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

Static metasurfaces have shown to be prominent compact structures forreciprocal and frequency-invariant transformation of electromagnetic waves inspace. However, incorporating temporal variation to static metasurfaces wouldresult in dynamic apparatuses which are capable of four-dimensional tailoringof both the spatial and temporal characteristics of electromagnetic waves,leading to functionalities that are far beyond the capabilities of conventionalstatic metasurfaces. This includes nonreciprocal full-duplex wave transmission,pure frequency conversion, parametric wave amplification, spatiotemporaldecomposition, and space-time wave diffraction. This paper reviews recentprogress and opportunities offered by space-time metasurfaces to breakreciprocity, revealing their potential for low-energy, compact, integratednon-reciprocal devices and sub-systems, and discusses the future of thisexciting research front.

Four-Dimensional Wave Transformations By Space-Time Metasurfaces