{"title":"Absolute negative mobility of an inertial deformable particle under steady laminar flows.","authors":"Fu-Jun Lin, Jia-le Wu, Wei Lin, Jing-Jing Liao","doi":"10.1103/PhysRevE.111.045407","DOIUrl":null,"url":null,"abstract":"<p><p>The transport behavior of an inertial deformable particle in a two-dimensional steady laminar flow is numerically analyzed under the influence of a constant force and a periodic potential. By systematically adjusting parameters such as phase difference, target area, potential height, constant force, shape parameter, diffusion coefficient, and Stokes time, we analyze the effects on particle motion and the emergence of absolute negative mobility (ANM). Our results reveal that smaller target areas and moderate potential heights maximize ANM, while increased external force and extreme diffusion or inertia reduce it. We identify an optimal parameter range where negative mobility is most prominent, providing insights relevant to applications in fields like microfluidics and soft robotics.</p>","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"111 4-2","pages":"045407"},"PeriodicalIF":2.4000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical review. E","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1103/PhysRevE.111.045407","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Mathematics","Score":null,"Total":0}
引用次数: 0
Abstract
The transport behavior of an inertial deformable particle in a two-dimensional steady laminar flow is numerically analyzed under the influence of a constant force and a periodic potential. By systematically adjusting parameters such as phase difference, target area, potential height, constant force, shape parameter, diffusion coefficient, and Stokes time, we analyze the effects on particle motion and the emergence of absolute negative mobility (ANM). Our results reveal that smaller target areas and moderate potential heights maximize ANM, while increased external force and extreme diffusion or inertia reduce it. We identify an optimal parameter range where negative mobility is most prominent, providing insights relevant to applications in fields like microfluidics and soft robotics.
期刊介绍:
Physical Review E (PRE), broad and interdisciplinary in scope, focuses on collective phenomena of many-body systems, with statistical physics and nonlinear dynamics as the central themes of the journal. Physical Review E publishes recent developments in biological and soft matter physics including granular materials, colloids, complex fluids, liquid crystals, and polymers. The journal covers fluid dynamics and plasma physics and includes sections on computational and interdisciplinary physics, for example, complex networks.