28 November 2018
Vol 3, Issue 24

About The Cover

Cover image expansion

ONLINE COVER A Soft Touch. Measuring and distinguishing in real time normal and shear forces are crucial for slip detection and interaction with fragile bodies. Boutry et al. developed a multilayer electronic skin that distinguished subtle differences in force direction with microstructures inspired by human skin and sunflower floret spirals. They covered the hand of a robotic arm with the e-skin and programmed a controller to stop the automatic downward movement of the arm when a certain amount of force was detected. The resulting sensory feedback allowed the system to respond quickly enough to avoid damaging lightweight objects. [CREDIT: A. FOUDEH, C. BOUTRY, M. NEGRE, M. JORDA, O. VARDOULIS, Z. BAO/STANFORD UNIVERSITY]