Lisa: The idea of small nanobots cruising through the human body, targeting diseases with special drug delivery is a little step closer. Reported in Technology Review, the Nanorobotics lab at the École Polytechnique de Montréal, in Canada have coupled nanobeads to bacteria which contain magnetic particles. Magnetotactic bacteria contain minute particles of magnetic material which they use to position and move themselves in response to a magnetic field. Most of these class of bacteria are sensitive to oxygen, and use this ability to navigate between oxygen-rich and oxygen-starved environments.
This property has been exploited to control the movement of the bacteria couples to the nanobeads in a microfluidic device. They have been directed through simulated humanblood vessels, where the bacteria/bead devices (dubbed ‘bacteria bots’) were able to be moved against the flow of red blood cells under the guidance of the MRI. (See video)
Originally published on Blog@NanoVic for Nanotechnology Victoria.