来源：ACS PublicationsThe development of reliable luminescent nanothermometers for cryogenic applications is essential for advancing quantum technologies, superconducting systems, and other fields that require precise, high-spatial-resolution temperature monitoring. Lanthanide-doped systems are vastly employed to this purpose, and typically perform optimally at or above room temperature when manifold-to-manifold transitions are used. In this work we exploit individual Stark sublevels to demonstrate an optical Boltzmann thermometer based on Er3+/Yb3+ codoped yttria (Y2O3) nanoparticles that operat...
Release time:
2026
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来源：ACS PublicationsThe spin–orbit (SO) coupling is a key topic in lanthanide chemistry and physics since it is directly relevant to essential physicochemical properties of rare-earth materials, especially in spectroscopic, optical and magnetic domains. In this work, we systematically study different SO operators of relativistic Hamiltonians within both all-electron and pseudopotential (i.e., effective core potential) frameworks, and their impact on the microstate energy levels of the 4f-multiplets of trivalent lanthanide ions (Ln3+, Ln = Ce–Yb). It is found that some SO operators adapted for t...
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2026
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来源：ACS PublicationsCu is extensively used across various fields due to its excellent electrical conductivity, thermal conductivity, and machinability. However, it is prone to corrosion and biofouling in humid and contaminated environments, limiting its performance and durability. Herein, we report a Ce3+-driven electrooxidation method to construct uniform and dense Cu–Ce–O nanorods on ultrathin Cu foil (∼8.7 μm), achieving superhydrophobicity after subsequent fluorination. The incorporation of Ce salts into the electrolyte enables the controllable and rapidly oriented growth of nanorod structu...
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2026
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来源：ACS PublicationsThe popular Er3+–Yb3+ upconversion (UC) system generates green and red emissions under near-infrared (NIR) 980 nm excitation. The green emission is a two-photon process, whereas for the red emission two and three photon process are both possible, depending on host. Fluoride hosts generally favor a three-photon process because fluorides have low phonon energies and multiphonon relaxation (MPR) involved in the usual two-photon process is suppressed. However, CaF2:Er3+/Yb3+ exceptionally produces an intense two-photon upconverted red emission. Here, we show that the red UC emis...
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2026
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