摘要
设计了多功能液体表面张力测量实验装置,通过使用称重传感器、微压力传感器和高速显微相机等装置,分别测量拉力、压强和液滴影像轮廓,可以实现7种实验方法(基于流体力学原理的吊板法和吊环法、基于微压力原理的最大气泡压力法和液滴压力法、基于影像轮廓分析原理的悬滴法、约束停滴法和旋转滴法)的定量测量液体表面张力.实验装置集成多个表面张力测量功能,能满足演示性、验证性、综合性实验的教学要求.
A multi-function liquid surface tension measurement device was designed.By using weighing sensors,micro pressure sensor and high-speed microscopic camera to measure the force,pressure and droplet profile respectively,seven experimental methods could be used to measure the liquid surface tension quantitatively,including Wilhelmy plate method and DuNouy ring method based on mechanical measuring,maximum bubble pressure method and drop pressure method based on pressure measuring,pendant drop method,constrained sessile drop method and spinning drop method based on drop profile analysis.The experimental device integrated several surface tension measurement devices into a system,which could meet demonstrative,confirmatory and comprehensive teaching requirements.
作者
刘斐
包志豪
方恺
施建辉
LIU Fei;BAO Zhihao;FANG Kai;SHI Jianhui(School of Physics Science and Engineering,Tongji University,Shanghai 200092,China;Shanghai Solon Info Technology Co.Ltd,Shanghai 201108,China)
出处
《物理实验》
2023年第6期22-28,共7页
Physics Experimentation
基金
2022年同济大学教育教学改革重点项目(No.4250104080/051)。
关键词
液体表面张力
吊板法
吊环法
最大气泡压力法
液滴压力法
悬滴法
约束停滴法
旋转滴法
liquid surface tension
Wilhelmy plate method
DuNouy ring method
maximum bubble pressure method
drop pressure method
pendant drop method
constrained sessile drop method
spinning drop method
