Tunable Sensing Properties of 3D-printed Hydrogel-based RLC Resonators for Temperature and Pressure Detection
Abstract
This study presents an innovative approach to enhance sensing behavior of hydrogel-based RLC resonators for temperature and pressure detection by leveraging 3D macro porous structures. Utilizing the direct ink writing (DIW) method, sensors were assembled using poly(N-isopropylacrylamide) (PNIPAM)-based and poly(ethylene glycol) dimethacrylate (PEGDMA)-based hydrogels with varied infill densities to create porous and solid structures. The results showed that both PNIPAM-based temperature sensors and PEGDMA-based pressure sensors with porous structures exhibit higher sensitivity to environmental changes than their solid counterparts. Morphological analysis provided further insights of how temperature-induced structural changes in PNIPAM-based hydrogels affect their temperature sensing performance. These findings suggest that the sensing performance of hydrogel-based sensors can be tuned by adjusting hydrogel porosity with a versatile DIW 3D-printing technique.
Recommended Citation
B. M. Lee et al., "Tunable Sensing Properties of 3D-printed Hydrogel-based RLC Resonators for Temperature and Pressure Detection," Sensors and Actuators A: Physical, vol. 387, article no. 116303, Elsevier, Jun 2025.
The definitive version is available at https://doi.org/10.1016/j.sna.2025.116303
Department(s)
Mechanical and Aerospace Engineering
Keywords and Phrases
3D printing; Hydrogel; Multifunctional sensor; Pressure sensing; Temperature sensing
International Standard Serial Number (ISSN)
0924-4247
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2025 Elsevier, All rights reserved.
Publication Date
01 Jun 2025
