Precious Metal Crystals (IMAGE) DOE/Pacific Northwest National Laboratory Caption Left, an electron micrograph (TEM) of a metal, in this case platinum, deposited on cellulose. Inset, crystalline cellulose without metal. Right, TEM showing the pattern of platinum clustering along hydroxyl sites on the cellulose surface. Credit Pacific Northwest National Laboratory 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.