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Optical Tech Improves Heat Transfer

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LOS ANGELES, April 30, 2021 — Researchers from UCLA have demonstrated a class of optical materials that control how heat radiation is directed from an object. The advance could improve the efficiency of energy conversion systems and enable more effective sensing and detecting technologies. The work involves a special class of materials that manipulate how thermal radiation travels through such materials, similar to the way that overlapping blinds direct the angle of visible light through a window. Silicon wafers coated with the gradient ENZ materials viewed through a thermal imaging camera. Courtesy of Raman...Read full article

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    Published: April 2021
    Glossary
    infrared
    Infrared (IR) refers to the region of the electromagnetic spectrum with wavelengths longer than those of visible light, but shorter than those of microwaves. The infrared spectrum spans wavelengths roughly between 700 nanometers (nm) and 1 millimeter (mm). It is divided into three main subcategories: Near-infrared (NIR): Wavelengths from approximately 700 nm to 1.4 micrometers (µm). Near-infrared light is often used in telecommunications, as well as in various imaging and sensing...
    radiation
    The emission and/or propagation of energy through space or through a medium in the form of either waves or corpuscular emission.
    Research & TechnologyOpticsthermalinfraredheatheat dispersionradiationscienceUCLAAmericasMaterialsSensors & Detectors

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