3 papers
physics.class-ph2017
Inherent Negative Refraction on Acoustic Branch of Two Dimensional Phononic Crystals
Sia Nemat-Nasser
Guided by theoretical predictions, we have demonstrated experimentally the existence of negative refraction on the lowest two (acoustic) passbands (shear and longitudinal modes) of…
nlin.PS2017
Growth of Shock-Induced Solitary Waves in Granular Crystals
M. Arif Hasan, Sia Nemat-Nasser
Solitary waves (SWs) are generated in monoatomic (homogeneous) lightly contacting spherical granules by an applied input force of any time-variation and intensity. We consider fini…
cond-mat.mtrl-sci2016
Unified Homogenization of Photonic/Phononic Crystals: Controllable First-band Negative Refraction
Sia Nemat-Nasser
It is shown, for the first time, that negative refraction with positive phase velocity refraction can be realized (and controlled) over a wide range of frequency on the first (lowe…