| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Clementi, Giacomo
University of Perugia
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2023Material strategies to enhance the performance of piezoelectric energy harvesters based on lead-free materialscitations
- 2023Material strategies to enhance the performance of piezoelectric energy harvesters based on lead-free materialscitations
- 2023Material strategies to enhance the performance of piezoelectric energy harvesters based on lead-free materialscitations
- 2022A smart battery free system for wireless condition monitoring using piezoelectric energy harvestercitations
- 2022A low-cost alternative lead-free piezoelectric LiNbO3 films for micro-energy sources
- 2022Self-Poled Heteroepitaxial Bi_(1-x) Dy_x FeO_3 Films with Promising Pyroelectric Propertiescitations
- 2022Self‐Poled Heteroepitaxial Bi(1−x)DyxFeO3 Films with Promising Pyroelectric Propertiescitations
- 2021LiNbO3 films – A low-cost alternative lead-free piezoelectric material for vibrational energy harvesterscitations
- 2021A Self-Powered and Battery-Free Vibrational Energy to Time Converter for Wireless Vibration Monitoringcitations
- 2021A Self-Powered and Battery-Free Vibrational Energy to Time Converter for Wireless Vibration Monitoringcitations
- 2021Highly coupled and low frequency vibrational energy harvester using lithium niobate on siliconcitations
- 2020LiNbO3 films : integration for piezoelectric and pyroelectric energy harvesting. ; LiNbO3 films : intégration pour la récupération de l'énergie piézoélectrique et pyroélectrique.
- 2018Piezoelectric and pyroelectric energyharvesting from lithium niobate films
- 2018Piezoelectric and pyroelectric energy harvesting from lithium niobate films
Places of action
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article
LiNbO3 films – A low-cost alternative lead-free piezoelectric material for vibrational energy harvesters
Abstract
Lead-free lithium niobate (LiNbO3) piezoelectric transducer is considered as a substitute to lead-based solutions for vibrational energy scavenging applications. Taking into account the much lower dielectric constant of LiNbO3 crystal compared to conventional piezoceramics (for instance PZT), we implement, in a global optimization approach, a thick single crystal film on silicon substrate with optimized clamped capacitance for better impedance-matching conditions. We design a piezoelectric cantilever based on (YXl)/36° LiNbO3 cut, enhancing the output voltage to achieve piezoelectric transducer performance compatible with harvesting device standards. For a cantilever with bending first resonant frequency of 1.14 kHz, an output power up to 380 μW is achieved, yielding a power density of 8.26 μW.mm−2, therefore comparable to lead-based and -free piezoelectric harvesters, while featuring a widely used material with well-established production process (hence lowering the cost for instance). The harvesting capabilities of the device allows starting a sensor node (from zero energy initial conditions) after 9 s only and then maintaining the possibility of sending data every 2 s (each transmission event consuming approximately 420 μJ) under continuous excitation.