A combination of experimental and numerical method for optimizing the sensitivity of ultra-thin piezoelectric sensor with interdigitated electrodes

Laurila, Mika‐Matti; Montero, Karem Lozano; Mäntysalo, Matti

doi:10.1088/2058-8585/acb36b

Cited by 2 publications

(2 citation statements)

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“…was used to generate the 2D FE model for the electric field distribution inside the P(VDF‐TrFE) porous aerogel during the poling step. The relative permittivity of the air (pores) was assumed to be 1.0 while for P(VDF‐TrFE) following relative permittivity matrix was used: [ 70 ]

\begin{equation}\left[ { \def\eqcellsep{&}\begin{array}{@{}*{3}{c}@{}} {{\varepsilon }_{r11}}&{}&{}\\ {}&{{\varepsilon }_{r21}}&{}\\ {}&{}&{{\varepsilon }_{r33}} \end{array} } \right] = \ \left[ { \def\eqcellsep{&}\begin{array}{@{}*{3}{c}@{}} {7.9}&{}&{}\\ {}&{7.1}&{}\\ {}&{}&{7.9} \end{array} } \right]\end{equation}

…”

Section: Methodsmentioning

confidence: 99%

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Printed and Stretchable Triboelectric Energy Harvester Based on P(VDF‐TrFE) Porous Aerogel

Lozano Montero,

Calvo Guzman,

Tewari

et al. 2024

Adv Funct Materials

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Developing energy harvesting devices is crucial to mitigate the dependence on conventional and rigid batteries in wearable electronics, ensuring their autonomous operation. Nanogenerators offer a cost‐effective solution for enabling continuous operation of wearable electronics. Herein, this study proposes a novel strategy that combines freeze‐casting, freeze‐drying, and printing technologies to fabricate a fully printed triboelectric nanogenerator (TENG) based on polyvinylidene fluorid‐etrifluoroethylene P(VDF‐TrFE) porous aerogel. First, the effects of porosity and poling on the stretchability and energy harvesting capabilities of P(VDF‐TrFE) are investigated, conducting a comprehensive analysis of this porous structure's impact on the mechanical, ferroelectric, and triboelectric properties compared to solid P(VDF‐TrFE) films. The results demonstrate that structural modification of P(VDF‐TrFE) significantly enhances stretchability increasing it from 7.7% (solid) to 66.4% (porous). This modification enhances output voltage by 66% and generated charges by 48% for non‐poled P(VDF‐TrFE) porous aerogel films compared to their non‐poled solid counterparts. Then, a fully printed TENG is demonstrated using stretchable materials, exhibiting a peak power of 62.8 mW m−2 and an average power of 9.9 mW m−2 over 100 tapping cycles at 0.75 Hz. It can illuminate light‐emitting diodes (LEDs) through the harvesting of mechanical energy from human motion. This study provides a significant advance in the development of energy harvesting devices.

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\begin{equation}\left[ { \def\eqcellsep{&}\begin{array}{@{}*{3}{c}@{}} {{\varepsilon }_{r11}}&{}&{}\\ {}&{{\varepsilon }_{r21}}&{}\\ {}&{}&{{\varepsilon }_{r33}} \end{array} } \right] = \ \left[ { \def\eqcellsep{&}\begin{array}{@{}*{3}{c}@{}} {7.9}&{}&{}\\ {}&{7.1}&{}\\ {}&{}&{7.9} \end{array} } \right]\end{equation}

…”

Section: Methodsmentioning

confidence: 99%

“…was used to generate the 2D FE model for the electric field distribution inside the P(VDF-TrFE) porous aerogel during the poling step. The relative permittivity of the air (pores) was assumed to be 1.0 while for P(VDF-TrFE) following relative permittivity matrix was used: [70] ⎡ ⎢ ⎢ ⎣…”

Section: Polarization Of P(vdf-trfe)mentioning

confidence: 99%