We unveil static non-reciprocity using mechanical metamaterials! They can transmit static motion in one way and block it in the other! Click here for the paper.

This picture shows a topological mechanical metamaterial that features large non-reciprocity : The right side moves when pushing on the left, but the left side moves much less when pushing on the right with the same force. Credits: Cockrell School of Engineering, The University of Texas at Austin.