Spatiotemporal evolutions of screw dislocation filaments in the quenched and confined 3D Yukawa liquids

Yun-Xuan Zhang^1*, Yi-Cheng Zhao¹, Hao-Wei Hu¹, Lin I¹

¹Department of Physics, National Central University, Jhongli, Taiwan

* Presenter:Yun-Xuan Zhang, email:yunxuanzhang1998@gmail.com

Liquid particles with disordered micro-structures tend to line up and form layers nearby a flat confinement. Here, using the three dimensional Yukawa liquid sandwiched between two flat boundaries as a platform, we numerically demonstrate the first observation of spontaneously formed screw dislocation (SD) filaments under deep quenching, and investigate their spatiotemporal evolutions. It is found that, after quenching, initial layered regions nearby the boundaries invade into the bulk liquid, associated with the spontaneous formation of many short chaotic SD filaments. After the layering fully occupies the entire system, pairwise annihilation and reconnection of SD filaments leads to the gradual length extension and number reduction of SD filaments, and the final formation of the large w-shaped SD filament loop.

Keywords: Quenched and confined 3D Yukawa liquids, Screw dislocation filaments