Shear stress
Definition
The tangential force per unit area from flowing fluid; a key parameter in vascular biology, platelet function, leukocyte rolling, and biofilm adhesion studies.
Why it matters
For scientific teams:
- Directly influences adhesion strength, rolling velocity, and activation states.
- Enables controlled comparison of physiological versus pathological forces.
- Serves as a quantitative variable for mechanobiology experiments.
For decision-makers:
- Allows standardized, reproducible assay conditions.
- Enables modeling of disease-relevant force regimes.
- Supports rigorous experimental validation.
FAQ
Q: How is shear stress controlled?
A: By adjusting flow rates and channel geometry.
Q: What changes under higher shear stress?
A: Adhesion stability, activation thresholds, and detachment behavior.