Capillary Action
Capillary Action - Related Videos
02:57
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...
09:35
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.
04:38
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.
14:53
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.
08:50
Capillary Electrophoresis (CE)
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2023
Source: Laboratory of Dr. B. Jill Venton - University of Virginia Capillary electrophoresis (CE) is a separation technique that separates molecules in an electric field according to size and charge. CE is performed in a small glass tube called a capillary that is filled with an electrolyte solution. Analytes are separated due to differences in electrophoretic mobility, which varies with charge, solvent viscosity, and size. Traditional electrophoresis in gels is limited in the amount of voltage...
FAQs
Adhesion draws liquid toward the walls of a narrow space, while cohesion helps neighboring molecules remain connected. Surface tension supports the continuity of the liquid as it moves, allowing these forces to counteract gravity. Their combined effect explains why fluid can advance through narrow biological structures without relying on an external pumping device.
Evaporation from leaves increases the upward movement of water through narrow xylem vessels. This loss of water at the leaf surface helps maintain the movement of fluid from lower plant regions toward the leaves. As a result, capillary action contributes to continuing water delivery through the plant rather than producing only a temporary rise.
Capillary action moves liquid through narrow spaces using interactions between the liquid and surrounding surfaces, along with cohesion and surface tension. An external pump instead supplies a separate mechanical force. This distinction matters in biology because plant fluid movement can occur through narrow xylem vessels without a device that actively pushes the liquid from one location to another.
Narrow xylem vessels provide the confined spaces in which surface-related forces can support water movement. Their structure allows adhesion, cohesion, and surface tension to contribute to upward transport through stems toward leaves. This relationship connects vessel dimensions with the plant’s ability to maintain hydration and distribute water and dissolved nutrients across its tissues.
Movement through roots, stems, and leaves helps carry water to areas that require it for hydration. Because water transport also supports the movement of nutrients, the same process contributes to nutrient distribution throughout the plant. Examining these connected pathways helps relate a physical fluid phenomenon to whole-plant biological functions.
The principle also helps explain fluid movement in tissues and supports paper-based assays used in biological research. In these settings, liquid movement through narrow spaces can assist the handling or study of biological fluids without an external pump. Its relevance therefore extends from plant physiology to research tools that depend on controlled fluid travel through confined materials.