Effect of quantity and configuration of attached bacteria on bacterial propulsion of microbeads

被引：123

作者：

Behkam, Bahareh ^{[1
]}

Sitti, Metin ^{[1
]}

机构：

[1] Carnegie Mellon Univ, NanoRobot Lab, Dept Mech Engn, Pittsburgh, PA 15213 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 22期

基金：

美国国家科学基金会;

关键词：

biological techniques; cellular biophysics; microorganisms; molecular biophysics; plasma materials processing; stochastic processes;

D O I：

10.1063/1.3040318

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Flagellated chemotactic bacteria have been utilized as actuators for propulsion of polystyrene microbeads by randomly attaching several bacteria on their surface. In this work, a plasma-based bacteria patterning technique is developed and used to limit bacteria attachment to approximately half of the microbead's surface. Consequently, the effect of quantity and configuration of the attached bacteria on propulsion speed is studied experimentally. It is shown that the correlation between the propulsion speed and the number of bacteria is a strong function of the configuration of the bacteria and it follows one of the two distinct trends quantified by the proposed stochastic model.

引用

页数：3

共 14 条

[1]

[Anonymous], 2001, Probability, Random Variables, and Stochastic Processes

[2]

BEHKAM B, 2008, THESIS CARNEGIE MELL

[3] Bacterial flagella-based propulsion and on/off motion control of microscale objects [J].