Results 11 to 20 of about 1,051,337 (157)
Visible‐Light‐Excited Optical Thermometry in Ca3Sc2Si3O12: Er3+ via an Efficient Eu2+ Bridge
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Er3+ ions are promising for optical thermometry due to their thermally coupled levels. However, their parity‐forbidden transitions result in weak and narrowband absorption, which restricts excitation to infrared lasers (e.g., 808, 980, or 1550 nm). Moreover, the single emission center inherently limits temperature sensitivity. In this work, we
Yi Liu +6 more
wiley +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT In conventional photoconductive detectors, the shared collection path for dark current and photocurrent imposes a fundamental compromise between noise suppression and signal responsivity. To break this trade‐off, we introduce a device architecture featuring a strategically integrated third electrode within a MAPbI3/Nb2CTx heterostructure. This
Yan‐Wei Lv +7 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT In this work, In2O3 and three rare earth (RE)‐doped In2O3 composites (Ho, Yb, and Sm‐doped) were prepared via the hydrothermal method. Compared with In2O3 sensors, those fabricated from the three composite materials (RE–In2O3) exhibit varying degrees of enhanced response toward ethylene glycol (EG) gas. At 35% relative humidity (RH) and 250°C,
Chang Liu +9 more
wiley +1 more source
Guangtongxin yanjiu, 1984 本文介绍长波长pin光电二极管、APD雪崩光电二极管和HPT’S光电晶体管目前水平,并对这三种器件的接收灵敏度进行比较。pin-FET组合件用于长波长直接检测的数字光通信系统,当速率在几百Gb/s以内时,其灵敏度比Ge-APD接收灵敏度高;但是,当速率在1Gb/s以上时,Ge—APD的灵敏度却比pin—FET组合件的灵敏度高。Ⅲ-V族InGaAs、InGaAsP—APD和GaAs—FET组成接收器的灵敏度,在所有的速率上都比pin—FET组合件和InGaAs、InGaAsP异质结光电晶体管接收灵敏度高 ...
胡永林
doaj
Atom Probe Tomography‐Based Analysis of Residual Trace Elements in Advanced Metallic Materials
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Residual trace elements inherited from raw materials strongly influence the mechanical and environmental performance of advanced metallic alloys and recycling materials due to preferable boundary/interface segregation and resultant embrittlement effects, yet their parts per million level concentrations pose significant challenges to ...
Congcong Li +17 more
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, 1987 本文分析了象差函数对光学传递函数的性态影响,指出在用白光主观散斑法测量曲面变形时,由于成象系统不能对曲面上各点同时对焦,各物点有不同程度的离焦,而造成光学传递函数对频率响应的下降,有效截止频率的降低 ...
屠美容
core +2 more sources
Methods in Ecology and Evolution, Volume 17, Issue 6, Page 1896-1909, June 2026.Abstract Molecular identification of insect food webs can accurately reveal complex trophic interactions and serve as a foundation for understanding ecosystem functioning and advancing biodiversity conservation. This process typically involves DNA library construction, high‐throughput sequencing and subsequent steps, including data assembly, annotation,
Xiao‐man Zhang +9 more
wiley +1 more source
Guangtongxin yanjiu, 2001 改变 2 .5Gbit/s光发射模块消光比 （ EX） ,对作为标准接收用的光接收机灵敏度进行了测试 .实验表明 ,EX小于 9.0时 ,光接收灵敏度较差 ;EX大于 1 5.0时 ,由于眼图中交叉点偏低或光脉冲波形畸变 ,可能导致光接收灵敏度恶化 ;EX在 9.0～ 1 2 .0范围时 ,光接收灵敏度最佳 .
丁国庆, 邓柱斌
doaj
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Early diagnosis of liver cancer demands high sensitivity, high specificity, convenience and real‐time monitoring capabilities. However, it encounters challenges such as low concentration of markers, numerous interfering factors, and limitations of detection technologies.
Changsheng Shi +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT The residue of mesotrione poses an increasingly serious threat to the environment and human health. Thus, it is essential to establish a platform that integrates rapid detection and efficient degradation. Covalent organic frameworks (COFs) materials have garnered significant attention owing to their designability.
Yong Xie +3 more
wiley +1 more source