Bacteria are among the oldest and most abundant species on Earth. Bacteria successfully
colonize diverse habitats and play a significant role in the oxygen, carbon, and nitrogen …

Microbes thrive in diverse porous environments—from soil and riverbeds to human lungs
and cancer tissues—spanning multiple scales and conditions. Short-to long-term …

Fluid flow is ubiquitous in many environments that form habitats for microorganisms.
Therefore, it is not surprising that both biological and artificial microswimmers show …

Artificial model swimmers offer a platform to explore the physical principles enabling
biological complexity, for example, multigait motility: a strategy employed by many …

Biological microswimmers navigate upstream of an external flow with trajectories ranging
from linear to spiralling and oscillatory. Such a rheotactic response primarily stems from the …

Bacterial contamination of biological channels, catheters or water resources is a major threat
to public health, which can be amplified by the ability of bacteria to swim upstream. The …

Bacteria can swim upstream in a narrow tube and pose a clinical threat of urinary tract
infection to patients implanted with catheters. Coatings and structured surfaces have been …

Understanding the motility behavior of bacteria in confining microenvironments, in which
they search for available physical space and move in response to stimuli, is important for …

Motile bacteria are known to accumulate at surfaces, eventually leading to changes in
bacterial motility and biofilm formation. We use a novel two-color, three-dimensional …

Understanding the transport properties of microorganisms and self-propelled particles in
porous media has important implications for human health as well as microbial ecology. In …