e-Flower (IMAGE) Ecole Polytechnique Fédérale de Lausanne Caption The e-flower device consists of four flexible petals equipped with platinum electrodes, which curl around the spheroid when exposed to the liquid that supports the cell structure. This actuation is driven by the swelling of a soft hydrogel, making the device both gentle on the tissue and easy to use. Credit EPFL / Alain Herzog Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. Adaptations must be shared under the same terms. License CC BY-NC-SA 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.