Spike (IMAGE) DOE/Oak Ridge National Laboratory Caption The screw-like spikes grown from a spherical silica particle depicted above may alter the internal strength of materials used in industrial coatings, 3-D printing and other additively manufactured objects. Credit ORNL Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.