Abstract

The spontaneous migration of droplets on conical fibers is studied experimentally by depositing silicone oil droplets onto conical glass fibers. Their motion is recorded using optical microscopy and analyzed to extract the relevant geometrical parameters of the system. The speed of the droplet can be predicted as a function of geometry and the fluid properties using a simple theoretical model, which balances viscous dissipation against the surface tension driving force. The experimental data are found to be in good agreement with the model.

Graphic abstract

中文翻译：

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锥形纤维上的液滴迁移

摘要

通过将硅油滴沉积到锥形玻璃纤维上，实验研究了液滴在锥形纤维上的自发迁移。使用光学显微镜记录其运动并进行分析，以提取系统的相关几何参数。可以使用简单的理论模型将液滴的速度预测为几何形状和流体特性的函数，该理论模型可以平衡粘性耗散与表面张力驱动力之间的关系。实验数据与模型吻合良好。

图形摘要