Fluid Interface
Fluid Interface - Related Videos
02:04
Protein-protein Interfaces
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2020
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a polypeptide...
08:05
Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces
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Cited by 8 •
2022
This manuscript describes the design and operation of a microtensiometer/confocal microscope to do simultaneous measurements of interfacial tension and surface dilatational rheology while visualizing the interfacial morphology. This provides the real-time construction of structure-property relationships of interfaces important in technology and physiology.
07:06
Methods for the Self-integration of Megamolecular Biopolymers on the Drying Air-LC Interface
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Cited by 4 •
2017
A method for the drying-induced self-integration of megamolecular biopolymers on the air-liquid crystalline interface is provided here. This methodology will be useful not only for understanding the macroscopic potentials of biopolymers, but also as an evaluation method for soft materials in biomedical and environmental fields.
06:09
P300-Based Brain-Computer Interface Speller Performance Estimation with Classifier-Based Latency Estimation
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Cited by 1 •
2023
This article presents a method for estimating same-day P300 speller Brain-Computer Interface (BCI) accuracy using a small testing dataset.
05:07
Characterizing Extracellular Vesicles from Biological Fluids
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Cited by 3 •
2025
Here, we demonstrate the characterization method for extracellular vesicles (EVs) collected from biological fluids, such as tears and saliva, of human subjects. The scanner used in this method is capable of detecting the phenotype, size, and total particle count of EVs from 1 µL of the sample.
FAQs
Interfacial tension changes the energetic and mechanical balance at the boundary, influencing whether the interface resists deformation or changes shape. Pressure differences can deform it, while viscous forces affect how quickly it moves and gravitational forces contribute to its stability. Engineers therefore consider these forces together when predicting interface behavior in multiphase systems.
Their combined effects determine whether an interface remains stable, deforms, or moves through a system. Pressure is associated with changes in shape, viscosity influences resistance to motion, and gravity affects stability. Evaluating these contributions helps engineers interpret the behavior of droplets, bubbles, thin films, and other fluid structures under operating conditions.
Contact angle indicates how strongly a fluid wets a solid surface, providing a useful measure of the interface's interaction with that surface. This behavior matters when designing systems involving coatings, droplets, or thin films, because surface wetting can influence how fluids spread, remain localized, or interact with engineered materials.
The two interface types can exhibit different behavior because the adjoining phases have different compositions and molecular interactions. That distinction affects the resulting interfacial tension and the response to pressure, viscous, and gravitational forces. Recognizing the interface type helps engineers select appropriate considerations for emulsions, bubbles, droplets, and multiphase flows.
A useful analysis begins by identifying the adjoining fluids and the relevant solid surfaces, then examining interfacial tension, pressure, viscous forces, gravitational effects, and contact angle where wetting occurs. Relating these variables to shape, motion, and stability provides a basis for predicting transport, mixing, and flow performance in the intended system.
Fluid-interface behavior is important in microfluidic devices, coatings, heat-transfer systems, separators, and chemical-processing equipment. These applications depend on controlling or predicting droplets, bubbles, emulsions, thin films, or multiphase flow. Understanding the interface helps engineers connect material and operating conditions with the performance of the overall process.
Analysis can help predict how fluid structures deform and move, how stable they remain, and how interfaces affect transport, mixing, and flow performance. These outcomes support engineering decisions in systems where droplets, bubbles, emulsions, thin films, or multiple flowing phases determine the effectiveness of processing, separation, coating, or heat-transfer operations.