Contents

20 March 2015
Vol 347, Issue 6228

About The Cover

Cover image expansion

COVER Continuous liquid interface production (CLIP) uses a tunable photochemical process to rapidly transform 3D models into physical objects (such as this 9.2-cm-high Eiffel Tower). By balancing exposure of dissolved reagents to UV light, which triggers photopolymerization, and oxygen, which inhibits the reaction, Tumbleston et al. use CLIP to grow objects from a pool of resin at speeds 25 to 100 times faster than traditional layer-by-layer 3D printing. See page 1349.
Photo: Deanne Fitzmaurice