Custom polymer structures can now be 3D printed inside living cells using laser-based fabrication, opening paths to intracellular sensors, cell tracking tags, and embedded microlasers.

3D printing technology has already transformed the field of biomedical research by allowing scientists to produce soft tissue, replacement windpipes, and working hearts on a whim. But each of these ...

A new twist on two-photon polymerization has been used to deliver objects, including lasers and an elephant, directly into ...