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arXiv 1809.08080cond-mat.softcond-mat.mtrl-sciphysics.app-phphysics.optics
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对液体气泡演化复杂性的定量成像揭示了薄膜收缩的动力学

Quantitative imaging of the complexity in liquid bubbles' evolution reveals the dynamics of film retraction

Biagio Mandracchia, Zhe Wang, Vincenzo Ferraro, Massimiliano Maria Villone, Ernesto Di Maio, Pier Luca Maffettone, Pietro Ferraro

摘要:

几十年来,液体薄膜的动力学和稳定性一直吸引着科学家。薄膜流是工程、微物理和生物物理等众多领域的核心,并且在很宽的长度、速度和液体性质尺度范围内发生。尽管在这一领域取得了许多重大进展,但我们仍然缺乏适当的定量实验工具,其空间和时间分辨率是全面研究薄膜演变所必需的。我们建议用全息技术解决这个问题,该技术将定量相位成像与设计用于形成和操纵气泡的自定义设置相结合。收集的结果,在一个模型的聚合物水溶液,提供了一个无与伦比的洞察气泡动力学通过全场厚度估计,三维成像和快速采集时间相结合。所提出的方法提供了前所未有的细节水平,将促进更深入地了解薄膜动力学的基本物理。

英文摘要:

The dynamics and stability of thin liquid films have fascinated scientists over many decades. Thin film flows are central to numerous areas of engineering, geophysics, and biophysics and occur over a wide range of length, velocity, and liquid properties scales. In spite of many significant developments in this area, we still lack appropriate quantitative experimental tools with the spatial and temporal resolution necessary for a comprehensive study of film evolution. We propose tackling this problem with a holographic technique that combines quantitative phase imaging with a custom setup designed to form and manipulate bubbles. The results, gathered on a model aqueous polymeric solution, provide an unparalleled insight into bubble dynamics through the combination of full-field thickness estimation, three-dimensional imaging, and fast acquisition time. The unprecedented level of detail offered by the proposed methodology will promote a deeper understanding of the underlying physics of thin film dynamics.

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