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. 2013 Mar 14;21(6):7139–7147. doi: 10.1364/OE.21.007139

Fig. 1.

Fig. 1

Schematic and output of the dual-coil MM-OCT setup: A) Dual-coil MM-OCT system. The scanning beam for OCT imaging passes through the bore at the center of the coil. B) Visualization of the time-dependent dual-coil activation and the resulting MNP displacement. C) Peak AC magnetic field strength (Gauss) at different modulation frequencies.