Before a seed can grow into a tree, flower or plant, it needs to successfully implant itself in soil – a delicate and complex process. Seeds need to be able to take root and then remain protected from hungry birds and harsh environmental conditions. For the Erodium flower to implant a seed, its stalk forms a tightly wound, seed-carrying body with a long, curved tail at the top. When it begins to unwind, the twisting tail engages with the ground, causing the seed carrier to push itself upright. Further unwinding creates torque to drill down into the ground, burying the seed.
Inspired by Erodium’s magic, Mechanical and Aerospace Engineering Professor Teng Zhang worked with Lining Yao from Carnegie Mellon University (CMU) and a team of collaborators to engineer a biodegradable seed carrier referred to as E-seed. Continue Reading