(IMAGE) Saarland University Caption Smart films can now be used as a new type of speaker driver, replacing the electromagnets or permanent magnets that drive the loudspeaker membranes in conventional speaker systems. But the film can also be made to generate acoustic tones – essentially turning it into its own loudspeaker. Sophie Nalbach conducted research into these smart polymer films as part of her doctoral thesis in Professor Stefan Seelecke's group. Credit Credit: Oliver Dietze Usage Restrictions The press photograph can be used free of charge with this press release or in connection with reports about Saarland University provided that a photo credit with the photographer’s name is included. License Original 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.