thermal
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Physics
Advances in unidirectional heat flow: the next era of quantum thermal diodes
Quantum thermal diode model based on qubit and qutrit. Due to its asymmetric design, this system behaves as a thermal diode when connected between two thermal buses. Credit: APL Quantum (2024). DOI: 10.1063/5.0237842 Thermal management at the nanoscale has long been the basis for advanced technological applications, from high-performance electronics to quantum computing. To address this important challenge, we have…
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Nanotechnology
Scientists develop coating that enhances thermal imaging through hot windows
Breaks the loss symmetry of coupled resonant emitters and enhances thermal image contrast. Credit: Communication Engineering (2024). DOI: 10.1038/s44172-024-00316-y A team of Rice University scientists has solved a long-standing problem in thermal imaging, making it possible to capture clear images of objects through hot windows. The findings reported in the journal Communications Engineering could benefit imaging applications in a variety…
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Environment
Improving urban thermal risk models by burning in building details
ORNL scientists added 3D building features to a weather model of Washington, D.C., to create an accurate simulation of the building’s thermal impact on nearby neighborhoods during a heat wave. This study supports quantitative analysis of heat risk for at-risk populations. Credit: ORNL, U.S. Department of Energy Scientists at the Department of Energy’s Oak Ridge National Laboratory have developed the…
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Nanotechnology
Unlocking efficiency in next-generation chips: Researchers confirm thermal insights in small circuits
Microstructure of as-deposited and annealed copper films. (a–c) STEM images of as-deposited ~27 nm PVD, ~44 nm PVD-EP, and ~118 PVD films, respectively. The morphology of these films after annealing at 500 °C is shown in (d–f). The micrographs show representative areas of the as-deposited and annealed films. The grain size distributions of both the as-deposited and annealed films are…
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