51 citations · 192 across the 9 of their papers we have counts for
9 papers
Transport and Energetics of Bacterial Rectification
Satyam Anand, Xiaolei Ma, Shuo Guo +2
Randomly moving active particles can be herded into directed motion by asymmetric geometric structures. Although such a rectification process has been extensively studied due to it…
Dynamics of Mass Polar Spheroids During Sedimentation
Kavinda J. Nissanka, Xiaolei Ma, Justin C. Burton
The dynamics of sedimenting particles under gravity are surprisingly complex due to the presence of effective long-ranged forces. When the particles are polar with a well-defined s…
Tuning the rheology and microstructure of particle-laden fluid interfaces with Janus particles
Yiming Qiao, Xiaolei Ma, Zhengyang Liu +3
Hypothesis: Particle-laden fluid interfaces are the central component of many natural and engineering systems. Understanding the mechanical properties and improving the stability o…
Crack patterns of drying dense bacterial suspensions
Xiaolei Ma, Zhengyang Liu, Wei Zeng +3
Drying of bacterial suspensions is frequently encountered in a plethora of natural and engineering processes. However, the evaporation-driven mechanical instabilities of dense cons…
Density Fluctuations and Energy Spectra of 3D Bacterial Suspensions
Zhengyang Liu, Wei Zeng, Xiaolei Ma +1
We experimentally study density fluctuations and energy spectra of bulk \textit{E. coli} suspensions of different concentrations. Our results verify the predicted scaling law of gi…
Experimental investigations on the nonequilibrium dynamics of pattern formation in fluid and granular systems
Xiaolei Ma
Patterns are quotidian in nature. Distinct multiscale patterns are generally a consequence of nonequilibrium dynamical processes associated with mechanical or hydrodynamic instabil…
Universal Scaling of Polygonal Desiccation Crack Patterns
Xiaolei Ma, Janna Lowensohn, Justin C. Burton
Polygonal desiccation crack patterns are commonly observed in natural systems. Despite their quotidian nature, it is unclear whether similar crack patterns which span orders of mag…
Self-organized oscillations of Leidenfrost drops
Xiaolei Ma, Justin C. Burton
In the Leidenfrost effect, a thin layer of evaporated vapor forms between a liquid and a hot solid. The complex interactions between the solid, liquid, and vapor phases can lead to…
Star-shaped Oscillations of Leidenfrost Drops
Xiaolei Ma, Juan-José Liétor-Santos, Justin C. Burton
We experimentally investigate the self-sustained, star-shaped oscillations of Leidenfrost drops. The drops levitate on a cushion of evaporated vapor over a heated, curved surface.…