...
首页> 外文期刊>Physica, A. Statistical mechanics and its applications >ON THE SIMULATION OF PLASTIC CRYSTALS OF N-ALKANES WITH AN ATOMISTIC MODEL
【24h】

ON THE SIMULATION OF PLASTIC CRYSTALS OF N-ALKANES WITH AN ATOMISTIC MODEL

机译:原子模型模拟N-烷烃的塑料晶体

获取原文
获取原文并翻译 | 示例
           

摘要

The structure and the dynamics of the rotator phase RI of nonadecane (C19H40) are investigated by Molecular Dynamics simulation on the basis of a model which treats all atoms explicitly. The study of such anharmonic solid phase of flexible molecules where rotational, longitudinal and intramolecular disorder coexist is a real challenge for simulations with a realistic potential. We test the stability of the overall crystal structure by monitoring X-ray patterns and we compare our analysis of the single molecule dynamics with the existing quasi elastic neutron spectroscopy predictions. This comparison shows correct trends of our model system but the reorientational freedom of individual molecules seems to be too large. These calculations illustrate the need for large system sizes when investigating layered structures of chain molecules. [References: 12]
机译:在分子模型明确地处理所有原子的基础上,通过分子动力学模拟研究了十八烷(C19H40)旋转相RI的结构和动力学。旋转,纵向和分子内无序共存的柔性分子的这种非调和固相的研究对于具有现实潜力的模拟是一个真正的挑战。我们通过监测X射线图来测试总体晶体结构的稳定性,并将单分子动力学分析与现有的准弹性中子光谱学预测进行比较。这种比较显示了我们模型系统的正确趋势,但是单个分子的重新定向自由似乎太大。这些计算表明,在研究链分子的分层结构时,需要大型系统。 [参考:12]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号