An international team of scientists led by Cambridge University’s Cavendish Laboratory has used 3D printing technology to develop a novel set of microscopic nanomagnets. Created using a custom 3D printing process, the nanomagnets are in the shape of a DNA-inspired double helix. According to the research team, this unconventional structure lends itself to strong magnetic field interactions between the helices in a manner never seen before. Specifically, by twisting around one another, the 3D printed helices produce nanoscale topological textures in the magnetic field they generate. The team believes it can harness this phenomenon to closely control magnetic forces at the nanoscale, paving the way for ‘next generation’ magnetic devices. Claire Donnelly, first author of the study, explains, “This new ability to pattern the magnetic field at this length scale allows us to define what forces will be applied to magnetic materials and to understand how far we can go… read more