Switchable Negative Group Delay Based on Sandwich Topological Protection Structure in Terahertz Band

A switchable enhancement group delay in the terahertz band based on a novel sandwich topology protection structure with graphene is proposed in this paper. The notable phase transition of the reflected beam comes from the topological edge-protected mode excited at the sandwich photonic crystal surfa...

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Bibliographic Details
Main Authors: Jiao Xu, Xianmin Pan, Jiao Tang, Xianghua Peng, Yuxiang Peng
Format: Article
Language:English
Published: MDPI AG 2025-02-01
Series:Nanomaterials
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Online Access:https://www.mdpi.com/2079-4991/15/4/251
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