Internal Interface Analysis
Internal Interface Analysis - Related Videos
14:11
Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
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Cited by 21 •
2016
We illustrate the application of 1H(15N,αγ)12C resonant nuclear reaction analysis (NRA) to quantitatively evaluate the density of hydrogen atoms on the surface, in the volume, and at an interfacial layer of solid materials. The near-surface hydrogen depth profiling of a Pd(110) single crystal and of SiO2/Si(100) stacks is described.
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.
09:18
Internal Standards
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2023
Source: Laboratory of Dr. B. Jill Venton - University of Virginia The goal of many chemical analyses is a quantitative analysis, where the amount of a substance in a sample is determined. In order to accurately calculate the concentration of an unknown from a sample, careful sample preparation is key. Every time a sample is handled or transferred, some of the sample can be lost. There are strategies however, for minimizing sample loss. There are also strategies for coping with sample loss and...
02:00
Internal Energy
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2020
The total of all possible kinds of energy present in a substance is called the internal energy (U), sometimes symbolized as E. Suppose a system with initial internal energy, Uinitial, undergoes a change in energy (transfer of work or heat), and the final internal energy of the system is Ufinal. Change in internal energy equals the difference between Ufinal and Uinitial. Although the values for Ufinal and Uinitial cannot be determined for a system, the first law of thermodynamics only...
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...
FAQs
Material mismatches alter how a load, temperature effect, transported mass, or electrical signal passes from one region to another. Analysis therefore examines whether the relevant quantity remains continuous across the boundary and how differing properties redistribute it. That redistribution can produce localized stress concentrations or degraded transfer, making interface behavior important for predicting system-level performance and reliability.
Continuity describes whether forces, heat, mass, or electrical signals transfer consistently across adjoining regions. Contact conditions determine how the regions interact, while defects can interrupt or concentrate that transfer. Evaluating these factors helps distinguish an interface that supports intended operation from one that creates local weaknesses, unreliable connections, or elevated failure risk within the larger engineering system.
The analysis first identifies which interaction governs performance, such as mechanical force, heat, mass movement, or an electrical signal. Engineers then represent the boundary using analytical models, simulation, or measurement and examine continuity, mismatch, contact behavior, and defects. This approach connects local interface conditions with the performance and reliability requirements of the complete system.
A practical workflow begins by identifying the adjoining materials, components, or functional regions and the forces or other quantities crossing their boundary. Engineers characterize mismatch, continuity, contact conditions, and possible defects, then select analytical modeling, simulation, or measurement. The resulting evidence is used to assess performance and reliability, locate risks, and guide design or material decisions.
Applications include joints, layered structures, composites, coatings, and assembled devices. In each case, internal connections may determine how effectively the overall structure carries forces, transfers heat or mass, or passes electrical signals. Examining those connections helps engineers evaluate compatibility and durability across designs that combine different materials, components, or functional regions.
Results can reveal interface-related failure risks, indicate whether selected materials work compatibly, and show where a connection may not satisfy performance or durability requirements. Engineers can use these findings to improve a design, compare material choices, and verify internal connections in assembled systems. The analysis therefore links local observations to broader reliability and qualification decisions.