mols_to_mumol_m2¶

porems.utils.mols_to_mumol_m2(N, A)¶

Convert the number of molecules to concentration in \(\frac{\mu\text{mol}}{\text{m}^2}\).

The concentration is given as

\[c=\frac{N}{N_A\cdot A}\]

with surface \(A\) and avogadro constant \(N_A=6.022\cdot10^{23}\,\text{mol}^{-1}\). Assuming that the unit of the concentration is \(\mu\text{mol}\cdot\text{m}^{-2}\) and of the surface is \(\text{nm}^2\), the number of molecules is given by

\[c=\frac{[N]}{6.022\cdot10^{23}\,\text{mol}^{-1}\cdot[A]\,\text{nm}^2}\]

and thus

\[\boxed{c=\frac{N}{0.6022\cdot[A]}\cdot\frac{\mu\text{mol}}{\text{m}^2}}\ .\]

Parameters:

Nint: Number of molecules
Afloat: Surface in \(\text{nm}^2\)

Returns:

cfloat: Concentration in \(\frac{\mu\text{mol}}{\text{m}^2}\)