Amorphous Vanadium Oxide
Amorphous Vanadium Oxide - Related Videos
08:25
Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene
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Cited by 15 •
2015
We present the synthesis of the organic-based ferrimagnet vanadium tetracyanoethylene (V[TCNE]x, x~2) via low temperature chemical vapor deposition (CVD). This optimized recipe yields an increase in Curie temperature from 400 K to over 600 K and a dramatic improvement in magnetic resonance properties.
01:21
Factors Affecting Dissolution: Polymorphism, Amorphism and Pseudopolymorphism
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2024
Polymorphism refers to the existence of a drug substance in multiple crystalline forms, known as polymorphs. Recently, this term has been expanded to include solvates (forms containing a solvent), amorphous forms (non-crystalline forms), and desolvated solvates (forms from which the solvent has been removed). Some polymorphic crystals possess lower aqueous solubility than their amorphous counterparts, leading to incomplete absorption. For instance, the oral suspension of Chloramphenicol, which...
03:14
Oxidation Numbers
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2020
In redox reactions, the transfer of electrons occurs between reacting species. Electron transfer is described by a hypothetical number called the oxidation number (or oxidation state). It represents the effective charge of an atom or element, which is assigned using a set of rules. Oxidation Number (Oxidation State) In the case of an ionic compound, oxidation numbers are assigned based on the number of electrons transferred between reacting species. For example, in the formation of calcium...
09:23
Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability
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Cited by 6 •
2015
Production bleed water (PBW) was treated with cupric oxide nanoparticles (CuO-NPs) and cellular toxicity was assessed in cultured human cells. The goal of this protocol was to integrate the native environmental sample into a cell culture format assessing the changes in toxicity due to CuO-NP treatment.
01:15
Pyruvate Oxidation
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2019
After glycolysis, the charged pyruvate molecules enter the mitochondria via active transport and undergo three enzymatic reactions. These reactions ensure that pyruvate can enter the next metabolic pathway so that energy stored in the pyruvate molecules can be harnessed by the cells. First, the enzyme pyruvate dehydrogenase removes the carboxyl group from pyruvate and releases it as carbon dioxide. The stripped molecule is then oxidized and releases electrons, which are then picked up by NAD+...
FAQs
Multiple vanadium oxidation states allow the material to participate in reversible redox reactions, in which its chemical state changes as charge is added or removed. This redox flexibility is central to charge storage because electrical energy can be associated with those reversible changes. In engineering designs, controlling composition helps tune how effectively this behavior supports a target device.
Flexible sites created by the disordered structure can accommodate ion movement during operation. That movement works alongside reversible redox reactions, allowing the material to respond as electrical conditions change. For rechargeable battery electrodes and related charge-storage systems, this combination is important because engineers must consider both ion transport and the material’s ability to undergo repeated chemical changes.
Engineers can tune composition, conductivity, optical response, and cycling stability according to the intended application. Composition is relevant to the material’s electrochemical behavior, conductivity affects its electrical function, and optical response matters in devices that change their appearance or transmission. Cycling stability becomes especially important when repeated operation is required, such as in rechargeable systems.
The lack of long-range atomic order provides a different design environment from a crystalline material, including multiple oxidation states and sites that support ion movement. These features can give engineers flexibility when designing responsive materials rather than relying only on a fixed crystal arrangement. The resulting behavior is relevant to electrical, chemical, and optical responses in functional devices.
Evaluation should connect the material’s composition with conductivity, optical response, and cycling stability, then relate those properties to the intended device function. A battery electrode requires attention to reversible charge storage and repeated operation, whereas an electrochromic or sensing device emphasizes response to electrical or chemical changes. This application-specific comparison helps guide material selection and tuning.
In electrochromic devices, the material can provide an optical response when electrical conditions change. In sensors, it can respond to chemical changes, making its state useful for detecting or representing an external stimulus. Its reversible redox behavior and adjustable properties support these functions, while engineering optimization focuses on matching conductivity and optical response to the required device performance.
Thin-film electronics can use its functional electrical behavior in compact material layers, while rechargeable battery electrodes can use reversible redox reactions and ion movement for charge storage. These applications require different performance priorities. Electronics may emphasize conductivity and response, whereas batteries also require cycling stability so that the electrode remains useful during repeated charging and discharging.
Research can clarify how composition affects conductivity, optical response, redox behavior, and cycling stability. Those relationships help engineers determine whether a sample is better suited to electrochromic devices, sensors, thin-film electronics, or rechargeable battery electrodes. The broader outcome is a basis for designing next-generation energy and sensing technologies with properties matched to their operating requirements.