Enhanced Transition-Temperature Reduction in a Half-Sphere Au/VO2 Core-Shell Structure: Local Plasmonics versus Induced Stress and Percolation Effects
| Autor: | Igal Balin, Ibrahim Abdulhalim, Shancheng Wang, Yi Long, Peikui Wang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Thermochromism
Materials science Condensed matter physics Transition temperature Structure (category theory) Physics::Optics General Physics and Astronomy 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Core (optical fiber) Reduction (complexity) Percolation 0103 physical sciences Limiter 010306 general physics 0210 nano-technology Plasmon |
| Zdroj: | Physical Review Applied. 11 |
| ISSN: | 2331-7019 |
| Popis: | VO${}_{2}$, with its reversible metal-insulator transition accompanied by drastic change in optical properties, is a promising material for numerous applications, including energy-saving smart windows. The transition occurs near 68 \ifmmode^\circ\else\textdegree\fi{}C, which is too high for building-type applications, but this temperature can be tuned by varying the Au core size in Au/VO${}_{2}$ core-shell nanoparticles---and the physical mechanism is a bit unexpected. This research points the way to optimizaton of this thermochromic material for switching devices, optical waveguides and limiters, sensing components, tunable metamaterials, and smart windows. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|