Abstract
Quantifying the viscosity of a gas is of great importance in determining its properties and can even be used to identify what the gas is. While many techniques exist for measuring the viscosities of gases, it is still challenging to probe gases with a simple, robust setup that will be useful for practical applications. We introduce a facile approach to estimating gas viscosity using a strain gauge inserted in a straight microchannel with a height smaller than that of the gauge. Using a constrained geometry for the strain gauge, in which part of the gauge deforms the channel to generate initial gauge strain that can be transduced into pressure, the pressure change induced via fluid flow was measured. The change was found to linearly correlate with fluid viscosity, allowing estimation of the viscosities of gases with a simple device.
Funder
JSPS
Ministry of Education, Culture, Sports, Science, and Technology
The Telecommunications Advancement Foundation
Marubun Research Promotion Foundation
China Scholarship Council
Subject
Clinical Biochemistry,General Medicine,Analytical Chemistry,Biotechnology,Instrumentation,Biomedical Engineering,Engineering (miscellaneous)
Reference40 articles.
1. (2014). Handbook of Chemistry and Physics, CRC Press.
2. The pitch drop experiment;Edgeworth;Eur. J. Phys.,1984
3. A droplet-based microfluidic viscometer for the measurement of blood coagulation;Mena;Biomicrofluidics,2020
4. Kim, G., Jeong, S., and Kang, Y.J. (2020). Ultrasound Standing Wave-Based Cell-to-liquid Separation for Measuring Viscosity and Aggregation of Blood Sample. Sensors, 20.
5. Open sessile droplet viscometer with low sample consumption;Hermann;Lab Chip,2020