Plasma Image-Calibrated Double-Pulse Laser-Induced Breakdown Spectroscopy for High-Precision Quantification of Light Rare Earth Elements in Geological Matrix 来源：ACS PublicationsAs critical strategic resources for modern high-tech industries, accurate quantitative analysis of light rare earth elements (LREEs) holds significant importance in resource exploration, new energy materials research, and ecological monitoring. Traditional laser-induced breakdown spectroscopy (LIBS) suffers from matrix effects and spectral interference, posing challenges to achieve high quantitative accuracy in low-conc...
Release time:
2025
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09
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30
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来源：ACS PublicationsSingle-mode lasers are of great importance due to their superior stability, low noise characteristic, high beam quality, and high spectral purity. Here, we employ thulium (Tm) and erbium (Er) codoped microcavities to demonstrate a mode suppression strategy in which Tm acts as a direct loss modificator for Er, suppressing low-gain competing modes by bringing them much higher absorption losses and then achieving lasing from a single high-gain mode. As a result, Er–Tm codoped multimode microcavities exhibit intrinsic single-mode lasing in the telecom band with a side-mode suppr...
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2025
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09
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29
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来源 ：ACS PublicationsThe interactions between substituted arylvinyl phosphonic acid (AVPA) ligands within a Eu-AVPA complex are shown to influence the outcomes of excited state evolution after photoexcitation. Compared with unfunctionalized AVPAs, pairs of ligands functionalized with CF3 in the para position preassociate in the ground state of complexes with Eu3+ according to calculated geometry optimizations. The CF3-substituted AVPA complexes show evidence of red-shifted optical absorption and undergo more efficient excimer formation, as revealed by transient absorption spectroscopy. We rati...
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2025
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09
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Dendritic Mesoporous Silica Structuring of Eu3+-Doped Ca2SiO4 Nanophosphors for Bioimaging and Luminescent Applications来源 ：ACS PublicationsRare-earth element-based nanophosphors are known for their exceptional optical properties, rendering them useful for applications in bioimaging and light-emitting diodes (LED). However, traditional phosphors often suffer from drawbacks such as photobleaching in organic dyes and toxicity of quantum dots. In this study, we address these challenges by employing dendritic mesoporous silica nanoparticles (DMSNs) as host materials for fabricating Eu3+-doped calci...
Release time:
2025
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09
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