期刊
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
卷 9, 期 3, 页码 1838-1845出版社
AMER CHEMICAL SOC
DOI: 10.1021/ct301010b
关键词
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资金
- National Science foundation of China [20825311, 21173051]
- 973 program [2011CB808500, 2013CB834603]
- Science and Technology Commission of Shanghai Municipality [08DZ2270500]
We propose an unbiased general-purpose potential energy surface (PES) searching method for both the structure and the pathway prediction of a complex system. The method is based on the idea of bias-potential-driven dynamics and Metropolis Monte Carlo. A central feature of the method is able to perturb smoothly a structural configuration toward a new configuration and simultaneously has the ability to surmount the high barrier in the path. We apply the method for locating the global minimum (GM) of short-ranged Morse clusters up to 103 atoms starting from a random structure without using extra information from the system. In addition to GM searching, the method can identify the pathways for chemical reactions with large dimensionality, as demonstrated in a nanohelix transformation containing 222 degrees of freedoms.
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