Line Plot from Scientific Research

We use audible sound to rotate an object constructed from three balls glued together in a disordered medium. First, we move the target in the anticlockwise direction (left part of the figure) and then abruptly switch its direction of rotation (right part). At each step (20°), we extract from a far-field S matrix measurement the WignerSmith operator with respect to the rotation angle , which allows us to send the wavefront with maximal angular-momentum transfer.

DOI