Title: Numerical simulation of oblique interaction of bacteria

Biography:

Raimondas Jasevicius has completed his PhD from Vilnius Gediminas Technical University (VGTU) and Post-doctoral studies from Vilnius University, Lithuania. He is a senior researcher, Institute of Mechanics and is an Associate Professor, Department of Department of Mechanical and Material Engineering, VGTU. He has built an adhesive dissipative interaction model after years of experience in research with Otto von Guericke University and Berlin Technical University, Germany. He has more than 18 published articles in reputed journals.

Abstract

Bacteria have a micro-sized diameter, which can give them the ability to adhere to the surface due to the influence of adhesion. In this paper, the attractive-dissipative behaviour of a bacterium with equations for unloading and separation is considered. This amount of energy dissipation can be predicted, for example, from atomic force measurements, using the analysis of the normal force-displacement diagram, which has the character of hysteresis. Here, knowledge of the energy dissipation mechanism is used due to the influence of adhesion from previous studies with ultrafine solids and its application to the cell. The interaction at tangential direction become specific by considering the influence of adhesion. A study of cellular mechanics can help understand the deformation of a biological object or even smaller molecular interaction mechanisms. The specific interaction of bacteria is an important part of the formation of bacterial biofilms, as well as the spread of bacteria in the environment. This theory is suitable for spherical bacteria, while it can be easily applied to colloidal particles. Consideration of the theory of surface change can also be accepted for non-spherical bacteria. The results of a numerical experiment show the ability of bacteria to slip on the surface. Hydrodynamic force is essential for the movement of bacteria and must be considered. In future studies, it is necessary to take into account the interaction of bacteria with biological surfaces, for example, when it moves in a vessel.