Bragg coherent diffraction imaging of Pt nanoparticles on sapphire

Bragg coherent diffraction imaging (BCDI) is a powerful X-ray technique employed to investigate individual platinum (Pt) nanoparticles supported on sapphire substrates. By analyzing coherent X-ray diffraction patterns, BCDI reconstructs three-dimensional images of the internal strain and defect distribution within single nanoparticles at nanometer-scale resolution. Understanding these nanoscale features is essential for elucidating the mechanisms of particle growth, coarsening, and interaction with the sapphire support. The insights gained through BCDI contribute significantly to the design and optimization of Pt-based catalysts and functional nanomaterials for energy, electronics, and surface science applications.

布拉格相干衍射成像（Bragg coherent diffraction imaging，BCDI）是一种强大的X射线检测技术，用于研究负载于蓝宝石衬底上的单颗铂（Pt）纳米颗粒。通过分析相干X射线衍射图样，该技术可在纳米级分辨率下重构单颗纳米颗粒内部的应变与缺陷分布的三维图像。明晰此类纳米尺度特征，对于阐明纳米颗粒的生长、熟化机制及其与蓝宝石衬底的相互作用机制至关重要。通过该技术获取的研究成果，可为面向能源、电子与表面科学应用的铂基催化剂及功能纳米材料的设计与优化提供重要支撑。