From the results, the thickness of the air-water interface is 4 to 5 Angstrom.
Notes:
This is the results for two different HB criteria.
$n_f^{(s)}(t)$ is calculated since the "free" property can be clearly defined for each time step and each OH group. (ie. We only use the Case 2 scenario.)
From the results, the thickness of the air-water interface is 4 to 5 Angstrom. Notes: