Fig. 5From: A dual electro-optical biosensor based on Chlamydomonas reinhardtii immobilised on paper-based nanomodified screen-printed electrodes for herbicide monitoringA SEM analysis of the paper-SPEs with immobilised CC125 C. reinhardtii. B Storage stability expressed as current signals of algae-paper-SPE sensors stored at 25 °C under light illumination at 50 μmol photons m−2 s−1 (n = 3)Back to article page