Publications by authors named "V V Kondratev"
Semiconductor nanowires are known for their unusual geometry, providing unique electronic and optical properties. Substrates with vertical nanowires have highly non-uniform surfaces, which are attractive in terms of the study of live cells that can interact and be labeled with the wires. Despite several previous works studying cells cultivated over nanowires, questions regarding cell rupture and interaction with the wires remain open.
View Article and Find Full Text PDFGiant cervical lipoma adjacent to carotid artery: a case report and literature review.
Zh Vopr Neirokhir Im N N Burdenko
August 2024
Article Synopsis
- Cervical lipomas that compress neurovascular structures are very rare and usually require surgical removal, particularly when they cause symptoms like dysphagia or breathing difficulties.
- A case study presented a 57-year-old patient who had a large cervical lipoma that compressed the oropharynx and esophagus, necessitating a gross total resection while carefully navigating important nerves and blood vessels.
- Post-surgery, the patient saw improvement in symptoms and was discharged after four days, highlighting that such surgical procedures, though complex, can successfully minimize complications in specialized medical centers.
Emerging technologies for integrated optical circuits demand novel approaches and materials. This includes a search for nanoscale waveguides that should satisfy criteria of high optical density, small cross-section, technological feasibility and structural perfection. All these criteria are met with self-assembled gallium phosphide (GaP) epitaxial nanowires.
View Article and Find Full Text PDFSemiconductor nanowires are the perfect platform for nanophotonic applications owing to their resonant, waveguiding optical properties and technological capabilities providing control over their crystalline and chemical compositions. The vapor-liquid-solid growth mechanism allows the formation of hybrid metal-dielectric nanostructures promoting sub-wavelength light manipulation. In this work, we explore both experimentally and numerically the plasmonic effects promoted by a gallium (Ga) nanoparticle optical antenna decorating the facet of gallium phosphide (GaP) nanowires.
View Article and Find Full Text PDFArticle Synopsis
- Zinc oxide (ZnO) nanostructures are valuable in science and technology, and developing methods for controlling their growth is crucial for enhancing their optical and electronic properties.
- This study employs hydrothermal synthesis with surfactants to create various shapes of ZnO nanostructures, which are analyzed using photoluminescence (PL) spectroscopy.
- The results show that different growth conditions and surfactants significantly influence the emission characteristics of the nanostructures, indicating potential applications in nanophotonics and light sources.