Kant Raushan, Gupta Rahul Kumar, Soni Harsh, Sood A K, Ramaswamy Sriram
Department of Physics, <a href="https://ror.org/04dese585">Indian Institute of Science</a>, Bangalore 560 012, India.
Sankhyasutra Labs Ltd., Manyata Embassy Business Park, Bengaluru, Karnataka 560 045, India.
Phys Rev Lett. 2024 Nov 15;133(20):208301. doi: 10.1103/PhysRevLett.133.208301.
We present experiments, supported by mechanically detailed simulations, establishing bulk condensation of a hard-bead fluid by a tiny population of orientable motile grains that self-assembles into a moving polarized monolayer. In a quasi-1D geometry two such layers, oppositely aligned, immobilize the condensed nonmotile component. We account for our observations through a continuum theory with a naturally nonreciprocal Cahn-Hilliard structure, whose predicted trends as a function of packing fraction are consistent with our observations.
我们展示了一些实验，这些实验得到了机械详细模拟的支持，实验表明，一小群可定向的运动颗粒能使硬球流体发生体相凝聚，这些颗粒自组装成一个移动的极化单层。在准一维几何结构中，两个这样相反排列的层会固定凝聚的非运动组分。我们通过一种具有天然非互易Cahn-Hilliard结构的连续介质理论来解释我们的观察结果，该理论预测的作为填充分数函数的趋势与我们的观察结果一致。
