The Ant’s Neck

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An ant carries foliage in its mouthMECHANICAL ENGINEERS marvel at the ability of a common ant to lift weights many times heavier than its own body. To understand this ability, engineers at Ohio State University, U.S.A., reverse engineered some of the ant’s anatomy, physical properties, and mechanical functions by means of computer models. The models were created using X-ray cross-sectional images (micro CT scans) and simulations of the forces an ant generates when carrying loads.

A critical part of the ant’s anatomy is its neck, which has to bear the full weight of loads grasped in its mouth. Soft tissues within the ant’s neck bind with the stiff exoskeleton of its thorax (body) and head in a manner that mimics the interlocking of fingers in folded hands. “The design and structure of this interface is critical for the performance of the neck joint,” says one of the researchers. “The unique interface between hard and soft materials likely strengthens the adhesion and may be a key structural design feature that enables the large load capacity of the neck joint.” Researchers hope that a clear grasp of how the ant’s neck functions will contribute to advancements in the design of man-made robotic mechanisms.

What do you think? Did the ant’s neck with its complex and highly integrated mechanical systems evolve? Or was it designed?

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