Chemotaxis is a phenomenon which enables cells to sense concentrations of certain
chemical species in their microenvironment and move towards chemically favorable regions …

Diffusion-based microfluidic devices can generate steady, arbitrarily shaped chemical
gradients without requiring fluid flow and are ideal for studying chemotaxis of free-swimming …

Microfluidics is revolutionizing the way we study the motile behavior of cells, by enabling
observations at high spatial and temporal resolution in carefully controlled …

The plug-in-pond and capillary assays are convenient methods for measuring attractant and
repellent bacterial chemotaxis. However, these assays do not provide quantitative …

Chemotaxis allows bacteria to approach sources of attractant chemicals or to avoid sources
of repellent chemicals. Bacteria constantly monitor the concentration of specific …

We have developed a user-friendly microfluidic device for the study of gradient-mediated
bacterial behaviors, including chemotaxis. This device rapidly establishes linear …

Creating and maintaining a precise molecular gradient which is stable in space and time are
essential to studies of chemotaxis. This paper describes a simple, compact, and user …

A three-point microfluidic system was developed and used to experimentally verify bacterial
chemotaxis with known chemoeffectors. Using pneumatically-controlled micro-valves, the …

We present a diffusion-driven and long-range concentration gradient generator that uses
hydrogel as a porous membrane to prevent convection flows but allow the diffusion of cell …

Chemotaxis is the migration of cells in gradients of chemoeffector molecules. Although
multiple, competing gradients must often coexist in nature, conventional approaches for …