Sharma Abhishek, Soni Harsh
School of Physical Sciences (SPS), Indian Institute of Technology Mandi, Parashar Road, Tehsil Sadar, Near Kataula, Kamand, Himachal Pradesh 175005, India.
Soft Matter. 2024 Aug 22;20(33):6608-6617. doi: 10.1039/d4sm00667d.
We investigate the statistical behavior of a system comprising fore-aft symmetric rods confined between two vertically vibrating plates using numerical simulations closely resembling the experimental setup studied by V. Narayan , , 2007, , 105-108. Our focus lies in studying the phase transition of the system from an isotropic phase to a nematic phase as we increase either the rod length or the rod concentration. Our simulations confirm the presence of long-range ordering in the ordered phase. Furthermore, we identify a phase characterized by a periodic ordering profile that disrupts translation symmetry. We also provide a detailed analysis of the translational and rotational diffusive dynamics of the rods. Interestingly, the translational diffusivity of the rods is found to increase with the rod concentration.
我们使用与V. Narayan在2007年（文献编号105 - 108）所研究的实验装置极为相似的数值模拟方法，研究了一个由前后对称的杆组成的系统的统计行为，该系统被限制在两个垂直振动的平板之间。我们的重点在于研究当增加杆的长度或杆的浓度时，系统从各向同性相到向列相的相变。我们的模拟证实了有序相中存在长程有序。此外，我们识别出一个以破坏平移对称性的周期性有序分布为特征的相。我们还对杆的平移和旋转扩散动力学进行了详细分析。有趣的是，发现杆的平移扩散系数随杆的浓度增加而增大。
