Self-Healing Polymer Close-Up (image) DOE/SLAC National Accelerator Laboratory Caption Left: An electron micrograph shows cracks left in a self-healing polymer coating due to swelling of its silicon electrode during charging. Right: Five hours later, the smaller cracks have healed. Credit C. Wang et al, Nature Chemistry Usage Restrictions None 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.