The Study Of Flagellar Bacteria Swimming Mechanism And The Model

In nature, the motion of species is diverse and various. Flagellar bacterium is the simplest life. The study of bacterial flagella swimming mechanism is a challenging project at low Reynolds number. The study of bacterial flagella belongs to nanorobotics. It is an important frontier branch in bionomic robotics fields. The research and development of bio-mimetic bacterial flagella mechanism will not only have a wide application in minimally invasive surgery (MIS), highly localized drug delivery, DNA operation, and nano-sensor areas, but also in macro swimming robot of low Reynolds number which is used for detective and succor works.The main study of this paper on bacterial flagella is as followings:1. Flagellar bacterium structure and special swimming mechanismIntroduce the three components of flagellum: motor, hook, and filament. The mode of the bacterial motions consists of run and tumble. So the problems, which include the principle of bacterial flagellar bundling, wall effect, and the relationship between polymorphic transitions during swimming motion, are discussed.2. The study of bacterial flagellar bundlingConstruct the model of left-handed helical filament built on multi triangular prisms which are connected by springs. The cutoff function is used to eliminate the singularities of Stokeslets and rotlets, which are derivated according to Navier-Stokes equation of Stokes flow theory. The motion of bacterial flagella is analyzed by using the two functions. The relations among driving torque, spring constant, regularized parameters,...