Prestress tuning of negative refraction and wave channeling from flexural sources

10 Jan 2019 Bordiga G. Cabras L. Piccolroaz A. Bigoni D.

The quest for wave channeling and manipulation has driven a strong research effort on topological and architected materials, capable of propagating localized electromagnetical or mechanical signals. With reference to an elastic structural grid, which elements can sustain both axial and flexural deformations, it is shown that material interfaces can be created with structural properties tuned by prestress states to achieve total reflection, negative refraction, and strongly localized signal channeling... (read more)

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