57 citations · 308 across the 17 of their papers we have counts for
17 papers
Nonlocal thermal Willis coupling in laminated conductors
Chunlin Wu, Gal Shmuel, Huiming Yin
Building on Willis' homogenization framework, recent work has revealed that heterogeneous conductors exhibit macroscopic thermal bianisotropy, in which the macroscopic heat flux an…
Symmetry-driven Phononic Metamaterials
Simon Yves, Michel Fruchart, Romain Fleury +4
Phonons are quasiparticles associated with mechanical vibrations in materials. They are at the root of the propagation of sound and elastic waves, as well as of thermal phenomena,…
Perspective on Non-Hermitian Elastodynamics
Johan Christensen, Michael R. Haberman, Ankit Srivastava +2
The manipulation of mechanical waves is a long-standing challenge for scientists and engineers, as numerous devices require their control. The current forefront of research in the…
Discrete One-dimensional Models for the Electromomentum Coupling
Kevin Muhafra, Michael R. Haberman, Gal Shmuel
Willis dynamic homogenization theory revealed that the effective linear momentum of elastic composites is coupled to their effective strain. % This result, which is partially due t…
Oblique scattering from non-Hermitian optical waveguides
Tal Goldstein, Gal Shmuel
A judicious design of gain and loss leads to counterintuitive wave phenomena that are inaccessible by conservative systems. Notably, such designs can give rise to laser-absorber mo…
Maximizing the electromomentum coupling in piezoelectric laminates
Majd Kosta, Alan Muhafra, René Pernas Salomón +2
Asymmetric piezoelectric composites exhibit coupling between their macroscopic linear momentum and electric field, a coupling that does not appear at the microscopic scale. This el…
Fundamental principles for generalized Willis metamaterials
René Pernas-Salomón, Gal Shmuel
Metamaterials whose momentum is constitutively coupled with their strain show promise in wave manipulation for engineering purposes and are called Willis materials. They were disco…
Oscillating vector solitary waves in soft laminates
Ron Ziv, Gal Shmuel
Vector solitary waves are nonlinear waves of coupled polarizations that propagate with constant velocity and shape. In mechanics, they hold the potential to control locomotion, mit…
Linking scalar elastodynamics and non-Hermitian quantum mechanics
Gal Shmuel, Nimrod Moiseyev
Recent years have seen a fascinating pollination of ideas from quantum theories to elastodynamics---a theory that phenomenologically describes the time-dependent macroscopic respon…
Anomalous energy transport in laminates with exceptional points
Ben Lustig, Guy Elbaz, Alan Muhafra +1
Recent interest in metamaterials has led to a renewed study of wave mechanics in different branches of physics. Elastodynamics involves a special intricacy, owing to a coupling bet…
Symmetry Breaking Creates Electro-Momentum Coupling in Piezoelectric Metamaterials
René Pernas-Salomón, Gal Shmuel
Metamaterials posses microstructure designed to acquire properties not found in nature. An epitome in acoustics and solid mechanics is Willis coupling, which refers to the particle…
Smooth waves and shocks of finite amplitude in soft materials
Ron Ziv, Gal Shmuel
Recently developed soft materials exhibit nonlinear wave propagation with potential applications for energy trapping, shock mitigation and wave focusing. We address finitely deform…
Dynamic homogenization of composite and locally resonant flexural systems
René Pernas-Salomón, Gal Shmuel
Dynamic homogenization aims at describing the macroscopic characteristics of wave propagation in microstructured systems. Using a simple method, we derive frequency-dependent homog…
On the band gap universality multiphase laminates and its applications
Ben Lustig, Gal Shmuel
\citet{Shmuel2016JMPS} discovered that all infinite band structures of waves at normal incidence in two-phase laminates are encapsulated in a compact universal manifold. We show th…
Universality and optimality of band-gaps in laminated media
Gal Shmuel, Ram Band
We find that the frequency spectra of layered phononic and photonic composites admit a universal struc- ture, independent of the geometry of the periodic-cell and the specific phys…
Band-gaps in electrostatically controlled dielectric laminates subjected to incremental shear motions
Gal Shmuel, Gal deBotton
The thickness vibrations of a finitely deformed infinite periodic laminate made out of two layers of dielectric elastomers is studied. The laminate is pre-stretched by inducing a b…
The Rayleigh-Lamb wave propagation in dielectric elastomer layers subjected to large deformations
Gal Shmuel, Massimiliano Gei, Gal deBotton
The propagation of waves in soft dielectric elastomer layers is investigated. To this end incremental motions superimposed on homogeneous finite deformations induced by bias electr…