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Fluorine-doped VOsub>2</sub>(M) nanoparticles have been successfully synthesized using the hydrothermal method at a supercritical temperature of 490°C. The pristine VO<sub>2</sub>(M) has the critical phase transformation temperature of 64°C. The morphology and homogeneity of the monoclinic structure VO<sub>2</sub>(M) were adopted by the fluorine-doped system. The crystallinity and particle size were reduced the bigger the concentration of fluorine doping. The obtained particle size of the samples is smaller at the higher concentration of anion doping. The best reduction of critical temperature was achieved by fluorine doping of 0.13% up to 58°C. The thin films of the fluorine-doped VO<sub><sub>2</sub></sub>(M) showed pronounced thermochromic property and therefore is suitable for smart window applications.
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A CHROMATOGRAPHY method using supercritical fluid, usually carbon dioxide under very high pressure (around 73 atmospheres or 1070 psi at room temperature) as the mobile phase. Other solvents are sometimes added as modifiers. This is used both for analytical (SFC) and extraction (SFE) purposes.
Unstable isotopes of fluorine that decay or disintegrate emitting radiation. F atoms with atomic weights 17, 18, and 20-22 are radioactive fluorine isotopes.
Inorganic compounds that contain fluorine as an integral part of the molecule.
Magnetic resonance imaging diagnostic technique which uses fluorine-19 perfluorocarbon probes and contrast agents for high resolution image detection and quantitation.
Measurement of the temperature of a material, or of the body or an organ by various temperature sensing devices which measure changes in properties of the material that vary with temperature, such as ELASTICITY; MAGNETIC FIELDS; or LUMINESCENCE.