| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Groen, Pim
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 20243D Printing of Lead-Free Piezoelectric Ultrasound Transducers
- 2021In Situ Printing and Functionalization of Hybrid Polymer-Ceramic Composites Using a Commercial 3D Printer and Dielectrophoresis—A Novel Conceptual Designcitations
- 2020Harnessing Plasticity in an Amine-Borane as a Piezoelectric and Pyroelectric Flexible Filmcitations
- 2019Flexible Lead-Free Piezoelectric Composite Materials for Energy Harvesting Applicationscitations
- 2019Flexible Lead-Free Piezoelectric Composite Materials for Energy Harvesting Applicationscitations
- 2019Fabrication of piezoelectric composites using high-temperature dielectrophoresiscitations
- 2018Effect of TiB2 nano-inclusions on the thermoelectric properties of boron rich boron carbidecitations
- 2017Effect of the piezoelectric ceramic filler dielectric constant on the piezoelectric properties of PZT-epoxy compositescitations
- 2017Effect of the piezoelectric ceramic filler dielectric constant on the piezoelectric properties of PZT-epoxy compositescitations
Places of action
| Organizations | Location | People |
|---|
article
Flexible Lead-Free Piezoelectric Composite Materials for Energy Harvesting Applications
Abstract
<p>Vibrational piezoelectric energy harvesters are being investigated to replace batteries in embedded sensor systems. The energy density that can be harvested depends on the figure of merit, d<sub>33</sub>g<sub>33</sub>, where d<sub>33</sub> and g<sub>33</sub> are the piezoelectric charge and voltage coefficient. Commonly used piezoelectric materials are based on inorganic ceramics, such as lead zirconium titanate (PZT), as they exhibit high piezoelectric coefficients. However, ceramics are brittle, leading to mechanical failure under large cyclic strains and, furthermore, PZT is classified as a Substance of Very High Concern (SVHC). To circumvent these drawbacks, we fabricated quasi 1–3 potassium sodium lithium niobate (KNLN) ceramic fibers in a flexible polydimethylsiloxane (PDMS) matrix. The fibers were aligned by dielectrophoresis. We demonstrate for the structured composites values of d<sub>33</sub>g<sub>33</sub> approaching 18 pm<sup>3</sup> J<sup>−1</sup>, comparable to that of state-of-the-art ceramic PZT. This relatively high value is due to the reduced inter-particle distance in the direction of the electric field. As a confirmation, the stored electrical energy for both material systems was measured under identical mechanical loading conditions. The similar values for KNLN/PDMS and PZT demonstrate that environmentally friendly, lead-free, mechanically compliant materials can replace state-of-the-art environmentally-less-desirable ceramic materials in piezoelectric vibrational energy harvesters.</p>