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Luminescence Properties of Fly-Ash || A Project Presentation

Fly ash, a byproduct of coal combustion in power plants, exhibits intriguing luminescence properties due to its unique composition and structure. These properties are influenced by the presence of various mineral impurities such as quartz, feldspar, and other silicates, which can emit light when excited by certain wavelengths. Key Luminescence Properties of Fly Ash: Photoluminescence: Fly ash can exhibit photoluminescence, where it absorbs photons and re-emits them as visible light. This is often due to the presence of rare earth elements and transition metals within the ash1. Thermoluminescence: When heated, fly ash can release stored energy in the form of light. This property is useful for dosimetric applications, where the amount of light emitted can be correlated to the radiation dose received2. Cathodoluminescence: Under electron bombardment, fly ash can emit light, which is valuable for studying the microstructure and composition of the material3. Persistent Luminescence: Some fly ash samples show persistent luminescence, where they continue to emit light even after the excitation source is removed. This is due to the trapping of charge carriers in defects within the material4. These luminescence properties make fly ash a potential candidate for various applications, including environmental monitoring, radiation dosimetry, and even in the development of new luminescent materials for lighting and display technologies. Nature Physics, mzkhan, MZKHAN, Dr M Z KHAN, youtubeshorts,   / dr_m_z_khan  , youtubevideo, you tube video, chandrayan3, moon, physics, material science, Luminescence. #mzkhan #materialsscience #physics #flyashbricksmachine #flyash