Cuttlefish-Inspired 3D Printed Body Armor to Redefine Safety

Researchers at San Diego State University are revolutionizing body armor design, taking inspiration from the resilience and adaptability of marine life. Spearheaded by Professor Yang Yang and his research team, this transformative approach integrates cutting-edge sensing capabilities into protective gear developed from stiff, yet highly durable composite. And it has been made possible through the use of 3D printing.

While marine life has previously been explored for inspiration in developing protective equipment, researchers at SDSU have focused their attention specifically on the durability of the cuttlefish. Renowned for its lightweight yet incredibly resilient properties, Professor Yang and his colleagues sought to emulate its structural makeup. As some species of cuttlefish can thrive under the immense pressure found 2,000 feet below the ocean’s surface, they have evolved a rigid, but lightweight microstructure within their shells to help them cope with these extreme conditions. This microstructure, known as wall-septa, enables cuttlefish to effectively absorb and dissipate energy to easily navigate this intense physical pressure.

Photo Credits: BBC Wildlife

Recognizing the potential of this capability, SDSU researchers identified a significant application in impact reduction. To mimic the structural efficiency of wall-septa, Yang and his team cultivated piezoelectric Rochelle salt crystals, integrating them with cuttlefish bone. In doing so, they have developed a novel composite material that dramatically absorbs impact force.