Efficient approach for dielectric permittivity measurements of liquids adopting a 3D‐printed cavity resonator

This paper presents an operator‐friendly and cost‐efficient approach to characterize the dielectric permittivity of liquids flowing in narrow tubes, such as drainage tubes used as part of the wound healing process in hospitals. The approach is based on an oscillator such that the characterization ca...

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Bibliographic Details
Published in:Microwave and optical technology letters 2021-11, Vol.63 (11), p.2797-2802
Main Authors: Rocco, Giulia Maria, Barmuta, Paweł, Bao, Xiue, Schreurs, Dominique, Bozzi, Maurizio
Format: Article
Language:English
Subjects:
3D‐printing
Cavity resonators
fluidic sensor
Liquids
oscillator
Permittivity
permittivity measurements
resonant cavity
Three dimensional printing
Tubes
Wound healing
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Summary:This paper presents an operator‐friendly and cost‐efficient approach to characterize the dielectric permittivity of liquids flowing in narrow tubes, such as drainage tubes used as part of the wound healing process in hospitals. The approach is based on an oscillator such that the characterization can be achieved with minimal operator (e.g., nurse) training. The oscillator's frequency is set by a 3D‐printed cavity resonator as to offer flexibility for the tube line to pass through. The oscillator design had to be tailored to ensure the oscillation condition to be met over a wide range of varying liquid compositions passing through the 3D‐printed cavity resonator. The design and results of a proof‐of‐concept implementation are presented and discussed.
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.32979