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

Living in a world of resonances, there have been significant progresses inthe field of excitation high-quality and multifunctional moments across a widerange of optical frequencies. Among all acknowledged resonances, the toroidalmultipoles have received copious interest in recent years due to havinginherent signatures in nature. As a fundamental member, toroidal dipole is astrongly localized electromagnetic excitation based on charge-currentdistributions, which can be squeezed in an extremely tiny spot. Although therehave been extensive studies on the behavior and properties of toroidal dipolesto develop all-optical devices based on this technology, so far, all analysesare restricted to the first (1st) order toroidal dipoles. In this work, using asimple technique, we successfully monitored supporting exquisite multi-loopsuper-toroidal (MLST) spectral features in a planar multipixel plasmonicmeta-atom. We quantitatively demonstrate that how a traditional toroidal dipolecan be switched to a super-toroidal moment by varying the dielectricpermittivity of the gaps between proximal pixels. This understanding paves newapproaches for the excitation of complex multi-loop toroidal moments inplasmonic metamaterials with high sensitivity, applicable for various practicalapplications.

Revealing Quantitative Observation of Multi-Loop Super-Toroidal Currents in Plasmonic Meta-Atoms