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Generating a Fractal Microstructure of Laminin-111 to Signal to Cells
Published on: September 28, 2020
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Binding Site Transitions Across Strained Oxygenated and Hydroxylated Pt(111)
1School of Science and Technology Nottingham Trent University Nottingham NG11 8NS UK.
Chemistryopen
|June 7, 2018
Summary
Strain significantly alters how oxygen and hydroxyl groups bind to platinum surfaces. Compressive strain causes shifts in binding positions and surface reconstruction, affecting magnetism.
Area of Science:
- Surface science
- Materials science
- Computational chemistry
Background:
- Platinum (Pt) surfaces are crucial catalysts.
- Understanding adsorbate binding is key to catalysis.
- Strain engineering can tune surface properties.
Purpose of the Study:
- Investigate strain effects on O and OH binding on Pt(111).
- Analyze strain-induced surface reconstruction.
- Examine changes in surface magnetism.
Main Methods:
- Density functional theory (DFT) calculations.
- Modeling of oxygen and hydroxyl adsorption on Pt(111).
- Analysis of electronic structure and magnetic properties.
Main Results:
- Compressive strain induces a binding transition (bridge to FCC) for O on Pt(111).
- Significant reconstruction observed for OH on Pt(111) under compressive strain.
- Surface magnetism is reduced by oxygen adsorption via a delocalized mechanism.
Conclusions:
- Strain is a critical factor controlling adsorbate binding and surface structure on Pt(111).
- Adsorbate-induced magnetism is sensitive to strain and electronic structure.
- DFT provides insights into strain-mediated surface phenomena.
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