Figure 7
Aspiration detection method in the low µm and sub-µm regime. (a) Schematics of aspirated sulfate latex beads in the low µm-regime at different ionic strength. (b) Summary of streaming current signals for various particle aspiration events. Schematic drawings depict the transition from ‘open’ to ‘blocked’ aperture state. Aspiration is performed with a suction pressure ranging from −300 mbar to −600 mbar and in a solution of 0.1 mM ionic strength or as otherwise stated. Dashed lines are guide to the eye. (c) Schematics of particles of various materials in the sub-µm regime aspirated with a nanopipette cantilever.
