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Screen-Printed Piezoelectric Sensors on Tattoo Paper Combined with All-Printed High-Performance Organic Electrochemical Transistors for Electrophysiological Signal Monitoring
RISE Research Institutes of Sweden, Digital Systems, Smart Hardware. Linköping University, Sweden.ORCID iD: 0000-0001-6886-8103
RISE Research Institutes of Sweden, Digital Systems, Smart Hardware.ORCID iD: 0000-0001-6889-0351
RISE Research Institutes of Sweden, Digital Systems, Smart Hardware.ORCID iD: 0000-0002-4575-0193
2023 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252Article in journal (Refereed) Epub ahead of print
Abstract [en]

This work demonstrates sensitive and low-cost piezoelectric sensors on skin-friendly, ultrathin, and conformable substrates combined with organic electrochemical transistors (OECTs) for the detection and amplification of alternating low-voltage input signals. The fully screen-printed (SP) piezoelectric sensors were manufactured on commercially available tattoo paper substrates, while the all-printed OECTs, relying on an extended gate electrode architecture, were manufactured either by solely using SP or by combining SP and aerosol jet printing (AJP) on PET substrates. Applying a low-voltage signal (±25 mV) to the gate electrode of the SP+AJP OECT results in approximately five times higher current modulation as compared to the fully SP reference OECT. The tattoo paper-based substrate enables transfer of the SP piezoelectric sensor to the skin, which in turn allows for radial pulse monitoring when combined with the SP+AJP OECT; this is possible due to the ability of the conformable sensor to convert mechanical vibrations into voltage signals along with the highly sensitive current modulation ability of the transistor device to further amplify the output signal. The results reported herein pave the way toward all-printed fully conformable wearable devices with high sensitivity to be further utilized for the real-time monitoring of electrophysiological signals.

Place, publisher, year, edition, pages
2023.
Keywords [en]
piezoelectric sensor OECT aerosol jet printing screen printing PEDOT:PSS printed electronics
National Category
Computer and Information Sciences
Identifiers
URN: urn:nbn:se:ri:diva-68160DOI: 10.1021/acsami.3c10299Scopus ID: 2-s2.0-85179618444OAI: oai:DiVA.org:ri-68160DiVA, id: diva2:1817118
Available from: 2023-12-05 Created: 2023-12-05 Last updated: 2024-05-23Bibliographically approved

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