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神经场增强阶段检索辐射敏感材料中的原子尺度结构动态

Yang Liu¹, Hongsheng Shi², Siyuan Shen³

¹School of Information Science and Technology, ShanghaiTech University, Shanghai, 201210, China; School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China; Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai, 201210, China.

Ultramicroscopy

|November 27, 2025

概括

研究人员开发了一种新的相检索方法,将神经场 (NF) 和退出波重建 (EWR) 结合起来,用于使用低剂量传输电子显微镜 (TEM) 进行高质量的辐射敏感材料原子尺度成像. 这种EWR-NF技术从最小的数据中揭示了原子细节,使微妙结构的精确分析成为可能.

科学领域:

材料科学材料科学材料科学
生命科学生命科学
显微镜的使用方法

背景情况:

由于辐射损伤,对辐射敏感材料的原子尺度成像具有挑战性.
低剂量传输电子显微镜 (TEM) 尽量减少损伤,但产生噪音,低分辨率的图像.
敏感材料的细结构分析需要改进的成像技术.

研究的目的:

介绍一种新的相位检索方法,用于对辐射敏感材料的高质量原子尺度成像.
克服低剂量TEM在分析微妙结构方面的局限性.
为了能够在电子辐射下对化物矿等材料进行详细的分析.

主要方法:

神经场 (NF) 与传统的退出波重建 (EWR) 的整合.
在低剂量TEM成像中应用EWR-NF方法.
从有限的低剂量实验数据中重建原子结构.

主要成果:

该EWR-NF方法成功地从最小的低剂量TEM数据中揭示了原子细节.
在重建甲基化 (MAPbI3) 的原始原子结构方面具有卓越的性能.
启用了辐射诱导分解中间体的更高时间分辨率成像.

结论:

EWR-NF提供了一种强大的工具,用于对敏感的化 Perowskites 的原子层结构分析.
该方法有助于理解辐射引起的材料结构变化.
对材料科学和需要敏感样本分析的相关领域有广泛的影响.

关键词:

退出波的重建退出波的重建低剂量的低剂量有机无机杂交化物洛夫斯基特.敏感的辐射敏感的辐射

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