Work

Achieving wideband wavefront manipulation in asymmetric media by phase-engineered metasurfaces with near-unity transmission

Year: 2026

Type: article

Abstract: Evaluation of aging infrastructure and imaging of biological matter are restricted by the bandwidth of electromagnetic wave manipulation in such asymmetric transmission scenarios. Here, we propose a theoretical design strategy for wideband gradient Huygens’ metasurfaces that simultaneously achieve wideband impedance matching and wavefront transformation without increasing device complexity, compared to prior approaches. Our cascaded design strategy integrates dielectric spacers as a vital degree of freedom to harmonize and optimize resonance and propagation phases. We achieve an approximately 13% relative bandwidth in the X-band with near-unity transmission across 2π phase coverage, showcasing a substantial performance leap over existing solutions. Numerically and experimentally, we have demonstrated the wideband beam steering and energy focusing in asymmetric systems. This approach establishes a scalable framework for high-efficiency, wideband metasurfaces with potential applications in nondestructive testing, imaging, sensing, and next-generation wireless communications. Manipulating waves across different materials is limited by signal loss and a narrow bandwidth. Xiaojing Li and colleagues propose a metasurface design that achieves efficient, wideband control of electromagnetic waves at such interfaces.

Source: Communications Engineering

DOI: 10.1038/s44172-026-00645-0

Authors: Xiaojing Li, Tong Hao, Runze Yu, Wuan Zheng

Institutions: Tongji University, Xidian University, Lanzhou Jiaotong University

Language: English

Topic: Metamaterials and Metasurfaces Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,190

Funder: National Natural Science Foundation of China