发表机构
Max Planck Institute for Dynamics and Self-Organization; Institute for the Dynamics of Complex Systems, University of Göttingen; Laboratoire Charles Coulomb (L2C), Université de Montpellier, CNRS（马克斯·普朗克动力学与自组织研究所; 哥廷根大学复杂系统动力学研究所; 蒙彼利埃大学查尔斯·库隆实验室（L2C），法国国家科学研究中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
通过周期性调制活性粒子自推进力，在非对称势中实现电流增强与方向反转，为活性粒子选择性分选提供动态控制手段。
AI 中文摘要
我们证明，在非对称势阱中周期性调制活性粒子的自推进力，即使推进速度本身从不改变符号，也能增强整流输运并使其方向反转。电流增强源于活性输运对推进强度的非线性响应，而电流反转则源于活性诱导扩散与被动弛豫之间的相互作用。我们的理论分析识别了由这些不同整流机制主导的参数区间，并预测了电流反转发生的有限驱动周期范围。这些结果确立了循环活性作为动态控制整流活性输运的手段，并有望应用于活性粒子的选择性分选。
英文摘要
We show that periodically modulating the self-propulsion of active particles in an asymmetric potential can both enhance rectified transport and reverse its direction, even when the propulsion speed itself never changes sign. Current enhancement results from the nonlinear response of active transport to propulsion strength, whereas current reversal emerges from the interplay between activity-induced spreading and passive relaxation. Our theoretical analysis identifies the regimes governed by these distinct rectification mechanisms and predicts the finite range of driving periods over which current reversal occurs. These results establish cyclic activity as a means of dynamically controlling rectified active transport, with potential applications to the selective sorting of active particles.
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