The technology has numerous medical applications from creating organs to helping a little girl move her arms. Those examples all involve relatively large samples though. What can be done about objects that are less than a nanometer in size?
Researchers at the Vienna University of Technology have come up with a new form of 3D printing called “3D Photografting.” The technology allows scientists to attach molecules to an object on the micrometer level. It uses lasers to make sure the molecules attach at exactly the right place.