In situ X-ray tomography of aqueous foams: Analysis of columnar foam generation

In situ X-ray tomography of aqueous foams: Analysis of columnar foam generation
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水性泡沫的原位 X 射线断层扫描:柱状泡沫生成分析

DOI:
10.1016/j.colsurfa.2017.03.011
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发表时间:
2017
期刊:
Colloids and Surfaces A: Physicochemical and Engineering Aspects
影响因子:
--
通讯作者:
J. Banhart
J. Banhart
中科院分区:
--
文献类型:
--
作者:
F. García-Moreno;P.H. Kamm;T. Neu;K. Heim;A. Rack;J. Banhart

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在液体中上升并形成泡沫的气泡的积累是一个复杂的过程,由于当使用光学显微镜时泡沫深度中气泡的可见性差,因此难以在三维中观察和描述该过程。我们在相衬模式下应用原位X射线断层扫描,以可视化几乎相同大小的气泡如何积聚并形成限制在含水液体中的垂直管内的泡沫。通过在每个气泡到达后捕获泡沫的完整3D图像并单独跟踪每个气泡,可以明确地描述气泡的集体运动、位移和位置变化。
The accumulation of bubbles rising in a liquid and forming a foam is a complex process which is difficult to observe and describe in three dimensions due to the poor visibility of bubbles in the depth of a foam when using optical microscopes. We applied in situ X-ray tomography in phase-contrast mode to visualise how bubbles of almost equal size accumulate and form a foam confined within a vertical tube in an aqueous liquid. By capturing a full 3D image of the foam after the arrival of each bubble and tracking each bubble individually, collective movements of bubbles, displacements and changes of positions could be described unambiguously.
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