Li Jia-Jian, Guo Rui-Xue, Ai Bao-Quan
Key Laboratory of Atomic and Subatomic Structure and Quantum Control (Ministry of Education), Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter, School of Physics, <a href="https://ror.org/01kq0pv72">South China Normal University</a>, Guangzhou 510006, China and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, and Guangdong-Hong Kong Joint Laboratory of Quantum Matter, <a href="https://ror.org/01kq0pv72">South China Normal University</a>, Guangzhou 510006, China.
Phys Rev E. 2024 Aug;110(2-1):024608. doi: 10.1103/PhysRevE.110.024608.
The separation of chiral matter has garnered significant attention due to its wide-ranging applications in biological and chemical processes. In prior researches, particle interactions were predominantly repulsive, but the indiscriminate attraction among particles under attractive interactions makes the separation of mixtures more difficult. The question of whether chiral mixed particles, characterized by attractive effects, can undergo spontaneous separation, remains unresolved. We study a binary mixture of chiral (counterclockwise or clockwise) active particles with attractive interactions. It is demonstrated that attractive chiral particles can undergo spontaneous separation without the aid of any specific strategies. The key factor driving the separation is the attractive interactions, enabling the formation of stable clusters of particles with same chirality. There exist optimal parameters (self-propelled velocity, angular velocity, and packing fraction) at which the separation is optimal. Our results may contribute to a deeper understanding of the mechanisms behind chiral matter separation and potentially catalyze further experimental investigations in this field.
手性物质的分离因其在生物和化学过程中的广泛应用而备受关注。在先前的研究中，粒子间相互作用主要是排斥性的，但在吸引相互作用下粒子间不加区分的吸引力使得混合物的分离更加困难。具有吸引效应的手性混合粒子是否能发生自发分离这一问题仍未得到解决。我们研究了具有吸引相互作用的手性（逆时针或顺时针）活性粒子的二元混合物。结果表明，有吸引力的手性粒子无需任何特定策略就能发生自发分离。推动分离的关键因素是吸引相互作用，它能使具有相同手性的粒子形成稳定的聚集体。存在使分离效果最佳的最优参数（自推进速度、角速度和填充率）。我们的结果可能有助于更深入地理解手性物质分离背后的机制，并可能推动该领域进一步的实验研究。
