Gizmodo

Ni-Mn-Ga melt-extracted fibers with an approximate diameter of 100 µm showing a bamboo-type structure (imaged with a backscattered electron detector in an FEG-SEM). Melt-extraction is a unique and novel method to prepare single-crystalline particles for magnetic shape memory composites. (Image: Oliver Gutfleisch, IFW Dresden, Institute of Metallic Materials, Dresden, Germany)