双异质接口增强X射线激发的持久发光,用于低剂量3D成像
Lei Lei1, Minghao Yi2, Yubin Wang2
1Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou, 310018, P.R. China. leilei@cjlu.edu.cn.
Nature communications
|February 7, 2024
概括
化物纳米颗粒中的双异质接口可显著提升X射线激发的持续发光 (XEPL),用于先进的3D成像应用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 放射性成像学成像学
背景情况:
- 化物纳米粒子 (NP) 提供可调节的X射线激发持续发光 (XEPL) 用于3D成像.
- 目前的方法需要高X射线剂量和复杂的加热,限制效率和分辨率.
研究的目的:
- 为了提高XEPL强度在化NP中.
- 开发更安全,更有效的X射线成像技术.
主要方法:
- 在双纳米结构 (core@shell@shell) 中构建双重异质接口.
- 研究这种结构对表面被动化和陷度的影响.
- 在柔性膜中利用NP作为3D成像的闪光屏幕.
主要成果:
- 对于各种兰化物激活剂 (Dy, Pr, Er, Tm, Gd, Tb),XEPL强度显著提高.
- 核心@shell@shell结构减少了非辐射放松,增加了陷度.
- 使用延迟XEPL实现了手表内部结构的清晰3D成像.
结论:
- 双外NP中的双异质接口对促进XEPL有效.
- 这种方法可以实现更安全,高分辨率的3DX射线成像.
- 这些发现为先进的持续发光材料和成像技术铺平了道路.
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