Elephant trunk whiskers exhibit material intelligence
Summary
A Max Planck-led collaboration reveals that elephant trunk whiskers use a stiff base to soft tip gradient, enabling precise contact sensing despite thick skin. The team used imaging, nanoindentation, and 3D-printed whisker models to characterize geometry, porosity, and stiffness gradients, and they propose bio-inspired sensing for robotics to reduce computational load. The work highlights potential robotic applications that mimic these natural gradients for delicate manipulation.