Abstract
Micro/nano robots have been actively studied. Recently, the micro living organisms, especially flagellated bacteria, have been used as the driving forces for the microobjects. To achieve the more precise control of the position of the bacteria-driven microobjects, we previously proposed the method to assemble single bacterium onto the microobject using optical tweezers, unlike the conventional random and mass attachment. The assembly of the single bacterium onto the 3 tm microbead using optical tweezers was experimentally demonstrated. And, it was confirmed that the bacterium was attached on the microbead firmly by observing the movement of the fabricated bacteria-driven microbead. In this paper, we quantitatively evaluate the movements of the bacterium-driven microobject assembled using optical tweezers. The movements of the bacterium-driven microobject and control sample were analyzed using mean square displacement (MSD).
