Anomalous Behavior of Highly Active Helical Swimmers

Artificially designed self-propelled objects can allow studying active matter phenomena with great detail that is not possible in natural, e.g. biological systems. Here, we show experimental results on helical shaped, magnetically actuated, reciprocal swimmers, where the degree of randomness sequence plays an important role determining their effective motility. for first time at high activity levels further affected by presence surface, which turn a non-monotonic increase motility as function magnetic drive. It will be interesting to extend these studies denser systems swimmers interact each other through hydrodynamic forces.