title: Screening properties of four mesoscale smoothed charge models, with application to dissipative particle dynamics.
abstract: We extend our previous study [J. Chem. Phys. 138, 204907 (2013)] to quantify the screening properties of four mesoscale smoothed charge models used in dissipative particle dynamics. Using a combination of the hypernetted chain integral equation closure and the random phase approximation, we identify regions where the models exhibit a real-valued screening length, and the extent to which this agrees with the Debye length in the physical system. We find that the second moment of the smoothed charge distribution is a good predictor of this behaviour. We are thus able to recommend a consistent set of parameters for the models.
authors.affiliation: Unilever R&D Port Sunlight, Quarry Road East, Bebington, Wirral CH63 3JW, United Kingdom.
authors.forename: Patrick B
authors.initials: PB
authors.lastname: Warren
authors.affiliation: Department of Chemistry, St. Petersburg State University, 26 Universitetsky prosp., 198504 St. Petersburg, Russia.
authors.forename: Andrey
authors.initials: A
authors.lastname: Vlasov