Abstract
In this paper, we investigated to drive a seesaw by automatically position controlled downward flow of the Euglena's bioconvection. The position of the downward flow was controlled by applying Euglena's phototaxis to the scanning blue laser beam. Formally, we succeeded to drive a seesaw by electrically position controlled downward flow of the Tetrahymena's bioconvection. In this paper, we aimed to reproduce the laser control version of this seesaw driving by using Euglena. We have already confirmed that if the experiment is done in the horizontal planar pool, we could make any shapes of Euglena group and we could also assemble simple mechanical parts by pushing the part by Euglena group. And in the vertical pool, controlling position of the bioconvection downward flow was done by irradiating from top surface by scanning blue laser. We succeeded to drive the seesaw by this method. In this study, we investigated the automatic laser controlling algorithm for driving seesaw. At first, we developed algorithm considering the position of the blue laser and the angle of the seesaw. Although driving the seesaw itself was succeeded, driving frequency was less than manual controlling. Therefore, we changed the algorithm that assumes the position of the bioconvective downward flow from the RGB values of the experimental images in the pool for controlling the laser position. By this new algorithm, we succeeded to drive the seesaw faster than the former algorithm and close to the driving time in manual controlling.
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