在微流体容器中蒸发诱导的声学排放
S Dutta1, T J Bieling1, G J Verbiest1
1Department of Precision and Microsystems Engineering, Faculty of 3ME, TU Delft, Mekelweg 2, Delft 2628CD, The Netherlands.
Royal Society open science
|December 14, 2023
概括
来自微流体容器的水蒸发过程中的声学排放 (AEs) 显示了与气泡形成和孔隙入侵相关的独特脉冲类型. 共振频率与容器大小相关,为流体动力学和潜在的健康监测应用提供了洞察力.
科学领域:
- 在多孔介质中的流体动力学.
- 分析声学排放的分析.
- 微流体学 微流体学
背景情况:
- 在多孔介质中的流体流动在地质学和生物学中至关重要.
- 声学排放 (AEs) 伴随流体移位前线,但它们的起源仍有争议.
- 微流体系统模仿生物流体运输,就像植物一样.
研究的目的:
- 调查微流体容器在水蒸发过程中的声学排放 (AEs).
- 描述AE脉冲类型及其起源.
- 分析AE共振频率与微流体容器尺寸之间的关系.
主要方法:
- 在水蒸发过程中记录和分析声学排放 (AEs).
- 利用模仿植物血管系统的人工微流体血管.
- 提取的沉降时间来分类AE脉冲类型.
- 测量了共振频率,并将它们与血管半径和长度相关联.
主要成果:
- 确定了三种不同的AE脉冲类型,归因于泡形成,断裂和孔隙入侵.
- 在特定的AE类型中观察到10到70kHz之间的共振频率.
- 发现共振频率随着血管半径和长度的增加而下降.
结论:
- 在微流体系统中,蒸发诱导的AE提供了关于流体移位过程的见解.
- AE脉冲特征与特定的物理事件有关,例如泡形成和孔隙入侵.
- 研究结果表明,在非侵入性检查和血管健康监测方面有潜在的应用.
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