3D printed architected shell-based ferroelectric metamaterials with programmable piezoelectric and pyroelectric properties
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2024-02-11 |
| Journal | Nano Energy |
| Authors | Jiahao Shi, Kang Ju, Haoyu Chen, Armin Mirabolghasemi, Saad Akhtar |
| Institutions | McGill University |
| Citations | 40 |
Abstract
Section titled āAbstractāPorous ferroelectric materials with conventional pore topologies have shown enhanced multifunctional performance. Here, we introduce a novel design and fabrication route to realize shell-based ferroelectric metamaterials, including spinodoids and diamond shellulars, with previously inaccessible multiphysical properties using a customized piezoceramic additive manufacturing platform. The effective properties of ferroelectric spinodoid metamaterials are predicted by a modified homogenization method. Assisted by a convolutional neural network, their architecture-multiphysical property linkage is established. Unlike porous ferroelectrics, certain shell-based ferroelectric metamaterials retain a piezoelectric constant d33 identical to their solid ferroelectric materials even at relative densities, Ļr, as low as 0.3. Extremely low dielectric constants are attained, leading to enhanced sensitivity to force and temperature fluctuations. For example, a lamellar spinodoid with Ļr = 0.5 exhibits a giant piezoelectric voltage constant 0.178 Vm/N and up to 12 times higher voltage, in response to an impact load, than its fully-solid ferroelectric counterpart. We demonstrate how local voltage responses under multidirectional mechanical forces can be manipulated by capitalizing on the diverse transverse piezoelectric anisotropies and graded design. The programmability and multifunctionality of shell-based ferroelectric metamaterials open the door for their applications in high-performance pressure and thermal sensors and intelligent building blocks for smart infrastructures.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2008 - Fundamentals of piezoelectricity
- 2014 - Pyroelectric materials and devices for energy harvesting applications [Crossref]
- 2016 - The negative piezoelectric effect of the ferroelectric polymer poly(vinylidene fluoride) [Crossref]
- 2014 - Self-powered cardiac pacemaker enabled by flexible single crystalline PMN-PT piezoelectric energy harvester [Crossref]
- 2020 - Multifunctional barium titanate ceramics via chemical modification tuning phase structure [Crossref]
- 2022 - Design and printing of proprioceptive three-dimensional architected robotic metamaterials [Crossref]
- 2014 - Highly-efficient, flexible piezoelectric PZT thin film nanogenerator on plastic substrates [Crossref]
- 2018 - Biodegradable piezoelectric force sensor [Crossref]
- 2016 - 3D printing of piezoelectric element for energy focusing and ultrasonic sensing [Crossref]
- 2016 - Hole array perfect absorbers for spectrally selective midwavelength infrared pyroelectric detectors [Crossref]