Fig. 1From: A dual electro-optical biosensor based on Chlamydomonas reinhardtii immobilised on paper-based nanomodified screen-printed electrodes for herbicide monitoringDual electro-optical transducer prototype (A) for the measurement of the chlorophyll a fluorescence (B) and for the measurement of the current signals of algae under light illumination (C)Back to article page