Dust Grid Breakup (IMAGE) American Physical Society Caption Figure 2: Breakup of the dust grid structure is observed as the background neutral pressure is increased from low to high pressure. Each image is a sum of over 100 individual picture frames to reveal the motion of the dust particle trajectories. With increasing pressure the particles "unlock" from the grid generated crystal and begin to flow, first from lattice site to lattice site, and then forming a swirling pattern at high pressure. The yellow boxes show close-ups of the observed particle pattern at different pressures for the area highlighted in the left figure. Credit Thomas Auburn 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.