Sustainable, Flexible, and Biocompatible Enhanced Piezoelectric Chitosan Thin Film for Compliant Piezosensors for Human Health

Autor: Gaia deMarzo, Vincenzo M. Mastronardi, Luciana Algieri, Federica Vergari, Filippo Pisano, Luca Fachechi, Sergio Marras, Lara Natta, Barbara Spagnolo, Virgilio Brunetti, Francesco Rizzi, Ferruccio Pisanello, Massimo De Vittorio
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Advanced Electronic Materials, Vol 9, Iss 9, Pp n/a-n/a (2023)
Druh dokumentu: article
ISSN: 2199-160X
20220006
DOI: 10.1002/aelm.202200069
Popis: Abstract The necessity to continuously and seamlessly monitor human health is calling for compliant, comfortable, and safe wearables. The employment of piezoelectric biopolymers in form of thin film perfectly matches with these needs due to their inherent flexibility, sensitivity, and biocompatibility. Among them, chitosan is a low cost, highly sustainable, and biocompatible material with a great potential for applications in compliant wearables. However, chitosan and biopolymers in general show relatively low piezoelectric coefficients and processing difficulties. Here, it is shown a facile approach to increase more than twice the piezoelectric coefficient of thin chitosan film and to process this promising biomaterial for the fabrication of the first set of thin chitosan film‐based ultrasound transducers. This work leverages the exploitation of environmental‐friendly biopolymers in the development of compliant wearable transducers and thus represents a step forward in the development of completely biodegradable, transparent, thin, and flexible piezoelectric macro‐ and microtransducers.
Databáze: Directory of Open Access Journals
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