Surface Wettability
Surface Wettability - Related Videos
07:32
Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns
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Cited by 17 •
2017
Pool-boiling heat-transfer experiments were carried out to observe the effects of hybrid wettable patterns on the heat-transfer coefficient (HTC). The parameters of investigation are the number of interlines and the pattern orientation of the modified wettable surface.
08:48
Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment
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Cited by 1 •
2015
We report on a process of in situ alteration of HF treated Si (001) surface into a hydrophilic or hydrophobic state by irradiating samples in microfluidic chambers filled with H2O2/H2O solution (0.01%-0.5%) or methanol solutions using pulsed UV laser of a relative low pulse fluence.
01:16
Surface Tension and Surface Energy
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2023
When a paint brush is immersed in water, the bristles wave freely inside the water. When it is taken out, the bristles stick together. The reason behind this effect is surface tension. Consider a beaker filled with liquid. The bulk molecules in the liquid experience equal attractive forces on all sides with the surrounding molecules. However, the surface molecules experience a net attractive force downward due to the bulk molecules. The surface of the liquid behaves like a stretched membrane,...
07:23
Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures
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2025
This protocol presents a light-induced method for fabricating slippery three-dimensional structures via sequential digital patterning and grafting on silane-coated nanoporous surfaces. This approach enables the spatially controlled formation of slippery regions, enabling patterned liquid repellency and the quantitative analysis of interfacial slipperiness, with applications in fluid manipulation and surface engineering.
09:31
Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices
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Cited by 8 •
2019
Here we report the synthesis and characterization of ordered nanoporous carbon (with a 4.6 nm pore size) and SBA-15 (with a 5.3 nm pore size). The work describes the surface and textural properties of nanoporous molecular sieves, their wettability, and the melting behavior of D2O confined in the materials.
FAQs
The contact angle provides a measurable readout of how a liquid droplet interacts with a solid surface. A droplet that spreads more extensively produces a different angle from one that remains beaded, reflecting the balance between liquid cohesion and liquid–surface adhesion. Comparing contact angles helps researchers evaluate how composition or surface treatment changes interfacial behavior.
Liquid cohesion holds molecules within the droplet together, whereas adhesion between the liquid and solid encourages contact with the surface. Wettability reflects the competition between these interactions rather than either force alone. Stronger liquid–surface attraction favors spreading, while stronger internal cohesion favors beading, making these factors important when selecting or modifying materials for fluid contact.
Surface energy describes the energetic tendency of a solid surface to interact with a liquid, while roughness changes the available and physically accessible surface area. Consequently, two surfaces with similar composition can show different wetting behavior if their texture or surface energy differs. Considering both variables improves interpretation of contact-angle measurements and surface-treatment results.
A typical evaluation places a liquid droplet on the solid surface and determines its contact angle. Measurements can then be compared across different compositions, surface modifications, or roughness conditions. Consistent comparison is important because the resulting angle serves as the experimental indicator of how readily the liquid spreads or remains beaded on each material.
Wettability influences whether a liquid contacts and distributes across a material effectively. In coatings, this affects uniformity; in adsorption, it influences liquid–surface contact; and in catalysis, it can alter how reactant-containing liquids interact with the active material. Adjusting composition or surface properties therefore provides a way to improve interfacial performance in these chemical processes.
Control becomes useful when fluid transport, bonding, cleaning, or resistance to contamination affects performance. Surface modification or composition changes can tailor how liquids interact with membranes, sensors, and biomedical materials. The resulting wettability adjustment may support more suitable fluid movement, stronger material integration, easier cleaning, or reduced unwanted contamination in the intended application.