A Surface Texture Design to Obstruct the Liquid Migration Induced by Omnidirectional Thermal Gradients

Langmuir : the ACS Journal of Surfaces and Colloids
Qingwen DaiXiaolei Wang

Abstract

Thermo-capillary migration is a phenomenon in which surface thermal gradients drive a liquid to flow from warm to cold regions without external forces. It is important to prevent the migration of liquid lubricants on rubbing surfaces. In this paper, a pattern of microdimples was proposed to obstruct the liquid migration induced by an omnidirectional thermal gradient. Microdimple patterns were fabricated on the surfaces of SUS316 stainless steel. Experiments were performed to investigate the influence of microdimple patterns with different geometric parameters on the migration behavior of paraffin oil. In particular, this study focused on the interfacial flowing near the microdimples. The results demonstrated that microdimples have a significant obstructive effect on migration, whereas dimples have a retaining effect, and the adjacent dimples have an interacting effect.

References

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Citations

Jul 12, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Qingwen DaiXiaolei Wang
Aug 19, 2017·Nanoscale·Chirodeep BakliSuman Chakraborty
Nov 16, 2018·Journal of the Royal Society, Interface·Meng LiXiaolei Wang
Mar 13, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Qingwen DaiM M Khonsari
Jul 4, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Qingwen DaiXiaolei Wang

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