Abstract
We extend the recent formulation of the Ewald sum for electrostatics in a two-dimensionally periodic three-dimensional multi- atom layer or two-dimensional single-atom layer system with a rectangular periodic boundary condition (J Chem Theory Comput, 2014, 10: 534–542) to that with a parallelogrammic periodic boundary condition in general. Following the discussion of an efficient implementation of the formula, we suggest a simple setup of parameters using a relatively smaller screening factor and the associated larger real space cutoff distance to reach an optimized algorithm of an order N computational cost. The connection between the previous application of the Ewald sum to ionic crystal systems and the future application to molecular self-assembly or disassembly systems on solid surfaces or at liquid-liquid interfaces are illustrated to demonstrate the applicability of the present work to simulate the self-assembly process and to produce dynamical, structural and thermodynamic properties of experimental self-assembly systems of interest.
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Pan, C., Hu, Z. Optimized Ewald sum for electrostatics in molecular self-assembly systems at interfaces. Sci. China Chem. 58, 1044–1050 (2015). https://doi.org/10.1007/s11426-014-5303-8
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DOI: https://doi.org/10.1007/s11426-014-5303-8