We designed, fabricated, and validated a piezoresistive bending sensor, a fundamental component of wearable electronic devices for monitoring human motion. The most diffused opaque carbon-based resistance flex sensors suffer from low detection for small bending angles. The sensor we here present is based on a semi-transparent active material (fulleropyrrolidine bisadducts polymer) and has the remarkable advantage of good electrical properties for low bending angles. The fabrication steps are effective since a pre-patterned ITO/PET surface is functionalized by chronoamperometric deposition, and the silver electrical contacts are inkjet printed. We propose a fitting function of the measured thin film resistance curve vs. the bending angle, showing promising properties as a complimentary bending sensor to the most diffused flex sensors. The results pave the way to new applications and more performant wearables.

Vito Errico, Clara Chiappara, Giuseppe Arrabito, Vincenzo Campisciano, Michelangelo Scopelliti, Michelangelo Gruttadauria, et al. (2022). Low angle bending detection semi-transparent piezoresistive sensor. In G. Di Francia, C. Di Natale (a cura di), Sensors and Microsystems Proceedings of AISEM 2021 – In Memory of Arnaldo D’Amico.

Low angle bending detection semi-transparent piezoresistive sensor

Clara Chiappara;Giuseppe Arrabito;Vincenzo Campisciano;Michelangelo Scopelliti;Michelangelo Gruttadauria;Francesco Giacalone;Bruno Pignataro;
2022-06-29

Abstract

We designed, fabricated, and validated a piezoresistive bending sensor, a fundamental component of wearable electronic devices for monitoring human motion. The most diffused opaque carbon-based resistance flex sensors suffer from low detection for small bending angles. The sensor we here present is based on a semi-transparent active material (fulleropyrrolidine bisadducts polymer) and has the remarkable advantage of good electrical properties for low bending angles. The fabrication steps are effective since a pre-patterned ITO/PET surface is functionalized by chronoamperometric deposition, and the silver electrical contacts are inkjet printed. We propose a fitting function of the measured thin film resistance curve vs. the bending angle, showing promising properties as a complimentary bending sensor to the most diffused flex sensors. The results pave the way to new applications and more performant wearables.
29-giu-2022
Settore CHIM/01 - Chimica Analitica
Settore CHIM/02 - Chimica Fisica
Settore CHIM/06 - Chimica Organica
Settore CHIM/03 - Chimica Generale E Inorganica
Vito Errico, Clara Chiappara, Giuseppe Arrabito, Vincenzo Campisciano, Michelangelo Scopelliti, Michelangelo Gruttadauria, et al. (2022). Low angle bending detection semi-transparent piezoresistive sensor. In G. Di Francia, C. Di Natale (a cura di), Sensors and Microsystems Proceedings of AISEM 2021 – In Memory of Arnaldo D’Amico.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/562811
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