Figure 1 | NPG Asia Materials

Figure 1

From: Concentric manipulation and monitoring of protein-loaded superparamagnetic cargo using magnetophoretic spider web

Figure 1

Conceptual design of magnetic spider web. (a) Schematics of the spider web radii with concentric movement of a magnetic particle under the clockwise rotation of the magnetic field. (b) The magnetic particle diverging under the counterclockwise rotation. (c) Schematic representation of the magnetoresistive (MR) sensor-integrated magnetic spider web using the NiFe magnetic pattern (thickness 100 nm). (d) Scanning electron microscope (SEM) image of the MR (planar Hall resistance (PHR))-type sensor integrated with the spider web net and the measuring parameters. (e) Schematic cross-sectional view of the layered structures of the MR sensor and magnetic patterns, marked as A and B in Figure 1d. (f) SEM image of streptavidin-coated magnetic particles (2.8 μm diameter) used for manipulation and monitoring. (g) Bright-field and (h) fluorescence images of magnetic particles conjugated with Atto-520 biotin.

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