TITLE

Artificial bacterial flagella: Fabrication and magnetic control

AUTHOR(S)
Li Zhang; Abbott, Jake J.; Lixin Dong; Kratochvil, Bradley E.; Bell, Dominik; Nelson, Bradley J.
PUB. DATE
February 2009
SOURCE
Applied Physics Letters;2/9/2009, Vol. 94 Issue 6, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
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.
ACCESSION #
36609456

 

Related Articles

  • Controlled manipulation and actuation of micro-objects with magnetotactic bacteria. Martel, Sylvain; Tremblay, Charles C.; Ngakeng, Serge; Langlois, Guillaume // Applied Physics Letters;12/4/2006, Vol. 89 Issue 23, p233904 

    Bacterial actuation and manipulation are demonstrated where Magnetospirillum gryphiswaldense magnetotactic bacteria (MTB) are used to push 3 μm beads at an average velocity of 7.5 μm s-1 along preplanned paths by modifying the torque on a chain of magnetosomes in the bacterium with a...

  • polymastigote.  // Taber's Cyclopedic Medical Dictionary;2005, p1726 

    A definition of the term "polymastigote" is presented. It refers to the condition of possessing several flagella.

  • Swimming behaviour of the multicellular magnetotactic prokaryote ' Candidatus Magnetoglobus multicellularis' under applied magnetic fields and ultraviolet light. Almeida, Fernando; Viana, Nathan; Lins, Ulysses; Farina, Marcos; Keim, Carolina // Antonie van Leeuwenhoek;Apr2013, Vol. 103 Issue 4, p845 

    Magnetotactic bacteria move by rotating their flagella and concomitantly are aligned to magnetic fields because they present magnetosomes, which are intracellular organelles composed by membrane-bound magnetic crystals. This results in magnetotaxis, which is swimming along magnetic field lines....

  • The wobbling-to-swimming transition of rotated helices. Man, Yi; Lauga, Eric // Physics of Fluids;Jul2013, Vol. 25 Issue 7, p071904 

    A growing body of work aims at designing and testing micron-scale synthetic swimmers. One method, inspired by the locomotion of flagellated bacteria, consists of applying a rotating magnetic field to a rigid, helically shaped, propeller attached to a magnetic head. When the resulting device,...

  • Adults have lower stroke rate during submaximal front crawl swimming than children. Kjendlie, Per-Ludvik; Stallman, Robert Keig; Stray-Gundersen, James // European Journal of Applied Physiology;May2004, Vol. 91 Issue 5/6, p649 

    The aim of this study was to examine the effects of body size and propelling surface size on stroke rate (SR) and stroke length (SL) during front crawl swimming. Eleven children [11.7 (0.8) years] and 13 adults [21.4 (3.7) years] were compared. A third group of swimmers (n=5) had their...

  • Swim, Sperm Robots, Swim. MORBER, JENNY // Discover;Nov2015, Vol. 36 Issue 9, p14 

    The article discusses the making of Sperm robots which is made of magnetosperm, 6 times larger than human sperm or spermatozoa, follows the style of swimming to swim inside the deep tissues with the help of magnetic fields.

  • Swarming motility by Photorhabdus temperata is influenced by environmental conditions and uses the same flagella as that used in swimming motility. Michaels, Brandye; Tisa, Louis S. // Canadian Journal of Microbiology;Mar2011, Vol. 57 Issue 3, p196 

    Photorhabdus temperata, an insect pathogen and nematode symbiont, is motile in liquid medium by swimming. We found that P. temperata was capable of surface movement, termed swarming behavior. Several lines of evidence indicate that P. temperata use the same flagella for both swimming and...

  • Research on Competitive Swimming Sports based on Optimal Control Theory. Jing meng Sun; Yueqiu Han; Hui Li // International Journal of Multimedia & Ubiquitous Engineering;Sep2014, Vol. 9 Issue 9, p219 

    Through the analysis of features of short-distance competitive swimming sports, the model of both kinetics and energy transformation is built. On the prerequisite of a series of rational hypotheses and restrictions, the optimal analysis is performed about the distance in a given time frame with...

  • Effects of drafting behind a two- or a six-beat kick swimmer in elite female triathletes. Millet, Grégoire; Chollet, Didier; Chatard, Jean-Claude; Millet, G.P. // European Journal of Applied Physiology;Aug2000, Vol. 82 Issue 5/6, p465 

    The metabolic and drag responses, together with the distance between the draftee and the leader, were studied in six female triathletes swimming behind a lead swimmer who used either a two- or a six-beat kick, at an average velocity of 1.24 m · s-1 (range 1.20–1.31). Drag was measured...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics