The robustness, accuracy, and validity of an atomistic simulations hinge on the appropriate choice of force fields. Force fields are key for modeling the interaction between atoms of a matter under study, and the challenge is to have an accurate force field working for any specific material at any desired temperature. To serve this objective and make a benchmark as well as a shortcut for users to find their best force fields, scientists have examined a number of force fields for materials that are popular in micro- and nanotechnologies.

Via:: http://www.nanowerk.com/spotlight/spotid=47019.php

Accurate simulations at the nanoscale depend on choosing appropriate interatomic potentials

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