Accelerator on a Chip, Up Close (IMAGE) DOE/SLAC National Accelerator Laboratory Caption The key to the accelerator chips is tiny, precisely spaced ridges, which cause the iridescence seen in this close-up photo. Credit Matt Beardsley, SLAC National Accelerator Laboratory Usage Restrictions Please credit 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.