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相关概念视频

Photoluminescence: Applications01:14

Photoluminescence: Applications

386
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
386

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相关实验视频

Updated: Jun 23, 2025

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
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迈向核心外工程,以实现高效的发光和温度传感.

Hanyu Xu1, Kejie Li1, Mengmeng Dai1

  • 1Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China.

Journal of colloid and interface science
|June 14, 2024
PubMed
概括
此摘要是机器生成的。

核心外纳米粒子具有战略性的惰性和活性层,可显著提升转换发光和温度传感. 这项研究突出了它们在增强光学性能和实现敏感热检测方面的关键作用.

关键词:
核心-外结构 核心-外结构兰化物是多巴胺的使用者.光学材料是一种光学材料.温度传感器是一种温度传感器.向上转换的发光效应

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术
  • 光子学是指光子学的使用方法.

背景情况:

  • 具有稀土兴奋剂的核心外纳米粒子对于先进的光学应用至关重要.
  • 了解活跃和惰性外层之间的协同效应是优化性能的关键.

研究的目的:

  • 合成和研究基于Na的新型核心外纳米粒子,以增强向上转换发光和温度传感.
  • 探索惰性和活性层的战略布局对纳米粒子效率的影响.

主要方法:

  • 合成八种球形Na基核心外纳米颗粒的合成.
  • 在980nm和808nm激光激发下对上转换发光的评估.
  • 使用比率发光温度计评估温度传感能力.

主要成果:

  • NaYF4:Yb3+,Er3+@NaYF4和NaYF4@NaYF4:Yb3+,Nd3+核心外纳米结构显示了最佳的升级转换发光.
  • 纳入NaYbF4活性外显著增加了温度计中的相对灵敏度.
  • NaYF4:Yb3+,Nd3+,Er3+@NaYbF4显示最大相对灵敏度为1.12%K-1.

结论:

  • 惰性外层对于改善核心外设计中的上转换发光至关重要.
  • 活性外层对于实现高灵敏度温度检测至关重要.
  • 核心纳米结构的战略设计为先进的光学传感应用提供了途径.