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Flexible Piezoelectric Sensor for Real-Time Comprehensive Cardiovascular Monitoring

Research output: Contribution to journalArticlepeer-review

Abstract

Wearable cardiovascular monitoring requires sensitive sensors and body-conforming electronics for reliable and automatic signal processing. Here, we present a fully self-contained platform that integrates a piezoelectric nanofibrous sensor with a custom flexible printed circuit board (PCB) for on-body charge amplification and filtering. Fabricated on a polyimide substrate with an ultralow bias current amplifier, the PCB preserves high-impedance piezoelectric signals for on-body signal processing. Electromechanical tests verified stable, linear performance improved by thermal annealing. System-level evaluation showed robust operation during cardiovascular monitoring, capturing radial, carotid, and seismocardiogram signals and extracting key cardiac parameters, demonstrating its potential as a practical, comprehensive, and wearable biosensing solution.

Original languageEnglish (US)
Pages (from-to)48-55
Number of pages8
JournalACS Applied Electronic Materials
Volume8
Issue number1
DOIs
StatePublished - Jan 13 2026

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Electrochemistry

Keywords

  • biosensors
  • cardiovascular monitoring
  • flexible electronics
  • Piezoelectric
  • signal processing

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