Capillary Action Migration

Capillary action migration is the movement of a liquid through a narrow space without external pumping, driven by surface tension and adhesion between the liquid and surrounding surfaces. In biological techniques, liquid rises or advances when adhesive forces at the capillary wall combine with cohesive forces within the fluid, with the extent of movement influenced by pore or tube diameter, surface properties, viscosity, and gravity. This principle supports passive transport in capillary tubes, paper-based assays, microfluidic devices, and sample preparation systems. By enabling controlled movement of small volumes, capillary action migration helps simplify fluid handling, reduce equipment requirements, and improve the portability of biological analyses.

Capillary Action Migration - Related Videos

Education

JoVE Core - Chemistry

Surface Tension, Capillary Action, and Viscosity

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2020

Surface Tension The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...

Research

JoVE Journal - Bioengineering
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Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect

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Cited by 5 •

2015

A step-by-step generic process to create a bone-like template with engineered micro-channels is presented. High absorption and retention capabilities of the template are demonstrated by capillary action via micro-channels.

Differential Radial Capillary Action of Ligand Assay: A High-Throughput Technique to Identify Bacterial Nucleotide Second Messenger-Binding Intracellular Proteins

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2025

This video demonstrates the differential radial capillary action of ligand assay — a technique for systematic high-throughput screening of intracellular nucleotide second messenger-binding proteins. This technique allows for direct binding of the messengers to the overexpressed target protein in the cell lysate — bypassing the need for protein purification.

Mobility Shift Affinity Capillary Electrophoresis: A Method to Analyze Sample-Ligand Interactions Depending on Differential Migration of Protein-Ligand Complexes

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2025

This video describes the method to analyze protein-ligand interaction by mobility-shift affinity capillary electrophoresis. This method can be used for characterizing the binding behavior of a protein with various charged ligands.

Capillary Electrophoresis Separation of Monoclonal Antibody Isoforms Using a Neutral Capillary

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Cited by 2 •

2017

Here, we present a comprehensive capillary zone electrophoresis protocol for the assessment of intrinsic physicochemical heterogeneity of monoclonal antibodies as a quality attribute.

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