论文成果

Anisotropy of average potential energy of passive plate in bacterial suspensions

摘要:We conduct optical-tweezers experiments to investigate the average potential energies of passive plates harmonically trapped in bacterial suspensions. Our results show that the mean potential energies along both the major and minor axes increase with bacterial concentration but decrease with trap stiffness. Notably, the average potential energy along the major axis consistently exceeds that along the minor axis. This discrepancy from equilibrium systems is primarily attributed to the distinct bacterial flow fields and direct bacterium-plate collisions near the major and minor axes, as evidenced by the higher orientational order around the plate along the major compared to the minor axis, despite identical bacterial densities in these regions. Our findings highlight the critical role of hydrodynamic interactions in determining the potential energy of passive objects immersed in an active bath.

关键字:average potential energy; active bath; passive plate; hydrodynamic interactions; 82.70.Dd; 87.16.Uv; 87.64.M-; 87.80.Cc

ISSN号:1674-1056

卷、期、页:卷: 34期: 4

发表日期:2025-04-01

影响因子:0.000000

期刊分区(SCI为中科院分区):三区

收录情况:SCI(科学引文索引印刷版),EI(工程索引),SCIE(科学引文索引网络版)

发表期刊名称:CHINESE PHYSICS B

参与作者:田宇鑫,朱红伟,彭毅,刘鹏,郑宁,杨明成

通讯作者:肖紫薇

第一作者:宁鲁慧,陈君青

论文类型:期刊论文

论文概要:宁鲁慧,肖紫薇,田宇鑫,朱红伟,彭毅,刘鹏,郑宁,杨明成,陈君青,Anisotropy of average potential energy of passive plate in bacterial suspensions,CHINESE PHYSICS B,2025,卷: 34期: 4

论文题目:Anisotropy of average potential energy of passive plate in bacterial suspensions