67 citations · 109 across the 3 of their papers we have counts for
7 papers
Waves over a periodic progressive modulation: A python tutorial
Hussein Nassar, Andrew N. Norris, Guoliang Huang
This chapter presents a selection of theoretical and numerical tools suitable for the study of wave propagation in time-dependent media. The focus is on one-dimensional spring-mass…
Discrete Transformation Elasticity: An Approach to Design Lattice-based Polar Metamaterials
Yangyang Chen, Hussein Nassar, Guoliang Huang
The transformation method is a powerful tool for providing the constitutive parameters of the transformed material in the new coordinates. In transformation elasticity, a general c…
Microtwist elasticity: A continuum approach to zero modes and topological polarization in Kagome lattices
Hussein Nassar, Hui Chen, Guoliang Huang
The topologically polarized isostatic lattices discovered by Kane and Lubensky (2014, Nat. Phys. 10, 39-45) challenged the standard effective medium theories used in the modeling o…
Polar metamaterials: A new outlook on resonance for cloaking applications
H. Nassar, Y. Y. Chen, G. L. Huang
Rotationally resonant metamaterials are leveraged to answer a longstanding question regarding the existence of transformation-invariant elastic materials and the ad-hoc possibility…
Elastic quantum spin-Hall effect in Kagome lattices
Hui Chen, Hussein Nassar, Andrew N. Norris +2
A Quantum Spin-Hall Insulator (QSHI) is implemented into a simple mass-spring Kagome lattice. The transition from the trivial state to the topological one is described by an invari…
Observation of nonreciprocal wave propagation in a dynamic phononic lattice
Yifan Wang, Behrooz Yousefzadeh, Hui Chen +3
Acoustic waves in a linear time-invariant medium are generally reciprocal; however, reciprocity can break down in a time-variant system. In this Letter, we report on an experimenta…