1. A system for absorbing a flexural wave acting on a structure, the system comprising: a pair of resonators disposed on the structure and separated from each other by a separation distance; wherein the pair of resonators are arranged on the structure in a direction substantially similar to the direction of the flexural wave acting on the structure; wherein the separation distance is approximately one-quarter of a wavelength of the flexural wave acting on the structure, and wherein the structure has a top surface and a bottom surface, wherein one of the pair of resonators is disposed on the top surface of the structure and another of the pair of resonators is disposed on the bottom surface of the structure.