Buckle up! New class of metamaterials is here

Buckle up! New class of metamaterials is here
by Staff Writers
Amsterdam, Netherlands (SPX) Jun 02, 2023

Materials science is set to take a revolutionary leap with the introduction of a new class of materials, thanks to researchers at the University of Amsterdam. Generally, materials are characterised as either stiff or as effective vibration absorbers. But rarely do we encounter a material that exhibits both traits simultaneously. If such a material existed, it could create a vast spectrum of applications, from nanotechnology design to aerospace engineering.

Employing Buckling for Breakthroughs in Materials Science The university research team has achieved a breakthrough in creating a material that is both stiff and effective at absorbing vibrations. Additionally, they've managed to keep it lightweight. David Dykstra, the lead author of the research, provides insight into this innovative development.

"Our study led us to explore materials that exhibit buckling, much like thin metal sheets. Assembled strategically, these buckled sheets are excellent vibration absorbers while maintaining significant material stiffness. Furthermore, the sheets can be kept relatively thin, ensuring the overall material remains light," explains Dykstra.

This transformation of metal sheets through buckling paves the way for a unique blend of material properties.

Wide-Ranging Applications The buckled materials have been carefully analysed by the researchers, and they confirmed the exceptional combination of stiffness and vibration dissipation in all of them.

The new lab-made materials, or 'metamaterials,' are expected to find applications in a variety of fields due to their unique combination of properties, unachievable with existing materials. The range of potential uses is broad, from macro applications in aerospace and automotive industries and numerous civil designs, to microscale applications such as microscopes and nanolithography.

Dykstra is enthusiastic about the possibilities: "As humans, we enjoy constructing things, both big and small. And we always want our structures to be light. If we can achieve this with materials that are both stiff and effective shock absorbers, it opens up the potential for improvements in existing designs and the creation of entirely new ones. The range of possible applications is truly limitless!"

For more information, please read the full research report titled "Buckling Metamaterials for Extreme Vibration Damping".