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Fully 3D printed piezoelectric pressure sensor for dynamic tactile sensing

Multi-material additive manufacturing using direct ink writing is a versatile and resource-efficient technique which can lead to low-cost sensors and embedded electronic systems. Such an approach can be used for the fabrication of multiple sensor devices promptly with minimal variation. In this work...

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Bibliographic Details
Published in:Additive manufacturing 2023-06, Vol.71, p.103601, Article 103601
Main Authors: Nassar, Habib, Khandelwal, Gaurav, Chirila, Radu, Karagiorgis, Xenofon, Ginesi, Rebecca E., Dahiya, Abhishek Singh, Dahiya, Ravinder
Format: Article
Language:English
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Summary:Multi-material additive manufacturing using direct ink writing is a versatile and resource-efficient technique which can lead to low-cost sensors and embedded electronic systems. Such an approach can be used for the fabrication of multiple sensor devices promptly with minimal variation. In this work, we present a fully printed and packaged piezoelectric sensor using P(VDF-TrFE)-BaTiO3 as the active material. Sensors with different concentrations of BaTiO3 filler were fabricated to demonstrate the application of presented approach to print the devices with optimised performance. The 3 wt. % filler loading generated the highest voltage output of 3 V (at 30kPa) due to higher β-phase content as confirmed by FT-IR. The device exhibited a linear response in the working range of 0–60 kPa and remained stable under continuous operation for 2200 s. The repeatability of the fabrication approach was confirmed by fabrication of 3 devices which showed negligible variation in the output. Finally, to demonstrate the potential use in real application, the sensor was attached to a prosthetic hand and used to identify objects with different hardness based on the dynamic tactile data.
ISSN:2214-8604
2214-7810
DOI:10.1016/j.addma.2023.103601