Sample Jet Stream (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption The frequency at which droplets emerge from the sample jet is controlled by an acoustic trigger, which can be tuned so that each droplet containing a protein or virus meets an incoming pulse of x-rays. Credit courtesy John Spence, ASU 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.