Results 1 to 10 of about 8,026 (118)

Ultra-Wideband and Narrowband Switchable, Bi-Functional Metamaterial Absorber Based on Vanadium Dioxide

open access: yesMicromachines, 2023
A switchable ultra-wideband THz absorber based on vanadium dioxide was proposed, which consists of a lowermost gold layer, a PMI dielectric layer, and an insulating and surface vanadium dioxide layer.
Xiaoyan Wang   +4 more
doaj   +3 more sources

Preparation of V2O5 and SnO2 Nanoparticles and Their Application as Pollutant Removal [PDF]

open access: yesJournal of Applied Sciences and Nanotechnology, 2021
Vanadium pentoxide and Tin dioxide nanoparticles were prepared by hydrothermal methods to remove methylene blue (MB) and bromothymol blue (BTB) dyes). First the prepared nanoparticles were heated at different temperature (90 oC and 500 oC).
Zahra Hassan, Rashed Rasheed
doaj   +1 more source

State Switching of Terahertz Reflection and Orbital Angular Momentum in Phase Change Metasurfaces

open access: yesIEEE Photonics Journal, 2022
Metasurfaces with dynamically switchable functions have received extensive attention, and are in high demand in various applications. In this work, dynamically switchable metasurfaces are proposed based on phase change material-vanadium dioxide.
Changqing Li, Canhui He, Zhengyong Song
doaj   +1 more source

Switchable optics based on guided mode resonance in lithographically patterned vanadium dioxide [PDF]

open access: yesEPJ Web of Conferences, 2022
Vanadium dioxide as a phase change material is usually known for its consideration in smart window applications. However, the attention shifts to using it in actively switched optical elements.
Walther Markus   +3 more
doaj   +1 more source

Active manipulation of toroidal resonance in hybrid metal-vanadium dioxide metamaterial

open access: yesResults in Physics, 2022
A switchable toroidal resonance metamaterial consisted of hybrid metal-vanadium dioxide is proposed in this paper. The excitation of toroidal resonance is demonstrated numerically and analyzed theoretically.
Chang Shu   +3 more
doaj   +1 more source

Recent advances of chemical vapor deposited thermochromic vanadium dioxide materials

open access: yesEnergy Nexus, 2023
Thermochromic materials have gained significant attention for their potential in smart windows, as they can change color in response to infrared transmission.
Emmanuel Koudoumas   +2 more
doaj   +1 more source

Thin Vanadium Dioxide Films for Use in Microwave Keys with Electric Control

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2023
Introduction. In view of the ever-tightening bandwidth requirements for wireless communication systems, the use of tunable or switching devices based on microwave keys is becoming increasingly popular.
Ilya D. Neustroev   +3 more
doaj   +1 more source

Optimization of the technology for the production of ammonium tetravate to obtain the nanocrystalline vanadium dioxide. [PDF]

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2018
The article is devoted to the influence of technological parameters of the synthesis of ammonium tetravanadate on the size of the particles of the final product of vanadium dioxide. Nanosized vanadium dioxide allows you to create the electronic elements
Катерина Вікторівна Лускань   +2 more
doaj   +2 more sources

Tunable Infrared Optical Switch Based on Vanadium Dioxide

open access: yesNanomaterials, 2021
A tunable infrared optical switch based on a plasmonic structure consisting of aluminum nanoarrays with a thin film of vanadium dioxide is proposed. This optical switch can realize arbitrary wavelength-selective optical switching in the mid-infrared ...
Qi Wang   +5 more
doaj   +1 more source

Influence of the parameters of thermal decomposition of ammonium tetravanadate on the processes of phase formation of highly dispersed vanadium oxides. [PDF]

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2018
The peculiarities of the thermal decomposition of the highly dispersed vanadium (IV) ammonium tetrabutanate salt, which is a precursor for the production of nanocrystalline vanadium oxides of different degrees of oxidation (V2O5, VO2), are studied.
Luskan К.   +4 more
doaj   +1 more source

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