Ça c'est de la sculpture nanoscopique !
Researchers at the RIKEN Center for Emergent Matter Science introduced a nanosculpting technique that carves three-dimensional devices directly from single crystals, featuring microscopic helices made from the magnetic crystal Co3Sn2S2. The team used a focused ion beam to remove material with submicron precision, producing twisted structures that act as switchable diodes.

Source: trendhunter.com

