In theory, it would be possible to build such a construction out of aluminium and other lightweight metals instead of plastic, says Matlack. In principle, it would just require a combination of lightweight material, structured in a lattice geometry, and embedded resonators with a larger mass density. The geometry of the lattice structure and the resonators would need to be optimally aligned to the anticipated vibrations.
The vibration absorbers are essentially ready for technical applications, says Matlack, but they are limited insofar as 3D printing technology is mostly geared toward small-scale production and material properties, such as the load-bearing capacity, cannot yet match those of components manufactured with traditional methods. Once this technology is ready for industrial use, there is nothing standing in the way of a broader application. A further application could be in wind turbine rotors, where minimising vibrations would increase efficiency. The technology could also conceivably be used in vehicle and aircraft construction as well as rockets.Literature
Matlack, K.-H., Bauhofer, A., Krödel, S., Palermo, A., Daraio, C., Composite 3D-printed metastructures for low-frequency and broadband vibration absorption
, PNAS, 7 July 2016, doi: 10.1073/pnas.1600171113Source