Figure 2 | Scientific Reports

Figure 2

From: Optical detection of the magnetophoretic transport of superparamagnetic beads on a micromagnetic array

Figure 2

Opti-MMA photodetector signal for a small number of 2.8 µm diameter SPM beads as the frequency of the external magnetic field was increased from 0 to 100 Hz (FOV3). The five labeled regions correspond to external magnetic field frequencies of (i) no external field, (ii) ω = 1 Hz, (iii) ω < ωc (2 Hz–19 Hz), (iv) ωc ≤ ω < ωi,(20 Hz–39 Hz), (v) ω ≥ ωi(40 Hz–100 Hz), and (vi) no external field. We note that the signal background shifts from i to vi due to a change in the total number of beads in the FOV.

Back to article page