AI Article Synopsis
- - The study focuses on how strain relaxation occurs in GaSb films grown on GaAs(111)A using thin layers of InAs as interlayers.
- - When 1 or 2 monolayers (ML) of InAs are used, they create a layer that causes tensile strain in the GaSb films, while thicker InAs layers (3 ML or more) lead to compressive strain.
- - At thicknesses above 5 ML, the InAs layer is less effective at relieving strain, resulting in residual strain in GaSb films and contributing to increased peak width in X-ray rocking curves, indicating elastic deformation.
Article Abstract
We have systematically studied the strain relaxation processes in GaSb heteroepitaxy on GaAs(111)A using thin InAs interlayers. The growth with 1 ML- and 2 ML-InAs leads to formation of an InAsSb-like layer, which induces tensile strain in GaSb films, whereas the GaSb films grown with thicker InAs layers (≥3 ML) are under compressive strain. As the InAs thickness is increased above 5 ML, the insertion of the InAs layer becomes less effective in the strain relaxation, leaving residual strain in GaSb films. This leads to the elastic deformation of the GaSb lattice, giving rise to the increase in the peak width of X-ray rocking curves.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6643550 | PMC |
| http://dx.doi.org/10.1021/acsomega.8b02359 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Introduction: During centrifuge-simulated suborbital spaceplane flights, launch and re-entry frequently cause visual symptoms, and G-induced loss of consciousness can occur. G-related effects may be more prominent during re-entry from microgravity on actual flights. A modified anti-G maneuver that does not involve a breath strain and is suitable for members of the public may be effective against these effects.
View Article and Find Full Text PDFComparative analysis between genotypes of adenovirus isolates from hospitalized children with acute respiratory tract infections and clinical manifestations in Wuhan, China, from June 2022 to September 2023.
Virol Sin
December 2024
Department of Laboratory Medicine, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430070, China; School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China. Electronic address:
Acute respiratory tract infections (ARTIs) are among the leading causes of morbidity and mortality in children worldwide. Human adenovirus (HAdV) infections are estimated to account for at least 5% of pediatric ARTIs. The circulated genotypes of HAdV and the correlation between genotype and clinical manifestations in Wuhan, China, before and after the complete relaxation of nonpharmaceutical interventions against severe acute respiratory syndrome coronavirus 2, remain unknown.
View Article and Find Full Text PDFInterplay of chain dynamics and ion transport on mechanical behavior and conductivity in ionogels.
Soft Matter
December 2024
South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China.
Understanding the interplay among the mechanical behavior, ionic conductivity and chain dynamics of ionogels is essential for designing flexible conductors that exhibit both high conductivity and excellent mechanical properties. In this study, ionogels were synthesized the radical polymerization of ,'-dimethylacrylamide (DMAA) and methacrylic acid (MAAc) monomers in the presence of ionic liquid 1-ethyl-3-methylimidazolium trifluoromethane sulfonate ([EMIM][OTf]). By varying the mass content of ionic liquid within ionogels, we investigated the mechanical behavior and ionic conductivity at the macroscopic scale using tensile, rheological testing and electrochemical impedance spectroscopy, as well as the dynamic behavior of chain segments and ions within the network at the microscopic scale using broadband dielectric relaxation spectroscopy (BDS) over a broad temperature range.
View Article and Find Full Text PDFDecreased blood pressure with acute administration of quercetin in L-NAME-induced hypertensive rats.
Basic Clin Pharmacol Toxicol
January 2025
Wits Integrated Molecular Physiology Research Initiative, Wits Health Consortium, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
Quercetin is known to reduce blood pressure (BP); however, its acute effects are unclear. We investigated the acute effects of quercetin on BP, aortic mechanical properties and vascular reactivity in female Sprague-Dawley (SD) rats. Hypertension was induced using L-NAME (40 mg/kg/day).
View Article and Find Full Text PDFBending Moiré in Twisted Bilayer Graphene.
J Phys Chem Lett
December 2024
CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China.
Moiré potentials caused by lattice mismatches significantly alter electrons in two-dimensional materials, inspiring the discovery of numerous unique physical properties. While strain modulates the structure and symmetry of the moiré potential, serving as a tuning mechanism for interactions, the impact of out-of-plane deformation, e.g.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!