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Fluid pressure is commonly measured using devices called manometers, which rely on liquid columns to indicate pressure differences. The height of a liquid column in a manometer reflects the pressure exerted by the fluid, providing a simple yet effective means of measurement. Different types of manometers serve specific purposes based on their configurations and the type of fluids involved.
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Related Experiment Video

Updated: Aug 13, 2025

Mechano-Node-Pore Sensing: A Rapid, Label-Free Platform for Multi-Parameter Single-Cell Viscoelastic Measurements
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Strain Sensor-Inserted Microchannel for Gas Viscosity Measurement.

Kota Shiba1,2, Linbo Liu2,3, Guangming Li2,4

  • 1Center for Functional Sensor & Actuator (CFSN), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Ibaraki, Japan.

Biosensors
|January 21, 2023
PubMed
Summary
This summary is machine-generated.

This study presents a simple method to measure gas viscosity using a strain gauge in a microchannel. The device offers a robust and practical approach for gas property determination and identification.

Keywords:
PDMSgasmicrochannelsensorstrainviscosity

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Area of Science:

  • Physical Chemistry
  • Fluid Dynamics
  • Materials Science

Background:

  • Accurate quantification of gas viscosity is crucial for determining gas properties and identification.
  • Existing methods for gas viscosity measurement often lack simplicity and robustness for practical applications.

Purpose of the Study:

  • To introduce a facile and robust approach for estimating gas viscosity.
  • To develop a simple device for practical applications in gas analysis.

Main Methods:

  • Utilized a strain gauge inserted into a straight microchannel with a height smaller than the gauge.
  • Employed a constrained geometry where the strain gauge deforms the microchannel, generating initial strain transduced into pressure.
  • Measured pressure changes induced by fluid flow to correlate with gas viscosity.

Main Results:

  • Demonstrated a linear correlation between measured pressure change and gas viscosity.
  • Successfully estimated gas viscosities using the developed simple device.

Conclusions:

  • The proposed method provides a simple, robust, and facile approach for gas viscosity estimation.
  • This technique has potential for practical applications in identifying gas properties.