focused onto plate with magnetic ferrite nanoparticles... precisely printing, exhibiting helix-like twisted structures whose direction controllable changing optical vortex's helicity to opposite rotation... fine particle patterning, single twisted crystal synthesis... semiconductors, printable magnetic devices for high-density data storage"