carmendrahl writes: 3-D printers don’t build only solid objects anymore. They also build liquid objects, thanks to a research team at the University of Oxford. The group custom crafted a 3D printer to squirt tiny liquid droplets from its nozzles. The 3-D patterned droplets can mimic biological tissues, such as nerve fibers, and may have potential in tissue engineering applications. An expert not involved with the study is cautious about endorsing the tissue engineering applications because they're not yet demonstrated, but praises the team for extending 3-D printing to new classes of materials.