Electrostatic Surface Mapping
Electrostatic Surface Mapping - Related Videos
15:08
Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells
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Cited by 4 •
2012
We present a unique platform for characterizing electrode surfaces in solid oxide fuel cells (SOFCs) that allows simultaneous performance of multiple characterization techniques (e.g. in situ Raman spectroscopy and scanning probe microscopy alongside electrochemical measurements). Complementary information from these analyses may help to advance toward a more profound understanding of electrode reaction and degradation mechanisms, providing insights into rational design of better materials for...
01:16
Electrostatic Boundary Conditions
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2025
Consider an external electric field propagating through a homogeneous medium. When the electric field crosses the surface boundary of the medium, it undergoes a discontinuity. The electric field can be resolved into normal and tangential components. The amount by which the field changes at any boundary is given by the difference between the field components above and below the surface boundary. The surface integral of an electric field is given by Gauss's law in integral form and is related to...
06:48
Surface Mapping of Earth-like Exoplanets using Single Point Light Curves
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Cited by 2 •
2020
The protocol extracts information from light curves of exoplanets and constructs their surface maps. It uses light curves of Earth, which serves as a proxy exoplanet, to demonstrate the approach.
11:03
Motor Maps
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2023
Source: Laboratories of Jonas T. Kaplan and Sarah I. Gimbel—University of Southern California One principle of brain organization is the topographic mapping of information. Especially in sensory and motor cortices, adjacent regions of the brain tend to represent information from adjacent parts of the body, resulting in maps of the body expressed on the surface of the brain. The primary sensory and motor maps in the brain surround a prominent sulcus known as the central sulcus. The cortex...
01:27
Electrostatic Boundary Conditions in Dielectrics
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2023
When an electric field passes from one homogeneous medium to another, crossing the boundary between the two mediums imparts a discontinuity in the electric field. This results in electrostatic boundary conditions that depend on the type of mediums the field propagates through. Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's permittivity.
FAQs
Atomic coordinates and partial charges provide the molecular framework for the calculation, while solvent properties and ionic strength influence the modeled electrostatic potential. These settings matter because the displayed charge pattern depends on both molecular structure and environmental assumptions. Consistent input and calculation conditions therefore help researchers compare related structures, including a protein and its variants.
Positive and negative regions identify areas with contrasting electrostatic character, whereas near-neutral regions show limited calculated potential. Researchers examine their location and arrangement to evaluate how charge patterns may contribute to molecular recognition and binding. Comparing complementary or contrasting surface features can therefore connect a structural map with possible protein, ligand, or nucleic acid interaction behavior.
A mutation may alter the local distribution of surface potential, even when the broader molecular structure remains under comparison. Mapping the original and altered forms lets researchers assess whether charge-pattern changes could help explain differences in molecular behavior. This comparison links a specific sequence change with structural and electrostatic consequences relevant to biological function.
A typical workflow begins with atomic coordinates and assigned partial charges, followed by calculation of the electrostatic potential across or around the molecular surface. The calculation can incorporate solvent properties and ionic strength before the resulting values are displayed as positive, negative, or near-neutral regions. Researchers then interpret those patterns in the context of molecular structure and function.
The method is useful when researchers need to relate surface charge patterns to molecular recognition or ligand binding. Examining the mapped regions can reveal how electrostatic features are positioned across a protein or binding-related surface, supporting structural interpretation and biomolecular modeling. These results can help formulate explanations for observed interactions and guide rational experimental design.
For nucleic acid interaction studies, electrostatic maps provide a structural view of charge patterns that may contribute to how molecules recognize and associate with one another. Researchers can compare these patterns across molecular models, assess their relationship to proposed interactions, and use the observations to develop testable structural hypotheses. This makes mapping useful for planning experiments alongside broader biomolecular analysis.