resist.access: Calculate access resistance for a pipette tip
In breakage: SICM pipette tip geometry estimation

Description Usage Arguments Value Author(s) References See Also Examples

Calculates the access resistance for the open pore at the tip of a SICM pipette, using the approximation due to Hall (1975).

1	resist.access(r, rho = 51)

`r`	Radius of the pipette tip opening.
`rho`	Resistivity of the surrounding conductive material, in ohm centimetres. The default value of 51 ohm cm corresponds to a 150 mM solution of KCl.

The calculated access resistance, in ohms.

Matthew Caldwell

Hall, James E. 1975 Access resistance of a small circular pore. J. Gen. Physiol., 66(4), 531–532

resist.access, resist.total, resist.breakage

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# access resistance to a 50nm pipette tip in solution of resistivity 64 ohm cm
# converting result from ohms to megohms for readability
resist.access(r=0.05, rho=64) * 1e-6