The piezoelectric materials that inhabit everything from our cell phones to musical greeting cards may be getting an upgrade thanks to work discussed in the journal Nature Materials released online Jan 21.
Xiaoyu ‘Rayne’ Zheng, assistant professor of mechanical engineering in the College of Engineering, and a member of the Macromolecules Innovation Institute, and his team have developed methods to 3D print piezoelectric materials that can be custom-designed to convert movement, impact and stress from any directions to electrical energy.
“Piezoelectric materials convert strain and stress into electric charges,” Zheng explained.
The piezoelectric materials come in only a few defined shapes and are made of brittle crystal and ceramic – the kind that require a clean room to manufacture. Zheng’s team has developed a technique to 3D print these materials so they are not restricted by shape or size. The material can also be activated – providing the next generation of intelligent infrastructures and smart materials for tactile sensing, impact and vibration monitoring, energy harvesting, and other applications.
Unleash the freedom to design piezoelectrics
Piezoelectric materials were originally discovered in the 19th century. Since then the advances in manufacturing technology has led to the requirement of clean-rooms and a complex procedure that produces films and blocks which are connected to electronics after machining. The expensive process and the inherent brittleness of the material, has limited the ability to maximize the material’s potential.
Zheng’s team developed a model that allows them to manipulate and design arbitrary piezoelectric constants, resulting in the material generating electric charge movement in response to incoming forces and vibrations from any direction, via a set of 3D printable topologies. Unlike conventional piezoelectrics where electric charge movements are prescribed by the intrinsic crystals, the new method allows users to prescribe and program voltage responses to be magnified, reversed or suppressed in any direction.
“We have developed a design method and printing platform to freely design the sensitivity and operational modes of piezoelectric materials,” Zheng said. “By programming the 3D active topology, you can achieve pretty much any combination of piezoelectric coefficients within a material, and use them as transducers and sensors that are not only flexible and strong, but also respond to pressure, vibrations and impacts via electric signals that tell the location, magnitude and direction of the impacts within any location of these materials.”
The Latest on: 3D printed piezoelectrics
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The Latest on: 3D printed piezoelectrics
- 3D printed piezoelectric materials line up for medical applications on March 15, 2019 at 6:05 am
(Courtesy: Xiaoyu (Rayne) Zheng) Put simply, these new, 3D printed piezoelectric materials are tunable, Zheng explains. “Unlike conventional piezoelectrics where electric charge movements are ... […]
- Mechanical engineers develop process to 3D print piezoelectric materials on January 27, 2019 at 9:01 pm
3D printing of piezoelectrics, sensors and transducers A factor in current piezoelectric fabrication is the natural crystal used. At the atomic level, the orientation of atoms are fixed. Zheng’s team ... […]
- 3D printing flexible resilient piezolelectrics on January 24, 2019 at 8:23 am
“By programming the 3D active topology, you can achieve pretty much any ... The team has demonstrated printed piezoelectrics wrapped around curved surfaces, and printed objects that combine strength ... […]
- Virginia Tech Researchers Using a New Method to Create 3D Printed Piezoelectric Materials on January 22, 2019 at 4:00 pm
Zheng, who has experience in 3D printing at both the nanoscale and microscale ... Natural crystals play a role in the manufacturing of piezoelectrics, as the orientation of atoms are fixed at the ... […]
- Mechanical Engineers Develop Process to 3D Print Piezoelectric Materials on January 22, 2019 at 10:39 am
Unlike conventional piezoelectrics where electric charge movements are ... milky mixture like melted crystal—that we print with a high-resolution digital light 3D printer," Zheng said. The team ... […]
- 3-D Printing Piezoelectric Materials on January 21, 2019 at 4:04 pm
Watch this video below to learn more: Instead of conventional piezoelectrics, where the electric charge movements involve intrinsic crystals, the new 3D printing method allows users to prescribe ... […]
- Mechanical engineers develop process to 3D print piezoelectric materials on January 21, 2019 at 8:34 am
Internal topology of 3D printed piezoelectrics spanning the width of human hair. (Image: Virginia Tech) "We have developed a design method and printing platform to freely design the sensitivity and ... […]
- 3D printing makes rigid piezoelectrics flexible for wearables and smart structures on January 21, 2019 at 8:33 am
Materials made by a new 3D printing process could harvest energy to power everything from wearable devices to infrastructure sensors. Researchers from Virginia Tech university in the US are placing ... […]
- An affordable, self-correcting, multi-material 3D printing platform on September 1, 2015 at 10:57 am
Research on 3D printing (also called ... The system relies on inkjet printer technology, with the printhead module containing five channels, each of which can house different materials. It uses ... […]
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