软固体的不稳定湿
Quoc Vo1, Surjyasish Mitra2, Marcus Lin3
1School of Mechanical & Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639708, Singapore; Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA(2).
Journal of colloid and interface science
|March 14, 2024
概括
在软固体上传播的不稳定的液体表现出粘滑行为. 这种现象是由液体惯性,毛细血管力和固体日益增强的固定力驱动的.
科学领域:
- 软物质物理学 软物质物理学
- 流体动力学 流体动力学
- 表面科学是一门科学.
背景情况:
- 液体在软固体上传播往往表现出间歇性粘滑动力学.
- 之前的研究主要集中在准静态或强制扩散上,在那里形成一个持久的,最大限度地减少速度的依赖.
- 不稳定的湿,一个常见的场景,仍然不太被探索,假设依赖于粘贴的持续时间,速度和脊生长.
研究的目的:
- 为了研究控制软固体不稳定湿的棒滑过渡的机制.
- 探索日益增长的湿地山脊在影响下降值方面的作用.
- 基于液体和固体特性,开发一种基于粘到滑过渡的预测模型.
主要方法:
- 在不同硬度的软固体上使用自由传播的水滴进行了不稳定的湿实验.
- 采用同步高速成像和干扰测量来捕捉棒滑动行为和湿的演变.
- 分析了实验数据,以将棒滑特性与湿动态联系起来.
主要成果:
- 确定了液体惯性,毛细管力变化和固体粘性弹性诱导的固定力之间的竞争作为间歇性湿化的驱动因素.
- 开发了一个理论框架,以定量预测棒到滑过渡.
- 确定了接触角度变化,粘合时间,扩散速度和固体粘弹性特性之间的关系.
结论:
- 软固体上的不稳定湿是由惯性,毛细血管和粘弹性力之间的动态相互作用所支配的.
- 越来越多的湿显著影响下降值,控制棒滑过渡.
- 这些发现为组织工程和柔性电子等应用中不稳定湿提供了机械洞察力和控制策略.
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