resist.access {breakage} | R Documentation |
Calculates the access resistance for the open pore at the tip of a SICM pipette, using the approximation due to Hall (1975).
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
# 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