Dual-Field Superfocusing Based on Near-field Metasurfaces

被引：0
|
作者：
Han, Feng-Yuan [1 ]
Yin, Li-Zheng [1 ]
Wang, Yi-Dong [1 ]
Liu, Pu-Kun [1 ]
机构：
[1] Peking Univ, Dept Elect, Beijing 100871, Peoples R China
来源：
2020 45TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) | 2020年
关键词：
D O I：
10.1109/IRMMW-THZ46771.2020.9370814
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this work, a terahertz near-field metasurface is proposed to superfocus both electric and magnetic fields. To achieve a sharp dual-field superfocusing, a sort of minuscule unit cell is designed to elaborately arrange the array accordingly. The full widths at half-maximum (FWHMs) of the electric and magnetic fields are 0.079 lambda and 0.052 lambda at a distance of 0.1 lambda. The proposed dual-field superfocusing holds potential benefits for multiple-target sensing, extreme subwavelength lithography, super-resolution imaging, and data storage and access.
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