컨텐츠 시작
학술대회/행사
초록검색
| 제출번호(No.) | 0207 |
|---|---|
| 분류(Section) | Special Session |
| 분과(Session) | (SS-21) Recent Progress in Mathematical Biology (SS-21) |
| 발표시간(Time) | 19th-B-13:00 -- 13:20 |
| 영문제목 (Title(Eng.)) |
Computational model of a swimming microswimmer inspired by bacteria |
| 저자(Author(s)) |
Wanho Lee1 NIMS1 |
| 초록본문(Abstract) | We introduce a computational model of a microswimmer inspired by the swimming mechanisms of peritrichous bacteria, such as E. coli, capable of executing run and tumble behaviors through the counterclockwise (CCW) or clockwise (CW) rotation of its flagellar motors. The 'run' phase is characterized by a directed motion propelled by synchronized flagellar activity, while 'tumble' refers to a cell's reorientation triggered by the reversal of some motors from CCW to CW rotation. Our simulations in an unobstructed viscous medium highlight the significance of the hook's material properties and the cell body's counter-rotation for effective flagellar bundling. We observe that elongated hooks in modified cell designs induce mechanical instability, disrupting the flagellar assembly and consequently limiting mobility. Furthermore, when encountering a planar boundary, our microswimmers demonstrate the ability to navigate near-surface environments through diverse tumbling actions. Notably, variations in the duration of tumbling events enable the microswimmer to cover a broad spectrum of directions. However, our findings suggest that proximity to a surface post-tumble tends to maintain rather than distance the cells from the boundary, indicating that tumbling may not facilitate escape from confined spaces but could instead encourage the formation of biofilms. This exploration offers insights into the bio-inspired design principles for microswimmers in complex fluidic environments, with implications for understanding bacterial motility and the development of synthetic micro-robots. |
| 분류기호 (MSC number(s)) |
92C17 |
| 키워드(Keyword(s)) | Microswimmer, flagellar motor, bundling, tumbling |
| 강연 형태 (Language of Session (Talk)) |
Korean |