A piezoelectric transducer made of biodegradable materials – design and properties

• Autorzy: Mirkowska Agnieszka , Rytlewski Piotr , Puszczykowska Natalia , Sołogub Michał

Identyfikatory

DOI

10.24425/aee.2025.155957

• Języki publikacji: EN

Abstrakty

EN

In the paper, the construction and properties of a layered piezoelectric transducer made of biodegradable materials are presented. The transducer consists of an electret layer, an elastic coating, and an outer structural layer. As the electret layer, the polylactide (PLA) foil with a thickness of 20 μm was used. The electrical properties of the foil, such as resistivity, relative permittivity, and charge decay, were examined. The elastic coating was made of natural rubber (NR), ensuring flexibility, while the outer structural layer was fabricated from PLA using a 3-D printing method. Two different shapes of the PLA-grid were examined: hexagonal and striped, to evaluate their influence on the electromechanical performance of the device. In the paper, the model and electro-mechanical properties of the transducer are presented. The electret foil was polarized using a high-voltage corona charging method. The maximal value of the piezoelectric coefficient, possible to obtain, was calculated using the described model, and it is equal to 𝑑 _33MAX = 1.4 nC/N for a hexagonal structure and 0.87 nC/N for a striped one. That corresponds to the maximal value of effective charge density q_sMAX = 7.9 mC/m² limited by Paschen’s law. The measured static value of the piezoelectric coefficient 𝑑₃₃ was up to 280 pC/N. The presented results demonstrate the potential of biodegradable piezoelectric transducers for sustainable and environmentally friendly applications in energy harvesting and sensor technologies.

Słowa kluczowe

EN

biodegradability; biodegradable transducer; electret; piezoelectric transducer; polylactide

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2025
• Tom: Vol. 74, nr 4
• Strony: 809--825
• Opis fizyczny: Bibliogr. 36 poz., fot., rys., tab., wykr., wz.

Twórcy

autor

Mirkowska Agnieszka

• Department of Electrical Engineering Fundamentals, Wroclaw University of Science and Technology, pl. Grunwaldzki 13, 50-377 Wroclaw, Poland

• https://orcid.org/0000-0001-6713-1927

autor

Rytlewski Piotr

• Faculty of Materials Engineering, Kazimierz Wielki University, ul. Chodkiewicza 30, 85-064 Bydgoszcz, Poland

• https://orcid.org/0000-0001-7635-8365

autor

Puszczykowska Natalia

• Faculty of Materials Engineering, Kazimierz Wielki University, ul. Chodkiewicza 30, 85-064 Bydgoszcz, Poland

• https://orcid.org/0000-0001-7635-8365

autor

Sołogub Michał

• Department of Electrical Engineering Fundamentals, Wroclaw University of Science and Technology, pl. Grunwaldzki 13, 50-377 Wroclaw, Poland

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