Development of the moving electrodes for the bioelectric potential measurement on the leaf

In this study, two types of biological potential measuring system have been designed and established in order to bring a detailed sight on the biological information system. In the first system, two types of movable electrodes were developed to detect the potential changes on the leaf surface at a micro-scale level. These movable electrodes can be resiliently engaged onto the leaf geometry and are able to perform a multiple and simultaneous potential measurements at 1 and 2 mm pitch. They are also assisted with a pre-amplifier which can correspond to any fluctuation in impedances of each electrode. The second system is related to measuring system which an insertion depth of a micro-electrode into the leaf to be observed can be arbitrarily controlled by moving a micro-electrode in order to investigate a correlation between the leaf surface potential and intracellular potential of the leaf.