Related Experiment Video
Updated: Sep 20, 2026

Combining Fluidic Devices with Microscopy and Flow Cytometry to Study Microbial Transport in Porous Media Across Spatial Scales
Published on: November 25, 2020
[Bacterial motion in porous media]
L Iu Zaval'skiĭ1, A G Voloshin
1State Research Center for Applied Microbiology, Ministry of Public Health, Russian Federation, Moscow Oblast, Obolensk, 142279 Russia. zavalsky@obolensk.org
Abstract:
The motion of chemotactically different Escherichia coli C600, cheB287, and AW405 cells was studied using a column packed with silica gel. The model chemotaxis of bacteria in porous media seems to be adequate to natural bacterial chemotaxis in soils. The porous structure of silica gel prevents interfering convective flows. Silica gel columns make it possible to separate bacterial cells differing in motility and chemotaxis. Relevant physical phenomena are discussed. The concept of fast and slow chemotaxis is considered.
Related Concept Videos
Protein Diffusion in the Membrane
Intracellular Movement of Viruses and Bacteria
Steady, Laminar Flow in Circular Tubes
Couette Flow
Laminar and Turbulent Flow
Steady, Laminar Flow Between Parallel Plates

