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Metamaterial Breaks Thermal Symmetry, Enables One-Way Heat Emission
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Metamaterial Breaks Thermal Symmetry, Enables One-Way Heat Emission
Scientists have created a groundbreaking metamaterial that breaks Kirchhoff’s law by emitting 43% more mid-infrared radiation in one direction than it absorbs. Built from layered InGaAs and tested at 512°F with a 5T magnetic field, the structure exhibits record thermal nonreciprocity. This breakthrough enables controlled one-way heat flow, a step toward thermal diodes and transistors. Unlike previous weak and narrowband effects, this design work…
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