Colloidal Crystal (IMAGE) DOE/Argonne National Laboratory Caption Argonne scientists have used small particles as electron equivalents to create metallic behavior in colloidal systems primarily composed of larger particles. These small particles could act as messengers, carrying information or other molecules over distances. Credit Byeongdu Lee / Argonne 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.