Figure 2 | Scientific Reports

Figure 2

From: A low voltage nanopipette dielectrophoretic device for rapid entrapment of nanoparticles and exosomes extracted from plasma of healthy donors

Figure 2

(a) A schematic of the nanopipette-DEP device. The ionic current across the pipette and the trajectory of the particles were simultaneously recorded. (b) (i) Microscopic image of entrapment as 10 V/cm was applied with the positive bias at the base of the pipette after 100 seconds. (b) (ii) The conductance measurements across the 1 μm pore as the particles accumulate by the tip. (c) (i) Microscopic image of few particles entrapment as negative 10 V/cm bias was applied at the base of the pipette after 100 seconds. (c) (ii) The corresponding conductance measurements across the 1 μm pore. (d) The correlation between the magnitude of electric field and the number of trapped particles after 100 seconds. The suspending medium was 10 mM KCl (pH = 7.0).

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