一步制备与分选液滴的实验技术研究  

Experimental Technology Study on the One-step Generation and Sorting of Droplet

作　　者：黄芳胜[1] Huang Fangsheng(Engineering Science Experiment Teaching Center,University of Science and Technology of China,Anhui,230027)

机构地区：[1]中国科学技术大学工程科学实验教学中心,安徽230027

出　　处：《当代化工研究》2020年第18期133-135,共3页Modern Chemical Research

摘　　要：一根倾斜的毛细管在空气与液面的界面上周期性振动时,由于剪切力作用毛细管在脱离液面时会形成液滴,通过控制振动频率和流量实现单分散液滴的高度可控性制备,与此同时,制备后的液滴在下落过程中会产生一个随实验参数变化的侧向位移,最终实现液滴的一步制备与分选。该实验技术控制变量丰富,实验内容兼顾前沿性与趣味性,实验装置简单易搭建,易于操作,实验现象直观化,可拓展为一种实验教学仪器,适合开设为本科生的教学实验。An oblique capillary tube is used to vibrate and shear periodically at the gas-liquid interface to achieve the highly controllable preparation of monodisperse droplets due to the fracture of the liquid bridge.At the same time,the prepared droplets will produce a lateral displacement varying with the experimental parameters during the falling process,and finally realize the one-step generation and sorting of droplets.The experimental technology is rich in control variables,the experimental content is both cutting-edge and interesting,the experimental device is simple and easy to build,easy to operate,and the experimental phenomenon is intuitive.It can be expanded into an experimental teaching instrument,suitable for undergraduate teaching experiments.

关 键 词：界面剪切 液滴制备 侧向位移 实验技术 教学仪器 

分 类 号：G[文化科学]