Schematic of the Film (IMAGE) Nagoya University Caption Schematic of the film (left): The film is mostly composed of a non-photoresponsive polymer (200 - 400 nm thick), and a photoresponsive polymer layer exists only at the surface (some nm thick). Photograph of the films and surface shape after UV radiation through a photomask (right). Credit Issei Kitamura / Springer Nature 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.