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Nanotechnology
Single-atomic metal layer reveals unexpected spin-polarized current control by light
When circularly polarized light is applied to a thallium-lead alloy, the majority of the electrons “up-spin” and flow in the correct direction (spin-polarized current). Credit: Taniuchi et al. 2025 Researchers at the University of Tokyo have demonstrated that the direction of spin-polarized current is restricted to only one direction in a single atomic layer of a thallium-lead alloy when irradiated…
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Physics
Scientists develop new model of electric double layer
Credit: CC0 Public Domain The new model takes into account a wide range of ion-electrode interactions and predicts the charge storage capacity of the device. The model’s theoretical predictions are consistent with the experimental results. Data on electric double layer (EDL) behavior can help develop more efficient supercapacitors for portable electronics and electric vehicles. The study was published in ChemPhysChem.…
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Environment
Report: Reducing methane emissions key to fighting climate change and harmful ozone layer
Credit: Pixabay/CC0 Public Domain Many human activities release methane into the atmosphere. Agriculture, landfills, wastewater, and fossil fuel production and distribution are the largest sources of methane. These account for approximately 60% of global methane emissions, with the remaining 40% coming from natural sources. Like carbon dioxide (CO2), methane is a potent greenhouse gas and is estimated to be responsible…
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Environment
What’s going on with the hole in the ozone layer?
Measurements by the Copernicus Sentinel-5P satellite in 2023 reveal an ozone hole over Antarctica. Credit: ESA (with corrections to 2023 Copernicus Sentinel data processed by DLR) Scientists first sounded the alarm about human-caused destruction of the ozone layer in 1974, but it took several more years before the international community reached an agreement to ban chemicals that damage the ozone…
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