Experimental demonstration of ultra-large-scale terahertz all-dielectric metamaterials

• DOI: 10.1364/prj.7.000457
• Publication Date: 2019-03-20T14:46:23Z
• Authors: Ke Bi; Daquan Yang; Jia Chen; Qingmin Wang; Hongya Wu; Chuwen Lan; Yuping Yang
• Keywords: Split-ring resonator

All-dielectric metamaterials have emerged as a promising platform for low-loss and highly efficient terahertz devices. However, existing fabrication methods difficulty in achieving good balance between precision cost. Here, inspired by the nano-template-assisted self-assembly method, we develop micro-template-assisted (MTAS) method to prepare large-scale, high-precision, flexible ceramic microsphere all-dielectric with an area exceeding 900 cm×900 cm. Free from organic solvents, vacuum, complex equipment, MTAS ensures low-cost environmentally friendly fabrication. The resonators can be readily assembled into nearly arbitrary arrangements aggregates, such dimers, trimers, quadrumers, chains. Finally, using heat-shrinkable substrate dipole coupling effect, broadband reflector bandwidth of 0.15 THz reflection up 95% is demonstrated. This work provides versatile powerful metamaterials, potential applied wide variety high-efficiency