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. 2013 Mar 12;14(3):5775–5783. doi: 10.3390/ijms14035775

Figure 1.

Figure 1

(a) is the optical image of γ-Fe2O3 nanoparticles aggregates without the BSA addition in the presence of a time-varied magnetic field. (b) is the optical image of γ-Fe2O3 nanoparticle aggregates after BSA addition in the presence of a time-varied magnetic field. The excitation current of magnetic field generator was 200 A. pH = 7 and the magnetic nanoparticles and BSA were dispersed into the pure water and their concentrations were 0.068 mg/mL and 0.02 mg/mL, respectively.