A team of researchers at Harvard’s Wyss Institute for Biologically Inspired Engineering developed an eye-popping new method of 3D printing complex metallic structures in midair. The incredible 3D printing process uses a high-powered laser to anneal nanoscopic particles of conductive metallic inks with no need for any sort of support structures. This laser-assisted direct ink writing method is capable of printing free-standing, microscopic metallic 3D structures using conductive inks composed of silver nanoparticles sprayed through a very fine printing nozzle. A specially programmed laser is used to apply a specific and precise amount of energy that will trigger the ink’s solidification. You can read more about this amazing technology at 3DPrint.com: https://3dprint.com/134771/metal-mid...nting-harvard/