Beilstein J. Nanotechnol.2023,14, 819–833, doi:10.3762/bjnano.14.67
sound sensor; heartsoundstethoscope; Introduction
According to data released by the World Health Organization (WHO), approximately 17.9 million people die each year from cardiovascular diseases (CVDs) [1]. CVDs have always been one of the primary diseases affecting human health. In recent years, the
of heartsoundstethoscope.
Results and Discussion
Characterization of thin film samples
In the study by Luo et al. [19], an investigation was carried out to explore the electrospinning of piezoelectric films using different composition ratios of P(VDF-TrFE), ZnO, and GR. The resulting films
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Figure 1:
Preparation process of composite piezoelectric nanofilm.