The role of a small-scale cutoff in determining molecular layers at fluid interfaces
- Author(s)
- Marcello Sega
- Abstract
The existence of molecular layers at liquid/vapour interfaces has been a long debated issue. More than ten years ago it was shown, using computer simulations, that correlations at the liquid/vapour interface resemble those of bulk liquids, even though they can be detected in experiments only in a few cases, where they are so strong that they cannot be concealed by the geometrical smearing of capillary fluctuations. The results of the intrinsic analysis techniques used in computer experiments, however, are still often questioned because of their dependence on a free parameter that usually represents a small-scale cutoff used to determine the interface. In this work I show that there is only one value of the cutoff that can ensure a quantitative explanation of the intrinsic density correlation peaks in terms of successive layer contributions. The value of the cutoff coincides, with a high accuracy, with the molecular diameter.
- Organisation(s)
- Computational and Soft Matter Physics
- Journal
- Physical Chemistry Chemical Physics
- Volume
- 18
- Pages
- 23354-23357
- No. of pages
- 4
- ISSN
- 1463-9076
- DOI
- https://doi.org/10.1039/c6cp04788b
- Publication date
- 09-2016
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103015 Condensed matter, 103006 Chemical physics
- Keywords
- ASJC Scopus subject areas
- Physics and Astronomy(all), Physical and Theoretical Chemistry
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/the-role-of-a-smallscale-cutoff-in-determining-molecular-layers-at-fluid-interfaces(ff8cd3b5-d143-4117-855c-af2d6fae8f74).html