English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Diffraction of elastic waves is considered for a system consisting of twoparallel arrays of thin (subwavelength) cylinders that are arrangedperiodically. The embedding media supports waves with all polarizations, onelongitudinal and two transverse, having different dispersion relations. Aninteraction with scatters mixes longitudinal and one of the transverse modes.It is shown that the system supports bound states in the continuum (BSC) thathave no specific polarization, that is, there are standing waves localized inthe scattering structure whose wave numbers lies in the first open diffractionchannels for both longitudinal and transverse modes. BSCs are shown to existsonly for specific distances between the arrays and for specific values of thewave vector component along the array. An analytic solution is obtained forsuch BSCs. For distances between the parallel arrays much larger than thewavelength, BSCs is proved to exist due to destructive interference of the farfield resonance radiation, similar to the interference in a Fabry-Perotinterferometer, that can occur simultaneously for both propagating modes.

Bound States in the Continuum in Elasticity