https://www.selleckchem.com/pr....oducts/ldc203974-imt
© 2020 The Authors. Published by WILEY‐VCH Verlag GmbH Co. KGaA, Weinheim.Photonic topological states have revolutionized the understanding of the propagation and scattering of light. The recent discovery of higher-order photonic topological insulators opens an emergent horizon for 0D topological corner states. However, the previous realizations of higher-order topological insulators in electromagnetic-wave systems suffer from either a limited operational frequency range due to the lumped components involved or a bulky str
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