Medical 3D Printing & Bioprinting
Using an innovative 3D inkjet printing method, researchers from Chemical and Biological Engineering at the University of Sheffield have developed silk 'Micro-Rockets' which are biodegradable and harmless to biological system. Being just 300 microns in length and 100 microns in diameter, these silk-catalyst made rockets can be used for Drug delivery and locating cancer cells.
Source: http://www.sheffield.ac.uk/faculty/engineering/news/microrockets-1.586767