Magnetically Switchable Adhesion and Friction of Soft Magnetoactive Elastomers

Herein, the effect of an applied moderate (≈240 mT) magnetic field on work adhesion (WoA) mechanically soft (the shear modulus ≈10 kPa) magnetoactive elastomer (MAE) samples with two different mass fractions (70 and 80 wt%) carbonyl iron powder (CIP) is concerned. The unfilled sample used for comparison. Due to some sedimentation filling particles, concentration inclusions in thin (≈10 μm) subsurface layers different. It shown that WoA increases (up 1.8‐fold) particle‐enriched side (PES) its value higher filler concentration. On particle‐depleted (PDS), does not depend particle field. Adhesion friction are coupled MAEs. No statistically significant difference coefficient, determined from extended Amontons´ law, depending side, CIP concentration, or presence found. However, PDS demonstrates significantly critical stress compared PES absence Correlations between surface properties discussed. Obtained results useful development magnetically controllable robots.