6533b873fe1ef96bd12d57d6
RESEARCH PRODUCT
Low angle bending detection semi-transparent piezoresistive sensor
Vito ErricoClara ChiapparaGiuseppe ArrabitoVincenzo CampiscianoMichelangelo ScopellitiMichelangelo GruttadauriaFrancesco GiacaloneBruno PignataroGiovanni Saggiosubject
Piezoresistive sensor Wearable technology Semi-transparent Flexible Inkjet printed circuits Organic polymer films ChronoamperometrySettore CHIM/01 - Chimica AnaliticaSettore CHIM/02 - Chimica Fisicadescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-06-29 |