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Large Scale Molecular Dynamics Simulations of a Liquid Crystalline Droplet with Fast Multipole Implementations

  • Zhiqiang Wang (a1), James Lupo (a1), Soumya S. Patnaik (a1), Alan McKenney (a1) and Ruth Pachter (a1)...

Abstract

The Fast Multipole Method (FMM) offers an efficient way (order O(N)) to handle long range electrostatic interactions, thus enabling more realistic molecular dynamics simulations of large molecular systems. The performance of the fast molecular dynamics (FMD) code, a parallel MD code being developed in our group, using the three-dimensional fast multipole method, shows a good speedup. The application to the full atomic-scale molecular dynamics simulation of a liquid crystalline droplet of 4-n-pentyl-4'-cyanobiphenyl (5CB) molecules, of size 35,872 atoms, shows strong surface effects on various orientational order parameters.

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