在单个纳米粒子中实现多模态发光,用于X射线成像加密和防伪
Chao Wang1, Daiyuan Liu2, Guohui Wei1
1State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, and Guangdong Engineering Technology Research Center of Special Optical Fiber Materials and Devices, South China University of Technology, Guangzhou 51064, China.
Nano letters
|July 25, 2024
概括
研究人员开发了具有多模式发光的单个纳米粒子,结合了机械发光和光发光. 这些智能材料提供可调节的排放,用于像X射线成像和防伪等应用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 光学是什么?光学是什么?光学是什么?
背景情况:
- 单个纳米粒子中的多模态响应发光具有挑战性.
- 现有的材料往往缺乏对光以外的刺激的反应.
研究的目的:
- 在单个纳米粒子中开发多模式发光的概念模型.
- 为了同时实现机械发光和光发光.
- 在各种刺激下探索多样化的发光辐射.
主要方法:
- 构建化物纳米颗粒的化物中含有化物的化物,具有核心--结构.
- 使用X射线辐射来诱导机械发光.
- 设计多层核心外纳米结构,用于多模式排放.
主要成果:
- 在通过X射线照射的化物纳米粒子中显示出出色的机械发光.
- 通过选择不同的兰化物发射器,实现了可调色的机械发光.
- 在单个纳米粒子中启用了同时放射发光,持久发光,机械发光,上转换,下移和热刺激发光.
结论:
- 提供了对纳米晶体中X射线诱导的发光机制的新见解.
- 开发了先进的智能发光材料,用于X射线成像加密,压力传感和防伪.
相关概念视频
01:14Photoluminescence: 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
01:37Super-resolution Fluorescence Microscopy
6.9K
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
6.9K