Researchers there have developed a method to 3D print small metallic structures in mid-air, creating relatively complex freestanding objects with no support material. Ink made of silver nanoparticles is sent through a printing nozzle, then solidified instantly by a carefully calibrated laser that delivers precisely the right amount of power.
The technique allows for organic curves and spirals to be ‘drawn’ in mid-air, as well as sharp changes of direction and angular turns. According to its creators, the technology has a range of potential applications, including wearable electronics and biomedical devices.
Guest blog: exploring opportunities for hydrogen combustion engines
"We wouldn't need to pillage the environment for the rare metals for batteries, magnets, or catalisers". Batteries don't use rare...