Magnetic Nanoparticles produced from Bacteria
19 April 2008A team of interdisciplinary group of researchers including microbiologists, material chemists, material scientists and physicists, biochemists and chemical engineers from the US Department of Energy’s Ames Laboratory and Iowa State University was formed to study and synthesize magnetic nanoparticles from bacteria. The magnetic nanoparticles produced from bacteria could be used for various applications including drug targeting and delivery, magnetic seal or in magnetic ink.
Researchers have identified a few strain of bacteria that are able to produce magnetite (iron oxide). These particles have magnetic properties. These bacteria uses a protein to form nanoparticle of about 50 nm size and these crystalline nanoparticles bound together with the help of a membrane. Bacteria uses these nanoparticles as compass to align themselves with earth magnetic field.
This project is being funded by various government agencies including the Department of Energy and the Alfred P. Sloan Foundations. The research finding has been published in many journals including ACS Nano, Physical Review B and Advanced Functional Materials.
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