Magnetic Snake (image) American Physical Society Caption Alternating magnetic fields create snake-like chains of magnetic particles suspended in fluid. The snakes direct the flow of the surrounding fluid along their lengths, potentially leading to new methods to control fluids in chip-based chemical analysis. (Video clips of the snakes in action are available to journalists on request.) Credit M. Belkin, A. Snezhko, I.S. Aranson, and W.-K. Kwok Usage Restrictions For news and educational purposes only. 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.