Artificial bacterial flagella: Fabrication and magnetic control

被引：932

作者：

Zhang, Li ^{[1
]}

Abbott, Jake J. ^{[1
,3
]}

Dong, Lixin ^{[1
,2
]}

Kratochvil, Bradley E. ^{[1
]}

Bell, Dominik ^{[1
]}

Nelson, Bradley J. ^{[1
]}

机构：

[1] ETH, Inst Robot & Intelligent Syst, CH-8092 Zurich, Switzerland

[2] Michigan State Univ, Dept Elect & Comp Engn, E Lansing, MI 48824 USA

[3] Univ Utah, Dept Mech Engn, Salt Lake City, UT 84112 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 06期

基金：

瑞士国家科学基金会;

关键词：

bio-inspired materials; biomimetics; magnetic field effects; medical control systems; microrobots; motion control; propulsion; SIGE/SI/CR HELICAL NANOBELTS; NANOTUBES; FIELDS;

D O I：

10.1063/1.3079655

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Inspired by the natural design of bacterial flagella, we report artificial bacterial flagella (ABF) that have a comparable shape and size to their organic counterparts and can swim in a controllable fashion using weak applied magnetic fields. The helical swimmer consists of a helical tail resembling the dimensions of a natural flagellum and a thin soft-magnetic "head" on one end. The swimming locomotion of ABF is precisely controlled by three orthogonal electromagnetic coil pairs. Microsphere manipulation is performed, and the thrust force generated by an ABF is analyzed. ABF swimmers represent the first demonstration of microscopic artificial swimmers that use helical propulsion. Self-propelled devices such as these are of interest in fundamental research and for biomedical applications.

引用

页数：3

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