An angle-selective photonic crystal for multi-physical sensing applications.

This study reports a high-transmission photonic crystal (PC) that was optimized for TM waves at a frequency of 43.8 GHz and engineered using photonic band gap (PBG) principles to achieve angle selection. The structure demonstrated a remarkable transmission from -68° to 0°, consistently exceeding 80% efficiency.

Dual-channel asymmetric absorption-transmission properties based on plasma metastructures-photonic crystals.

In this paper, a kind of plasma metastructures-photonic crystals (PMPC) structure is proposed to investigate the absorption and transmission properties of electromagnetic waves (EWs) incident from opposite directions. The results show that the PMPC can achieve a dual-channel asymmetric absorption-transmission (AAT) phenomenon. At an operating bandwidth (OB) of 2.

A layered metastructure for privacy protection based on the Brewster angle.

In this paper, a kind of layered metastructure (LMS) is proposed by stacking multi-layer dielectric plates. By adjusting the dielectric constant of medium A (set as ), the Brewster angle (BA) of incident electromagnetic waves (EMWs) has been directly selected. At the same time, the operating band of the above angle selection (AS) can be extended to the whole visible light band (VLB) which covers 400 nm to 700 nm according to Bragg reflection.