dorsal/arxiv
View SchemaEnergy controlled insertion of polar molecules in dense fluids
| Authors | Gianni De Fabritiis, Rafael Delgado-Buscalioni, Peter V. Coveney |
|---|---|
| Categories | |
| ArXiv ID | physics/0411027 |
| URL | https://arxiv.org/abs/physics/0411027 |
| DOI | 10.1063/1.1835957 |
| Journal | J. Chem. Phys. 121, 12139 (2004). Selected for the Virtual Journal of Biological Physics Research, December 15, 2004 Volume 8, Issue 12. |
Abstract
We present a method to search low energy configurations of polar molecules in the complex potential energy surfaces associated with dense fluids. The search is done in the configurational space of the translational and rotational degrees of freedom of the molecule, combining steepest-descent and Newton-Raphson steps which embed information on the average sizes of the potential energy wells obtained from prior inspection of the liquid structure. We perform a molecular dynamics simulation of a liquid water shell which demonstrates that the method enables fast and energy-controlled water molecule insertion in aqueous environments. The algorithm finds low energy configurations of incoming water molecules around three orders of magnitude faster than direct random insertion. This method is an important step towards dynamic simulations of open systems and it may also prove useful for energy-biased ensemble average calculations of the chemical potential.
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"abstract": "We present a method to search low energy configurations of polar molecules in\nthe complex potential energy surfaces associated with dense fluids. The search\nis done in the configurational space of the translational and rotational\ndegrees of freedom of the molecule, combining steepest-descent and\nNewton-Raphson steps which embed information on the average sizes of the\npotential energy wells obtained from prior inspection of the liquid structure.\nWe perform a molecular dynamics simulation of a liquid water shell which\ndemonstrates that the method enables fast and energy-controlled water molecule\ninsertion in aqueous environments. The algorithm finds low energy\nconfigurations of incoming water molecules around three orders of magnitude\nfaster than direct random insertion.\n This method is an important step towards dynamic simulations of open systems\nand it may also prove useful for energy-biased ensemble average calculations of\nthe chemical potential.",
"arxiv_id": "physics/0411027",
"authors": [
"Gianni De Fabritiis",
"Rafael Delgado-Buscalioni",
"Peter V. Coveney"
],
"categories": [
"physics.chem-ph",
"q-bio.BM",
"q-bio.QM"
],
"doi": "10.1063/1.1835957",
"journal_ref": "J. Chem. Phys. 121, 12139 (2004). Selected for the Virtual Journal\n of Biological Physics Research, December 15, 2004 Volume 8, Issue 12.",
"title": "Energy controlled insertion of polar molecules in dense fluids",
"url": "https://arxiv.org/abs/physics/0411027"
},
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