Controlled manipulation and actuation of micro-objects with magnetotactic bacteria

By S. Martel, Charles Tremblay, Serge Ngakeng, Guillaume Langlois. 2006

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Modeling and Experimental Characterization of an Untethered Magnetic Micro-Robot (2009, background): “Although many miniature robots exist on the centimeter scale, true micrometer-scale robots, with all characteristic lengths of the order of tens to hundreds of micrometers, are still quite rare (Yamazaki et al. 2004 Donald et al. 2006a Martel et al. 2006 Sul et al. 2006 Vollmers et al. 2008).”
Bacterial ratchet motors (2009, background): “External fields, such as optical or magnetic (6), are usually required whenever a unidirectional and controllable motion is needed.”
Electrokinetic and optical control of bacterial microrobots (2011, methodology): “Magnetotactic bacteria may be controlled to swim en masse in the direction of magnetic field lines and have been used as collectives to move microscale structures [18].”
Flagellated Magnetotactic Bacteria as Controlled MRI-trackable Propulsion and Steering Systems for Medical Nanorobots Operating in the Human Microvasculature (2009, methodology): “The validation through experimental data demonstrating the use of a bacterium to push, transport and manipulate a micro-object and the actuation of micro- nanorobots with precise control over the displacement of the bacterium has been first reported in (Martel et al. 2006).”