Different Particle Assemblies (IMAGE) Institute for Basic Science Caption A variety of different particle assemblies can be created by adjusting the number of particles compared with tube length (a~e) and sometimes the rotational rate of the tube (f). Credit IBS 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.