116 citations · 384 across the 18 of their papers we have counts for
18 papers
Flow-polarity decoupling and universal mobility enhancement in dense bacterial active fluids with mesoscale order
Yuhao Wang, Premkumar Leishangthem, Yiming Ding +2
Active fluids consisting of living cells or synthetic microswimmers display rich emergent behavior and nonequilibrium mechanical properties, which not only shed light on various bi…
Bacterial dimensions sensitively regulate surface diffusivity and residence time
Premkumar Leishangthem, Xuan Wang, Junan Chen +2
Run-and-tumble is a common but vital strategy that bacteria employ to explore environment suffused with boundaries, as well as to escape from entrapment. In this study we reveal ho…
Cell aspect ratio important for bacterial rheotaxis
Jiachen Zhong, Xinliang Xu
When placed in flows with local shear, flagellated bacteria commonly display reorientations towards the local vorticity direction, a chirality-induced rheotactic behavior of great…
An entropic effect essential for surface entrapment of bacteria
Premkumar Leishangthem, Xinliang Xu
The entrapment of bacteria near boundary surfaces is of biological and practical importance, yet the underlying physics is still not well understood. We demonstrate that it is cruc…
Molecular chaos in dense active systems
Lu Chen, Kyle J. Welch, Premkumar Leishangthem +7
The hypothesis of molecular chaos plays the central role in kinetic theory, which provides a closure leading to the Boltzmann equation for quantitative description of classic fluid…
Achieving adjustable elasticity with non-affine to affine transition
Xiangying Shen, Chenchao Fang, Zhipeng Jin +7
For various engineering and industrial applications it is desirable to realize mechanical systems with broadly adjustable elasticity to respond flexibly to the external environment…
The colloidal nature of complex fluids leads to enhanced motility of flagellated bacteria
Shashank Kamdar, Seunghwan Shin, Lorraine F. Francis +2
The natural habitats of microorganisms in the human microbiome and ocean and soil ecosystems are full of colloids and macromolecules, which impart non-Newtonian flow properties dra…
Two-Phase Dynamics of DNA Supercoiling based on DNA Polymer Physics
Biao Wan, Jin Yu
DNA supercoils are generated in genome regulation processes such as transcription and replication, and provide mechanical feedback to such processes. Under tension, DNA supercoil c…
Active suspensions of bacteria and passive objects: a model for the near field pair dynamics
Bokai Zhang, Yang Ding, Xinliang Xu
Near field hydrodynamic interactions are essential to determine many important emergent behaviors observed in active suspensions, but have not been successfully modeled so far. In…
Symmetric shear banding and swarming vortices in bacterial "superfluids"
Shuo Guo, Devranjan Samanta, Yi Peng +2
Bacterial suspensions--a premier example of active fluids--show an unusual response to shear stresses. Instead of increasing the viscosity of the suspending fluid, the emergent col…
Dynamics of ellipsoidal tracers in swimming algal suspensions
Ou Yang, Yi Peng, Zhengyang Liu +3
Enhanced diffusion of passive tracers immersed in active fluids is a universal feature of active fluids and has been extensively studied in recent years. Similar to microrheology f…
Analytic Solution of the Ornstein-Zernike Relation for Inhomogeneous Liquids
Yan He, Stuart A. Rice, Xinliang Xu
The properties of a classical simple liquid can be strongly affected by application of an external potential that supports inhomogeneity. To understand the nature of these property…
Diffusion of an ellipsoid in bacterial suspensions
Yi Peng, Lipeng Lai, Yi-Shu Tai +3
Active matter such as swarming bacteria and motile colloids exhibits exotic properties different from conventional equilibrium materials. Among these properties, the enhanced diffu…
Influence of Inter-Layer Exchanges on Vorticity-Aligned Colloidal String Assembly in a Simple Shear Flow
Xinliang Xu, Stuart A Rice, Aaron R Dinner
Hard spheres in Newtonian fluids serve as paradigms for Non-Newtonian materials phenomena exhibited by colloidal suspensions. A recent experimental study (Cheng et al. 2011 Science…
Correlated local bending of DNA double helix and its effect on the cyclization of short DNA fragments
Xinliang Xu, Beng Joo Reginald, Jianshu Cao
We report a theoretical study of DNA flexibility and quantitatively predict the ring closure probability as a function of DNA contour length. Recent experimental studies show that…
Divergence of the Long Wavelength Collective Diffusion Coefficient in Quasi-one and Quasi-two Dimensional Colloid Suspensions
Binhua Lin, Bianxiao Cui, Xinliang Xu +3
We report the results of experimental studies of the short time-long wavelength behavior of collective particle displacements in quasi-one-dimensional and quasi-two-dimensional col…
Structural Responses of Quasi-2D Colloid Fluids to Excitations Elicited by Nonequilibrium Perturbations
Jelena Pesic, Xinliang Xu, Joseph Zsolt Terdik +4
We investigate the response of a dense monodisperse quasi-two-dimensional (q2D) colloid suspension when a particle is dragged by a constant velocity optical trap. Consistent with m…
Maximally Random Jamming of Two-Dimensional One-Component and Binary Hard Disc Fluids
Xinliang Xu, Stuart A. Rice
We report calculations of the density of maximally random jamming (aka random close packing) of one-component and binary hard disc fluids. The theoretical structure used provides a…