Hinsley Gerard N, Westermeier Fabian, Wang Bihan, Ngoi Kuan Hoon, Singh Shweta, Rysov Rustam, Sprung Michael, Kewish Cameron M, van Riessen Grant A, Vartanyants Ivan A
Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, Hamburg 22607, Germany.
Center for Transformative Science, Shanghai Technical University, Shanghai 201210, China.
Nano Lett. 2024 Oct 30;24(43):13702-13707. doi: 10.1021/acs.nanolett.4c03699. Epub 2024 Oct 18.
The advent of diffraction limited sources and developments in detector technology opens up new possibilities for the study of materials and . Coherent X-ray diffraction techniques such as coherent X-ray diffractive imaging (CXDI) and X-ray photon correlation spectroscopy (XPCS) are capable for this purpose and provide complementary information, although due to signal-to-noise requirements, their simultaneous demonstration has been limited. Here, we demonstrate a strategy for the simultaneous use of CXDI and XPCS to study the Brownian motion of colloidal gold nanoparticles of 200 nm diameter suspended in a glycerol-water mixture. We visualize the process of agglomeration, examine the spatiotemporal space accessible with the combination of techniques, and demonstrate CXDI with 22 ms temporal resolution.
衍射极限光源的出现以及探测器技术的发展为材料研究开辟了新的可能性。相干X射线衍射技术，如相干X射线衍射成像（CXDI）和X射线光子相关光谱学（XPCS），能够实现这一目的并提供互补信息，尽管由于信噪比要求，它们的同时展示受到限制。在这里，我们展示了一种同时使用CXDI和XPCS来研究悬浮在甘油-水混合物中的直径为200纳米的胶体金纳米颗粒布朗运动的策略。我们可视化了团聚过程，研究了该技术组合可访问的时空空间，并展示了具有22毫秒时间分辨率的CXDI。
