Contact Interface
Contact Interface - Related Videos
11:13
Analysis of Contact Interfaces for Single GaN Nanowire Devices
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Cited by 1 •
2013
A technique was developed that removes Ni/Au contact metal films from their substrate to allow for the examination and characterization of the contact/substrate and contact/NW interfaces of single GaN nanowire devices.
09:35
Fabrication of High Contact-Density, Flat-Interface Nerve Electrodes for Recording and Stimulation Applications
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Cited by 24 •
2016
This article provides a detailed description on the fabrication process of a high contact-density flat interface nerve electrode (FINE). This electrode is optimized for recording and stimulating neural activity selectively within peripheral nerves.
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...
01:13
Contact Angle
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2023
When a solid is dipped inside a liquid, the liquid surface becomes curved near the contact. For some solid–liquid interfaces, the liquid is pulled up along the solid, while for others, the liquid surface is convex or depressed near the solid surface. This phenomenon can be explained using the concept of cohesive and adhesive forces. The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive force...
08:25
Contact Hypersensitivity as a Murine Model of Allergic Contact Dermatitis
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Cited by 2 •
2022
Contact hypersensitivity (CHS) is a murine experimental model of allergic contact dermatitis (ACD). CHS is based on sensitization with reactive hapten by painting the shaved skin of the chest and abdomen, with a subsequent ear skin challenge with a diluted hapten, causing a swelling reaction that is assessed in various ways.
FAQs
Contact pressure changes the portions of the surfaces that truly interact, because microscopic asperities carry the local load. As pressure changes, the interface can alter how forces and motion pass between bodies, affecting friction, adhesion, wear, and deformation. Engineers therefore treat pressure as a central design variable when predicting energy loss, durability, and potential failure.
Microscopic asperities matter because apparently smooth surfaces meet through their small-scale high points rather than across an ideal perfectly flat area. Their geometry and material properties influence friction, adhesion, wear, and resistance to heat flow. Accounting for this structure makes interface analysis more realistic and helps explain why measured performance can differ from predictions based only on nominal surface shape.
Lubrication and temperature modify interface behavior by changing the conditions under which the surfaces interact. Along with contact pressure, these conditions can influence friction, adhesion, wear, and heat transfer. Including them in an engineering analysis is important because a design that performs acceptably under one operating condition may experience different energy loss, durability, or failure behavior under another.
A useful analysis begins by specifying surface geometry, material properties, contact pressure, lubrication state, and temperature. Engineers then consider which transfer function matters in the application, such as force, motion, heat, or electrical current. Evaluating these inputs together supports predictions of deformation, energy loss, durability, and failure rather than treating the interface as an isolated ideal boundary.
Models provide a way to relate interface conditions to expected behavior, while measurements test whether those predictions represent the real system. Comparing the two can reveal how the interface affects deformation, energy loss, durability, and failure. This combined approach is especially valuable when microscopic surface effects or changing operating conditions make performance difficult to infer from geometry alone.
Contact interfaces are central to gears, bearings, seals, joints, robotic mechanisms, and electronic assemblies. In mechanical systems, analysis can guide expectations for force transfer, motion, friction, wear, and durability. In thermal or electromechanical assemblies, the same boundary can affect heat flow or electrical current, making interface characterization relevant to performance and reliability across different engineering designs.