基于兰化物的比度度发光纳米热量计的激发功率依赖性
Mochen Jia1, Mengyao Li1, Dan Li2
1Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Zhengzhou 450052, China.
Nano letters
|November 20, 2024
概括
这项研究揭示了激发功率如何影响比度发光纳米热度. 一种新的校准方法可以考虑功率变化,从而提高使用基于兰化物的纳米热量计进行纳米尺度温度测量的准确性.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 频谱学是一种光谱学.
背景情况:
- 电比度发光纳米热量计使得远程纳米尺度温度绘制成为可能.
- 激发功率对纳米温度计性能的影响尚不清楚.
研究的目的:
- 为了研究基于兰化物的比度发光纳米热量计的激发功率依赖性.
- 开发一种独立于功率的校准方法,以提高温度准确度.
主要方法:
- 检查了Tm3+离子的非线性送过程.
- 在不同激发功率密度下分析了发光强度比 (LIR).
- 根据激发功率和LIR之间的指数关系推导出了一个新的校准曲线.
主要成果:
- 不同的Tm3+排放的斜率因子会导致激发功率的LIR偏差.
- 在温度之间观察到激发功率密度和LIR之间的指数关系.
- 绝对热敏度随着激发功率而变化,相对热敏度保持不变.
结论:
- 开发了一种强大的校准方法,适用于任何激发功率密度.
- 了解激发功率效应对于优化纳米温度计精度至关重要.
- 这项研究为更可靠的纳米尺度温度测量提供了途径.
相关概念视频
01:14Photoluminescence: Applications
377
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...
377
01:23Photoluminescence: Fluorescence and Phosphorescence
1.6K
Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...
A pair of electrons in a...
1.6K