Sound Spotlight 2 (image) University of Sussex Share Print E-Mail Caption How Dr Gianluca Memoli's research could create a directional beam in a commercial setting. Credit University of Sussex. Usage Restrictions To be used only in conjunction with University of Sussex research stories. Share Print E-Mail 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.