Hydrophilic Pore
Hydrophilic Pore - Related Videos
03:07
Hydrophilic Interaction Liquid Chromatography: A Technique to Separate Hydrophilic Polar Analytes Using Hydrophilic Beads
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2025
This video demonstrates the principle of separation of hydrophilic polar compounds using hydrophilic interaction liquid chromatography. This technique helps in the purification of various polar analytes, including N-glycans.
09:01
A Protocol for the Production of Gliadin-cyanoacrylate Nanoparticles for Hydrophilic Coating
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2016
This article presents a protocol for the production of protein-based nanoparticles that changes the hydrophobic surface to hydrophilic. The produced nanoparticle is an assembly of gliadin-cyanoacrylate diblock copolymers. Spray coating with the produced nanoparticle changes the surface of target material to a hydrophilic surface.
01:23
Pore Size Distribution
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2024
In concrete, the pore size distribution significantly influences the material's properties. Capillary pores, markedly larger than gel pores, form a vast network within partially hydrated cement paste, reducing the concrete's strength and increasing its permeability. This heightened permeability leads to a greater risk of damage from environmental factors like freeze-thaw cycles and chemical attacks, with the extent of vulnerability also being tied to the water-to-cement ratio. Adequate...
09:09
Synthesis of Poly(N-isopropylacrylamide) Janus Microhydrogels for Anisotropic Thermo-responsiveness and Organophilic/Hydrophilic Loading Capability
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Cited by 3 •
2016
We present a protocol to synthesize Janus microhydrogels composed entirely of the same base material, poly(N-isopropylacrylamide) (PNIPAAm), with a clearly compartmentalized structure base on the phase separation of a supersaturated NIPAAm monomer solution. The synthesized Janus microhydrogels show unique properties such as anisotropic thermo-responsiveness and organophilic/hydrophilic loading capability.
11:20
Fabrication and Visualization of Capillary Bridges in Slit Pore Geometry
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Cited by 4 •
2014
A procedure for creating and imaging capillary bridges in slit-pore geometry is presented. The creation of capillary bridges relies on the formation of pillars to provide a directional physical and chemical heterogeneity to pin the fluid. Capillary bridges are formed and manipulated using microstages and visualized using a CCD camera.
FAQs
Selectivity arises from the match between a pore’s dimensions, charge, and chemical interactions with the substance approaching it. A pore can favor water, ions, or other water-soluble molecules when its lining provides compatible polar conditions, while differences in size and charge limit passage for other substances. These properties help determine which membrane crossings are physiologically possible.
Polar or charged amino acid side chains make the passage more compatible with water-soluble substances than the membrane’s hydrophobic interior. This lining therefore provides a favorable route through a region that otherwise restricts polar movement. The principle explains why changing the pore’s chemical environment can alter which substances it accommodates, even when the surrounding membrane remains unchanged.
Ion channels and aquaporins illustrate two biologically important uses of hydrophilic pores. In ion channels, the pore supports movement of ions relevant to electrical signaling; in aquaporins, it supports water movement relevant to osmoregulation. Comparing these systems shows that the same general membrane strategy can support different transported substances and distinct physiological roles.
Size and charge provide important constraints, but they do not fully describe selective transport. Interactions between a passing molecule and the pore’s lining add another level of discrimination, helping determine whether a polar substance is accommodated. Considering these interactions alongside dimensions and charge gives a more complete interpretation of why related water-soluble substances may not cross equally.
Researchers can connect structural features with transport behavior by examining pore size, charge, and the polar or charged residues lining the passage. They can then interpret how those characteristics relate to movement of water, ions, or other water-soluble molecules. This structure-to-function perspective is useful for explaining membrane physiology and comparing different pore systems.
Their transport functions support osmoregulation, electrical signaling, nutrient movement, and waste removal. Water movement through aquaporins contributes to osmoregulation, whereas ion movement through ion channels contributes to electrical signaling. Together, these roles show how pore-mediated transport links membrane permeability with broader biological function across cells.
Channel-related disorders make these pores relevant to disease research, while their defined structural and transport properties make them potential drug targets. Researchers can examine pore size, charge, and molecular interactions to understand how channel behavior relates to membrane physiology. This connection supports investigation of therapeutic strategies without separating molecular structure from its cellular consequences.
Knowledge of pore size, charge, polar lining, and molecular interactions helps frame the design and evaluation of engineered membrane systems. These features indicate how a membrane might be made more selective for water, ions, or other water-soluble molecules. The biological model therefore supplies structure-function principles for translating membrane transport into engineered settings.