Polystyrene Beads (IMAGE) Penn State Caption Dynamic patterning of polystyrene beads (diameter of 1.9 μm) through "acoustic tweezers" technology. The wavelength of the applied standing acoustic wave was 200 micrometers and the power intensity was 2,000 watts per meter squared. Credit Tony Jun Huang, Jinjie Shi, Penn State Usage Restrictions Non-commercial use only 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.