Fabrication and magnetic control of bacteria-inspired robotic microswimmers
Fabrication and magnetic control of bacteria-inspired robotic microswimmers
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DOI：
10.1063/1.3518982
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发表时间：
2010-11-22
影响因子：
4
通讯作者：
Kim, Min Jun
中科院分区：
文献类型：
--
作者：
Cheang, U. Kei;Roy, Dheeraj;Kim, Min Jun
利用游动细菌的力学原理，在低雷诺数的流体环境中制造并控制了一个仿生的微尺度系统。微游泳器由聚苯乙烯微珠通过鞭毛细丝通过亲和素-生物素连接连接到磁性纳米颗粒组成。鞭毛细丝是从鼠伤寒沙门氏菌中分离出来的。推进能量由设计成近似亥姆霍兹构型的外部旋转磁场提供。此外，使用有限元分析软件COMSOL MULTHICHICS对磁力控制器内的机器人装置进行了仿真。机器人微泳者在二维磁场中展示了鞭毛推进，这表明这些仿生设计的设备在未来的生物医学应用中是可控的。(C)2010年美国物理研究所。[DOI：10.1063/1.3518982]
A biomimetic, microscale system using the mechanics of swimming bacteria has been fabricated and controlled in a low Reynolds number fluidic environment. The microswimmer consists of a polystyrene microbead conjugated to a magnetic nanoparticle via a flagellar filament using avidin-biotin linkages. The flagellar filaments were isolated from the bacterium, Salmonella typhimurium. Propulsion energy was supplied by an external rotating magnetic field designed in an approximate Helmholtz configuration. Further, the finite element analysis software, COMSOL MULTIPHYSICS, was used to develop a simulation of the robotic devices within the magnetic controller. The robotic microswimmers exhibited flagellar propulsion in two-dimensional magnetic fields, which demonstrate controllability of the biomimetically designed devices for future biomedical applications. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3518982]