Fig. 6
From: Magnetocontrollability of Fe7C3@C superparamagnetic nanoparticles in living cells
CMFM-TEM microscopy images of the cell with Fe7C3@C MNPs taken after the 24 h exposure to magnetic field. a Morphology image of the cell in AFM; b phase shift map; c overlay image of superimposed topographic and phase shift map; d the same field of view in TEM; e group of Fe7C3@C MNPs agglomerates; f fine ultrastructure of agglomerate region with highest magnetic moment. N the cell nucleus. An arrow indicates the direction towards the magnet. Scale bar a–d 5 µm, e 1 µm, f 100 nm