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/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Epsilon-near-zero (ENZ) materials, including artificial metamaterials, havebeen advanced to mold laser beams and antenna-mediated radiated waves. Here wepropose an efficient method to control Ohmic losses inherent to natural ENZmaterials by the assembly of subwavelength structures in a nonperiodic matrixconstituting an ENZ metacoating. Implemented over plano-concave transparentsubstrates whose radius can be of only a few wavelengths, ENZ surface-reliefelements demonstrate to adequately shape a plane wave into highly localizedfields. Furthermore, our proposal provides an energy efficiency even higherthan an ideally-lossless all-ENZ plano-concave lens. Our procedure issatisfactory to generate aberration-free nonparaxial focused waves andaccelerating beams in miniaturized spaces.

Plano-concave microlenses with epsilon-near-zero surface-relief coatings for efficient shaping of nonparaxial optical beams