165278 20260219141449.0 doi 10.1109/JSEN.2025.3614471 sideral 146738 ART-2025-146738 eng Martínez-Cesteros, Javier Universidad de Zaragoza (orcid)0000-0001-8458-5656 Characterization and Comparison of Piezoresistive Materials and Their Performance on Pressure-Sensitive Mats 2025 Access copy available to the general public Unrestricted The response of three readily available low-cost piezoresistive materials (EeonTex, Ex-Static, and Velostat) and their performance on a specific application were studied in this work. First, a series of pressure cycles was applied with a pneumatic platform on piezoresistive sensors based on them. These experiments allowed quantifying several nonidealities: Variability, drift, creep, hysteresis, nonlinearity, and response time. An overview radar chart showed that hysteresis, variability, and response time were quantitatively more relevant and different between the materials. Then, pressure-sensitive mats (PSMs) were manufactured using each of those three materials. They were evaluated by measuring the center of pressure (CoP) in stability tests. A force platform (FP) served as a reference instrument. The best performance in this kind of experiment was obtained by the Velostat-based mat (trajectory distance of 0.021 versus 0.035 and 0.045 cm/sample for Ex-Static-based and EeonTexbased mats, respectively). This material also showed less response time (0.21 versus 0.42 and 0.50 s for Ex-Static and EeonTex, respectively) and hysteresis (0.11 versus 0.21 and 0.23 S/S for EeonTex and Ex-Static, respectively), although its variability was larger (0.137 versus 0.065 and 0.059 S/S for Ex-Static and EeonTex, respectively). These results indicate that response time and hysteresis have a major influence on the determination of the CoP. Further research should focus on compensating for these effects or finding sensor configurations that minimize them. info:eu-repo/grantAgreement/ES/DGA/T49-23R info:eu-repo/grantAgreement/ES/MCIN/PID2021-125091OB-I00 info:eu-repo/grantAgreement/ES/MCINN/PID2024-158986OB-C21 info:eu-repo/grantAgreement/ES/MCINN/PID2024-158986OB-C22 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Domínguez-Gimeno, Sergio Universidad de Zaragoza (orcid)0000-0002-1229-8591 Castellanos-Ramos, Julián Sánchez-Durán, José A. Medrano-Sánchez, Carlos Universidad de Zaragoza (orcid)0000-0001-7671-7540 5007 520 Universidad de Zaragoza Dpto. Informát.Ingenie.Sistms. Área Ingen.Sistemas y Automát. 5008 785 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Tecnología Electrónica 5009 535 Universidad de Zaragoza Dpto. Ingeniería Eléctrica Área Ingeniería Eléctrica 25, 22 (2025), 41373-41383 IEEE sens. j. IEEE SENSORS JOURNAL 1530-437X 2505211 http://zaguan.unizar.es/record/165278/files/texto_completo.pdf Versión publicada 3956007 http://zaguan.unizar.es/record/165278/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:165278 articulos driver 2026-02-19-14:14:15 ARTICLE