应用数学和力学2017，Vol.38Issue(5)：495-502,8.DOI:10.21656/1000-0887.370358
PDMS表面上的液滴蒸发实验研究
Experimental Investigation of Evaporating Sessile Droplets on PDMS Surface
摘要
Abstract
Evaporation of sessile water droplets on polydimethylsiloxane (PDMS) surface was experimentally studied with the particle tracking velocimetry (PTV) technique.The fluorescent microspheres at the solid-liquid interface first moved towards the center and then back to the contact line.Because the evaporative flux near the contact line is less than that far from the line,there will be a capillary flow towards the center when the contact line is pinned.Such a flow will carry microspheres towards the center.Moving characteristics of the contact line were also investigated.It is found that the theoretical values of the moving velocity at different moments in the CCA stage is of the same order with the experimental values.However,the experimental moving accelerations were much larger than the theoretical ones because the microspheres at the contact line weaken the interaction between the PDMS surface and the contact line.关键词
液滴/蒸发/PDMS/接触线/PTV技术Key words
droplet/evaporation/PDMS/contact line/PTV technique分类
数理科学引用本文复制引用
夏雪莲,郑旭,黄先富,周金枝,余迎松..PDMS表面上的液滴蒸发实验研究[J].应用数学和力学,2017,38(5):495-502,8.基金项目
国家自然科学基金(面上项目)(11572114)The National Natural Science Foundation of China (General Program)(11572114) （面上项目）
