Shapely Atoms

Abstract

The study of vibrational properties in engineered periodic structures relies on the early intuitions of Haüy and Boscovich, who regarded crystals as ensembles of periodically arranged mass points interacting via attractive and repulsive forces. Contrary to electromagnetism, where mechanical properties do not couple to the wave propagation mechanism, in elasticity this paradigm inevitably led to low stiffness and high-density materials. Here, we transcend the Haüy-Boscovich perception, proposing the concept of shaped atoms, which relaxes the link between the mass and inertia of atoms, to achieve unusual dynamic behavior at lower frequencies, leaving the stiffness unaltered. Exploiting tacticity, we successfully demonstrate its feasibility in continuous elastic chiral systems, opening the way to the conception of new mechanisms for wave control, selective wave filtering and vibration isolation.

arXiv comment8 pages + 5 pages supplementary materials. 7 figures

References in corpus (8)

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Cited by in corpus (7)

• A Nonlinear Damped Metamaterial: Wideband Attenuation with Nonlinear Bandgap and Modal Dissipation
• Experimental Observation and Description of Bandgaps Opening in Chiral Phononic Crystals by Analogy with Thomson scattering
• Inherent Non-Linear Damping in Resonators with Inertia Amplification
• The emergence of low-frequency dual Fano resonances in chiral twisting metamaterials
• Longitudinal-Twist Wave Converter based on Chiral Metamaterials
• Brillouin-Mandelstam Light Scattering Spectroscopy: Applications in Phononics and Spintronics
• Stress-optimized inertial amplified metastructure with opposite chirality for vibration attenuation