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Glycine-based Flexible Biocompatible Piezoelectric Pressure Sensor for Healthcare Applications

Hosseini, Ensieh S.; Manjakkal, Libu; Shakthivel, Dhayalan; Dahiya, Ravinder


Ensieh S. Hosseini

Dhayalan Shakthivel

Ravinder Dahiya


This work presents biocompatible flexible piezoelectric composite fabricated by self-assembly of amino acid glycine molecules inside natural chitosan polymer. Piezoelectric composite film consists of glycine spherulite structure embedded in chitosan matrix. The x-ray diffraction confirms the crystallization of stable β-glycine inside the composite and hence its piezoelectric nature. As a result, a simple solvent-casting technique have been used to fabricate the biodegradable composite of β-glycine/chitosan with significant piezoelectric response. We show that the piezoelectric sensor can precisely measure pressure in the range of 0-40 kPa with sensitivity of ∼4.7 mV kPa−1. The devices based on bio-based functional material such as glycine offer huge potential for disposable wearable health applications such as monitoring the pressure in a compression bandage.

Presentation Conference Type Conference Paper (Published)
Conference Name 2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)
Start Date Aug 16, 2020
End Date Aug 19, 2020
Online Publication Date Oct 30, 2020
Publication Date 2020
Deposit Date Jul 28, 2022
Publisher Institute of Electrical and Electronics Engineers
Book Title 2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)
Keywords Flexible Electronics, Biocompatible Materials, Piezoelectric, Glycine, Pressure Sensor
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