使用带有集成纸的开放通道毛细血管树进行增强的毛细血管送
Jodie C Tokihiro1, Wan-Chen Tu1, Jean Berthier1
1Department of Chemistry, University of Washington, Seattle, Washington 98195, USA.
Physics of fluids (Woodbury, N.Y. : 1994)
|September 7, 2023
概括
将毛细管树与纸相连,可显著提高毛细管在开放微流体中的送性能. 这种新的方法实现了粘性液体的高流速,超过了传统的毛细血管系统.
科学领域:
- 微流体学 微流体学
- 流体动力学 流体动力学
- 材料科学 材料科学 材料科学
背景情况:
- 对微流体设备而言,有效的毛细血管送至关重要.
- 现有的方法侧重于毛细血管通道或分别吸收材料.
- 开放式微流体学为流体运输带来了独特的挑战和机遇.
研究的目的:
- 为了研究将毛细血管树与纸相连接的协同效应,以增强毛细血管送.
- 为了评估这种混合系统与不同粘度的流体的性能.
主要方法:
- 毛细血管树的制造,旨在模仿自然的分支结构.
- 在毛细血管通道的末端集成纸.
- 使用不同基于酒精的液体 (异醇,醇,非醇) 实验测量流速和速率.
主要成果:
- 合系统实现了高持续的流量,例如,7mm/s与50%的异醇超过30s.
- 即使使用高粘度液体 (nonanol) 长时间 (>150秒),也保持了显著的流量.
- 与单独的毛细血管树相比,混合方法显示流速大幅增加.
结论:
- 将毛细血管树与纸相结合提供了一种强大的策略,用于增强开放微流体中的毛细血管送.
- 这种方法有效地克服了与流体粘度相关的限制,并使更高的持续流速成为可能.
- 这些发现对设计需要高效的被动流体传输的先进微流体设备有影响.
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