The law of reciprocity in acoustics and elastodynamics codifies a relation of symmetry
between action and reaction in fluids and solids. In its simplest form, it states that the …

Acoustic/elastic metamaterials exhibit a wealth of unusual properties conducive to wave
manipulation. This review outlines state-of-the-art developments from FPUT chains, granular …

In linear time-invariant dynamical and acoustical systems, reciprocity holds by the Onsager-
Casimir principle of microscopic reversibility, and this can be broken only by odd external …

In linear time-invariant systems acoustic reciprocity holds by the Onsager-Casimir principle
of microscopic reversibility, and it can be broken only by odd external biases, nonlinearities …

In this paper, we propose and numerically study a nonlinear, asymmetric, passive
metamaterial that achieves giant non-reciprocity with (i) broadband frequency operation and …

In linear acoustics, the reciprocal behavior of waves traveling in periodic materials can be
manipulated by imposing external or configurational biases to the system. However, the …

The study of wave propagation in chains of anharmonic periodic systems is of fundamental
importance to understand the response of dynamical absorbers of vibrations and acoustic …

Non-reciprocal phase shifters have been attracting a great deal of attention due to their
important applications in filtering, isolation, modulation, and mode locking. Here, we …

Circumventing the reciprocity invariance has posed an interesting challenge in the design of
modern devices for wave engineering. In passive devices, operating the device in the …

In this paper we investigate an elastically linked, nonlinear, in-plane rotator system and
experimentally study its nonreciprocal impulse response. The nonlinearity of the system …