Overview
- Led by the Max Planck Institute for Intelligent Systems, researchers analyzed Asian elephant trunk hairs and published their findings in Science in February 2026.
- The hairs transition from a stiff, plastic-like base to a soft, rubbery tip, enabling elephants to determine where contact occurs and how far the trunk is from an object.
- 3D‑printed enlarged hairs and computer simulations validated the sensing principle, supporting the concept as an example of embodied intelligence.
- Structural features include a flattened cross‑section and porous channels that reduce weight and improve resilience, with lengths of about 3–5 cm near the tip and up to 20 cm near the base.
- Unlike rodent whiskers, the hairs are immobile and uniquely graded; researchers say the design could inspire next‑generation robotic sensors, though engineering translation remains ongoing.