Figure 2. Synthesis of MIONs.
A. TEM images of MIONs synthesized via thermodecomposition of Fe(acac)3. Scale bars equal 100 nm. (Reproduced with permission from [12], © 2017 American Chemical Society.) B. TEM image of nanoclusters formed of small magnetite nanocrystals crosslinked by poly(acrylic acid). The mean diameter of the nanoclusters is 93 nm. Insert shows the high-resolution image of a nanocluster. (Reproduced with permission from [19], © 2007 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.) C. TEM image of a magnetotactic bacterium (M. magnetotacticum). The bacterium contains magnetite particles aligned in a chain parallel to its long axis. (Reproduced with permission from [56], © 2002 American Chemical Society.)