带有轴向电场的多电解质溶液线的毛细体自我稀释
Patrick Martin1, Gleb Vasilyev1, Eyal Zussman1
1NanoEngineering Group, Faculty of Mechanical Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel.
概括
一个电场重新定向了充电的聚电解质 (PE) 溶液双极,改变了线程稀释的动态. 这导致弹性应力,减缓或阻止稀释,甚至在高电场下引起振荡.
科学领域:
- 物理化学 物理化学
- 聚合物科学 聚合物科学
- 流体动力学 流体动力学
背景情况:
- 多电解质 (PE) 溶液由于充电的大分子而表现出复杂的行为.
- 了解PE解决方案在外部领域的动态对于各种应用至关重要.
研究的目的:
- 为充电的多电解质溶液提出理论,将它们视为电双极.
- 研究轴向电场对PE溶液线程的毛细血管自我稀释动态的影响.
主要方法:
- 充电多电解质溶液作为电双极的理论建模.
- 通过轴向电场对双极重定向的分析.
- 线程半径演变和弹性应力效应的数学描述.
主要成果:
- 双极与电场的对齐会导致显著的轴弹性应力.
- 这些压力减缓,停止或导致振荡式自我稀释动力学.
- 在线程半径演变中观察到从指数或线性衰变的偏差.
- 在高电场上出现振荡模式和哈达马德不稳定性.
结论:
- 提出的理论准确地描述了充电多电解质溶液在电场中的行为.
- 电场诱导的弹性应力从根本上改变了流体线程动态.
- 哈达马德不稳定性可以在强电场下表现为多电解质溶液.
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