Organic pressure sensing surfaces fabricated by lamination of flexible substrates

Marco Fattori, Sahel Abdinia, Eugenio Cantatore, Gernot Pauer, Barbara Stadlober, Herbert Gold, Josephine Socratous, Fabrizio Torricelli

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)
158 Downloads (Pure)

Abstract

This paper presents the design and experimental characterization of large-area active matrixes on foil for pressure-sensing applications. Front-end circuits based on organic thin-film transistors on a flexible substrate are laminated with a foil hosting screen-printed PDVF-TrFE piezo sensors to create the complete flexible sensing systems with 6 × 10 sensing elements on a 16.5 cm × 27.5 cm area. After defining the specifications based on the application scenarios, and designing two different front-end matrixes (A and B), the performance of the sensing surface B has been investigated in simulation. Numerical results show a readout speed of 5 kframe/s and 78.6 dB maximum signal-to-noise ratio with impact forces up to 50 kN. Experiments made with a prototype based on front end A confirm that the system can correctly reconstruct the impact profile of forces up to 50 kN obtained in a drop tower setup. Measurements of the front end circuit B show an input equivalent noise of 451 μV rms and a 5% settling time of 13.8 μs, both adequate for the specified applications.

Original languageEnglish
Article number8307231
Pages (from-to)1159-1166
Number of pages8
JournalIEEE Transactions on Components, Packaging and Manufacturing Technology
Volume8
Issue number7
DOIs
Publication statusPublished - Jul 2018

Keywords

  • Flexible electronics
  • Force
  • large-area electronics
  • Mechanical sensors
  • Organic thin film transistors
  • organic thin-film transistor (OTFTs)
  • piezoelectric sensors
  • pressure sensing.
  • Sensor phenomena and characterization
  • Transmission line matrix methods
  • pressure sensing

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