在低温温度下进行博尔兹曼温度测量,利用Er3+/Yb3+-Codoped Yttrium Oxide纳米粒子中的Stark亚级
Thomas Possmayer1, Allison R Pessoa2,3, Jefferson A O Galindo3
1Chair in Hybrid Nanosystems, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539 München, Germany.
ACS applied materials & interfaces
|January 19, 2026
概括
研究人员使用Er3+/Yb3+-doped yttria纳米粒子开发了一种新的光学博尔兹曼温度计. 这种发光纳米温度计在25到175K的低温应用中实现了精确的温度监测.
科学领域:
- 纳米技术纳米技术
- 材料科学 材料科学 材料科学
- 量子光学是一种量子光学.
背景情况:
- 可靠的发光纳米热仪对于量子技术和超导系统至关重要.
- 添加兰化物材料被广泛使用,但通常是针对室温进行优化.
- 低温温度监测需要专门的,高空间分辨率的工具.
研究的目的:
- 为了展示一个光学博尔兹曼温度计用于冷应用使用Er3+/Yb3+ codoped yttria纳米粒子.
- 为了研究使用个别的斯塔克子级来提高温度表现.
- 为了验证有关温度计性能和能量差距校准的理论预测.
主要方法:
- 使用Er3+/Yb3+配角的yttria (Y2O3) 纳米粒子作为测温材料.
- 在Er3+离子的4S3/2多元体内利用个别的Stark亚级.
- 将发光强度比 (LIR) 方法应用于温度传感的特定Stark转换.
主要成果:
- 在25175 K.的温度范围内证明有效运行.
- 在100K时达到高热灵敏度高达1.22%K-1.
- 达到0.6K的温度分辨率,证实了理论预测.
结论:
- 个别的Stark亚级使Er3+/Yb3+:Y2O3纳米粒子中能够有效地进行冷温度测量.
- 在使用Stark过渡时,温度计的性能不仅仅取决于光谱线的分离.
- 这项工作为设计使用稀土合材料的先进冷温度计提供了基础.
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