Advancement in various fields hinges on the best quality materials. Now, a new class of “scale-rich metamaterials” has been designed by introducing controlled disorder inspired by natural networks such as leaf vasculature and dragonfly wing veins. 

Engineers have spent decades chasing mathematical perfection when designing synthetic “metamaterials,” mimicking identical microscopic building blocks to create rigid honeycombs and lattices. A new collaboration between MIT and Northeastern University just proved that a little chaos works much better.

Physical tests proved these irregular materials resist impacts better, offer tunable stiffness, and protect fragile embedded objects.

This technology could advance the development of safer sports helmets and lightweight body armor. It may also enable precision acoustic lenses that control sound waves and vibrations with high accuracy.

The research introduces “scale-rich metamaterials.” These synthetic structures abandon uniform grids for messy, sprawling physical networks modeled after leaf vasculature, neural connections, and even the internet.

Uniform metamaterials share a weak spot. When a single cell in a repeating lattice cracks or punctures, the surrounding identical cells immediately follow suit, causing a chain-reaction collapse. MIT associate professor Carlos Portela and his team wanted to cut this localized failure, so they teamed up with Northeastern physicist Albert-László Barabási, a pioneer in network science.

Barabási spent his career mapping invisible webs — from social media links to financial markets — to see how networks resist collapse. Together, the researchers turned those abstract mathematical rules into tangible, physical matter.

The team wrote an algorithm that generates a virtual blueprint for a material without using a single repeating pattern.

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