传感技术学报2019，Vol.32Issue(1)：19-24,6.DOI:10.3969/j.issn.1004-1699.2019.01.004
基于平行四边形柔性铰链的新型微量液体粘度测量方法
A Novel Method of Viscosity Measurement for a Small-Volume Liquid Based on the Parallelogram Flexible Hinge
摘要
Abstract
In the field of analytical chemistry, bio-engineering, flow metering and etc, the viscosity of small-volume samples is of great significance for engineering analysis and calculation. The methods of viscosity measurement for small-volume samples are gradually developed in these years. The methods are used to measure viscosity values for small-volume liquids lower than 150 m Pa·s. In this paper, a novel viscosity measurement method requiring sample volumes less than 15 μL based on the parallelogram flexible hinge is designed to increase the measurement range. A rigid rod combined with a parallelogram flexible hinge is used to measure the viscosity in this method. One-dimensional damping vibration under the action of transient force is performed. Due to the viscous force of the liquid, the damping factor of the system changes. The greater the viscosity of the liquid, the larger the damping factor becomes.The relationship between them can be established by the calibration experiments. The results showed that the range of the viscosity measurement is 10 m Pa·s ～ 750 m Pa·s and the average of the relative error is 5.8％. The method of the shear motion of the cantilever could be developed into a novel viscosity measurement apparatus for a small-volume liquid.关键词
粘度/微量液体/剪切运动/阻尼/平行四边形柔性铰链Key words
viscosity/small-volume liquid/shear motion/damping/parallelogram flexible hinge分类
信息技术与安全科学引用本文复制引用
薛卓阳,赵美蓉,陈曦,李言,乔沁雪,郑叶龙..基于平行四边形柔性铰链的新型微量液体粘度测量方法[J].传感技术学报,2019,32(1):19-24,6.基金项目
摩擦学国家重点实验室摩擦学科学基金(SKLTKF17B18) （SKLTKF17B18）
