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Efficient approach for dielectric permittivity measurements of liquids adopting a 3D‐printed cavity resonator
Author(s) -
Rocco Giulia Maria,
Barmuta Paweł,
Bao Xiue,
Schreurs Dominique,
Bozzi Maurizio
Publication year - 2021
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32979
Subject(s) - resonator , permittivity , dielectric , dielectric resonator , materials science , optoelectronics , flexibility (engineering) , tube (container) , 3d printed , oscillation (cell signaling) , dielectric resonator antenna , electronic engineering , acoustics , engineering , physics , composite material , biomedical engineering , mathematics , statistics , biology , genetics
Abstract 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.