Аутори:
1. Fatima Živić, Факултет инжењерских наука Универзитета у Крагујевцу, Serbia
2. Strahinja Milenković, Institute for Information Technologies, University of Kragujevac, 34000 Kragujevac, Serbia, Serbia
3. Никола Которчевић, Факултет инжењерских наука, Универзитет у Крагујевцу, Сестре Јањић 6, 34000 Крагујевац, Србија, Serbia
4. Nenad Grujović, Факултет инжењерских наука Универзитета у Крагујевцу, Serbia

Апстракт:
Green energy sources are essential for a sustainable future. Piezoelectric energy harvesting presents a promising approach to powering low-power electronics using ambient mechanical energy. Based on the reversible piezoelectric effect, mechanical stress induces electrical polarization, while applied electric fields cause mechanical deformation. This effect originates from non-centrosymmetric crystal structures that generate surface charges under strain. Energy conversion is governed by electromechanical constitutive equations, and materials used include natural crystals (e.g., quartz), ceramics (e.g., PZT, BaTiO₃), polymers (e.g., PVDF), and polymer-ceramic composites. Material selection critically affects electrical output, mechanical durability, and frequency response. This review focuses on key performance metrics for evaluating the effectiveness of a piezoelectric energy harvester, each reflecting a different aspect of its behavior and suitability for a given application. Key performance metrics include power output, conversion efficiency, resonant frequency, electromechanical coupling, mechanical quality factor, and fatigue resistance. A clear understanding of the underlying effects and these parameters is essential for optimizing efficient and reliable piezoelectric energy harvesters for sustainable applications.

Кључне речи:
piezoelectric materials,energy harvesting,performance metrics,electromechanical constitutive equations.

Тематска област:
СИМПОЗИЈУМ А - Наука материје, кондензоване материје и физикa чврстог стања

Датум пријаве сажетка:
19.08.2025.

Конференцијa:
Contemporary Materials 2025 - Savremeni Materijali

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