控制和探测光学加热系统中的热量产生
Hairegu Tuxun1, Zefeng Cai1, Min Ji1
1School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, China.
Nanophotonics (Berlin, Germany)
|December 5, 2024
概括
像银纳米岛这样的等离子纳米结构在暴露于光线时产生热量,从而实现精确的温度控制. 这种可控制的加热可以调整稀土微粒发光的颜色,证明了先进应用的潜力.
科学领域:
- 纳米光子学和等离子学
- 光学材料科学科学 光学材料科学
- 在纳米级的热力学.
背景情况:
- 了解等离子体纳米结构中的光诱导加热对于需要精确热管理的应用至关重要.
- 在微米/纳米尺度上可靠的温度控制需要对相对于激光功率的局部温度分布进行分析.
- 银纳米岛 (Ag NI) 正在研究它们在局部光学加热应用中的潜力.
研究的目的:
- 设计和演示使用银纳米岛 (Ag NI) 进行微/纳米温度操纵的光学加热系统.
- 用光强度比技术研究热量产生和温度分布的现场检测.
- 在受控加热环境中探索稀土合微极管的温度依赖的上转换发光 (UCL).
主要方法:
- 采用银纳米岛 (Ag NI) 的光学加热系统的制造.
- 将AgNI暴露在近红外 (近红外) 激光中以诱导局部加热.
- 在现场监测使用光强度比率技术的温度分布.
- 从Y2O3:Yb3+/Er3+的温度依赖的向上转换发光 (UCL) 的表征.
主要成果:
- 光学加热系统实现了高达1458K的局部温度.
- 通过调整激发激光功率来证明温度控制.
- 来自单个Y2O3:Yb3+/Er3+的上转换发光的颜色通过操纵局部温度成功调整.
- 稀土微型矿石的颜色变化作为监测当地温度的指标.
结论:
- 可实现对等离子体加热的实时操纵,可以控制热等离子体效应.
- 开发的系统可以在微/纳米尺度上精确控制温度.
- 等离子体加热和稀土发光之间的相互作用为温度监测和光学输出调节提供了一种方法.
- 这项研究为许多实际应用开辟了道路,利用控制的纳米级热效应.
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