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`

1 2 3 | ```
# 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
``` |

```
Loading required package: Imap
[1] 3.2
```

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