Investigating Carboxymethyl Cellulose in Aerosol Jet Printed Microwave Humidity Sensors
Loading...
Access rights
openAccess
acceptedVersion
URL
Journal Title
Journal ISSN
Volume Title
A4 Artikkeli konferenssijulkaisussa
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.
Date
Major/Subject
Mcode
Degree programme
Language
en
Pages
4
Series
2025 16th German Microwave Conference, GeMiC 2025, pp. 577-580
Abstract
This study presents a passive and chipless humidity sensor to monitor relative humidity (RH) continuously. The sensor is constructed on kapton substrates, a C-shaped resonator integrated with meander line structure that operates at 5.925 GHz and is printed with silver nanoparictles (Ag NPs) conducting ink. Eco-friendly, carboxymethyl cellulose (CMC) fabricated in between conducting AgNP lines to monitor RH in slowly changing environment. Both layers are deposited using ultrasonic aerosol jet printer technology. The CMC layer served as an active sensing element, enhancing the microwave resonator's sensitivity and overall performance in detecting humidity. The sensor demonstrates high sensitivity, reaching up to 0.77MHz/%RH across a humidity range of 47.5% to 90%.Description
Publisher Copyright: © 2025 Institut fur Mikrowellen und Antennentechnik - IMA.
Keywords
Other note
Citation
Basnayaka, M, Jantti, R, Ruttik, K, Kerminen, J, Gallegos-Rosas, K & Soldano, C 2025, Investigating Carboxymethyl Cellulose in Aerosol Jet Printed Microwave Humidity Sensors. in 2025 16th German Microwave Conference, GeMiC 2025. 2025 16th German Microwave Conference, GeMiC 2025, Institut für Microwellen- und Antennentechnik e.V., pp. 577-580, German Microwave Conference, Dresden, Germany, 17/03/2025. https://doi.org/10.23919/GeMiC64734.2025.10979161