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Volume 7
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10.3390/instruments7030020
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Article

Inkjet-Printed Interdigitated Capacitors for Sensing Applications: Temperature-Dependent Electrical Characterization at Cryogenic Temperatures down to 20 K

by
Giovanni Gugliandolo
1,*,
Andrea Alimenti
2,
Mariangela Latino
1,
Giovanni Crupi
3,
Kostiantyn Torokhtii
2,
Enrico Silva
2 and
Nicola Donato
1
1
Department of Engineering, University of Messina, 98166 Messina, Italy
2
Department of Industrial, Electronic and Mechanical Engineering, Roma Tre University, 00146 Roma, Italy
3
BIOMORF Department, University of Messina, 98125 Messina, Italy
*
Author to whom correspondence should be addressed.
Instruments 2023, 7(3), 20; https://doi.org/10.3390/instruments7030020
Submission received: 17 May 2023 / Revised: 16 July 2023 / Accepted: 17 July 2023 / Published: 19 July 2023
(This article belongs to the Special Issue Microwave Measurements, Methods and Instruments for Science, Society and Industry)
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Abstract

Microwave transducers are widely used for sensing applications in areas such as gas sensing and microfluidics. Inkjet printing technology has been proposed as a promising method for fabricating such devices due to its capability to produce complex patterns and geometries with high precision. In this work, the temperature-dependent electrical properties of an inkjet-printed single-port interdigitated capacitor (IDC) were investigated at cryogenic temperatures down to 20 K. The IDC was designed and fabricated using inkjet printing technology, while its reflection coefficient was measured using a vector network analyzer in a cryogenic measurement setup and then transformed into the corresponding admittance. The resonant frequency and quality factor (Q-factor) of the IDC were extracted as functions of the temperature and their sensitivity was evaluated. The results showed that the resonant frequency shifted to higher frequencies as the temperature was reduced, while the Q-factor increased as the temperature decreased. The trends and observations in the temperature-dependent electrical properties of the IDC are discussed and analyzed in this paper, and are expected to be useful in future advancement of the design and optimization of inkjet-printed microwave transducers for sensing applications and cryogenic electronics.
Keywords: inkjet printing; interdigitated capacitor; microwave measurements; material characterization; cryogenic temperatures inkjet printing; interdigitated capacitor; microwave measurements; material characterization; cryogenic temperatures

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MDPI and ACS Style

Gugliandolo, G.; Alimenti, A.; Latino, M.; Crupi, G.; Torokhtii, K.; Silva, E.; Donato, N. Inkjet-Printed Interdigitated Capacitors for Sensing Applications: Temperature-Dependent Electrical Characterization at Cryogenic Temperatures down to 20 K. Instruments 2023, 7, 20. https://doi.org/10.3390/instruments7030020

AMA Style

Gugliandolo G, Alimenti A, Latino M, Crupi G, Torokhtii K, Silva E, Donato N. Inkjet-Printed Interdigitated Capacitors for Sensing Applications: Temperature-Dependent Electrical Characterization at Cryogenic Temperatures down to 20 K. Instruments. 2023; 7(3):20. https://doi.org/10.3390/instruments7030020

Chicago/Turabian Style

Gugliandolo, Giovanni, Andrea Alimenti, Mariangela Latino, Giovanni Crupi, Kostiantyn Torokhtii, Enrico Silva, and Nicola Donato. 2023. "Inkjet-Printed Interdigitated Capacitors for Sensing Applications: Temperature-Dependent Electrical Characterization at Cryogenic Temperatures down to 20 K" Instruments 7, no. 3: 20. https://doi.org/10.3390/instruments7030020

APA Style

Gugliandolo, G., Alimenti, A., Latino, M., Crupi, G., Torokhtii, K., Silva, E., & Donato, N. (2023). Inkjet-Printed Interdigitated Capacitors for Sensing Applications: Temperature-Dependent Electrical Characterization at Cryogenic Temperatures down to 20 K. Instruments, 7(3), 20. https://doi.org/10.3390/instruments7030020

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