Design and use of a flow cell for observing evolving solid-fluid interfaces in a scanning electron microscope

IF 2.2 3区工程技术 Q1 MICROSCOPY

Micron Pub Date : 2025-04-10 DOI:10.1016/j.micron.2025.103825

R. Podor , J. Salacroup , H.P. Brau , J. Lautru , S. Szenknect , A. Candeias

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Abstract

The development of a flow cell dedicated to the direct observation of the interaction between a fluid (the fluid being a gas or a liquid) and a solid in a scanning electron microscope is reported. This fluid flow cell has two main differences and advantages compared with existing devices. Firstly, it has been designed to allow direct observation of complex corrosion, dissolution, nucleation and/or growth processes taking place at solid materials surface. Secondly, the fluid circulates continuously in the cell maintaining constant chemical conditions thanks to the renewal of the fluid in contact with the solid. An electron-transparent SiN_x window is used to isolate the interior of the flow cell from the vacuum of the SEM chamber. The surface of the sample is observed by recording images in backscattered electron mode. The contrasts observed in this mode are in good agreement with the results of Monte-Carlo simulations of electron trajectories and backscattered electron emissions carried out on model systems. Monte-Carlo simulations are used to determine the operating limits of the flow cell.

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在扫描电子显微镜下设计和使用流动池来观察不断变化的固液界面

本文报道了一种专用于在扫描电子显微镜下直接观察流体（流体为气体或液体）与固体之间相互作用的流动池的研制。与现有装置相比，该流体流动池有两个主要的区别和优点。首先，它的设计允许直接观察在固体材料表面发生的复杂腐蚀、溶解、成核和/或生长过程。其次，流体在细胞中不断循环，由于与固体接触的流体的更新，保持恒定的化学条件。一个电子透明的SiNx窗口被用来将流动池内部与SEM室的真空隔离开来。通过在背散射电子模式下记录图像来观察样品表面。在这种模式下观察到的对比与在模型系统上进行的电子轨迹和背散射电子发射的蒙特卡罗模拟结果很好地吻合。采用蒙特卡罗模拟确定了流动池的工作极限。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Micron 工程技术-显微镜技术

CiteScore

4.30

自引率

4.20%

发文量

100

审稿时长

31 days

期刊介绍： Micron is an interdisciplinary forum for all work that involves new applications of microscopy or where advanced microscopy plays a central role. The journal will publish on the design, methods, application, practice or theory of microscopy and microanalysis, including reports on optical, electron-beam, X-ray microtomography, and scanning-probe systems. It also aims at the regular publication of review papers, short communications, as well as thematic issues on contemporary developments in microscopy and microanalysis. The journal embraces original research in which microscopy has contributed significantly to knowledge in biology, life science, nanoscience and nanotechnology, materials science and engineering.