摘要
为解决流体表面张力在生物医学、微流控制及化学化工等领域测量精度不足的问题,基于激光三角法的测量原理,利用线激光测量仪获取水平静置液滴的轮廓,结合基于Young-Laplace方程的水平静置液滴数学模型,对水平静置液滴的二维轮廓进行了测量研究,实现了流体表面张力的精确测量。实验测量得到的铜、铝和钢三种不同基板的蒸馏水液滴表面张力分别为72.04、71.93和71.97 mN·m^(-1),相对误差分别为-0.14%、-0.29%和-0.24%,与相机拍摄法和激光散射法相比,测量的蒸馏水液滴表面张力值精度分别提升了55.26%和81.91%。结果表明,激光三角法可以用于液滴表面张力光学无损测量,为研究流体表面张力提供了一种新思路。
The study aims toimprove the measurement accuracy of fluid surface tension in biomedical,microfluidic control,and chemical engineering fields.In this study,the laser triangulation method and the line laser measuring instrument are employedto capture the contour of horizontally placeddropletsand to measure their two-dimensional contour with a mathematical model which is based on the Young-Laplace equation,achieving precise measurement of fluid surface tension.Experimental measurements of distilled water droplets on copper,aluminum,and steel substrates yield surface tension values of 72.04 mN·m^(-1),71.93·m^(-1),and 71.97·m^(-1),with relative errors of-0.14%,-0.29%,and-0.24%,respectively.Compared to the camera imaging and laser scattering methods,the accuracy of surface tension measurements in this study has been improved by 55.26%and 81.91%.These results indicate that laser triangulation can be applied to non-destructive optical measurement of droplet surface tension.The study provides a novel approach forthe research on fluid surface tension.
作者
张博渊
吴玲玲
王谦
陈靖
余应时
ZHANG Boyuan;WU Lingling;WANG Qian;CHEN Jing;YU Yingshi(School of Opto-electronical Engineering,Xi’an Technological University,Xi’an 710021,China)
出处
《西安工业大学学报》
2025年第4期620-630,共11页
Journal of Xi’an Technological University
基金
陕西省重点研发计划项目(2024SF-YBXM-449)。
作者简介
通信作者:吴玲玲(1977-),女,副教授,主要研究方向为光电检测与光电仪器,E-mail:26818191@qq.com。
