A dual-band programmable metasurface for terahertz beam steering
Abstract
Terahertz programmable metasurfaces hold significant promise for next-generation communications due to their capability to steer electromagnetic waves. However, most existing terahertz metasurfaces operate at only a single frequency, leaving much of the vast terahertz spectrum underutilized. In this study, we introduce a “butterfly” programmable dual-band metasurface, integrated with liquid crystals, designed for efficient terahertz beam steering. By applying bias voltages, the metasurface achieves a phase change of nearly 270° at two distinct frequencies, ∼400 and ∼700 GHz. Our experimental results demonstrate that the butterfly metasurface is compatible with both binary and ternary coding schemes at these frequencies, remarkably enhancing beam-steering performance and expanding spatial coverage. This advancement in dual-band metasurface technology marks a step forward in harnessing the full potential of the terahertz spectrum, opening another pathway for broadband terahertz communication and imaging applications.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (11)
Yucheng Xu
Tingzi Zhao
Research Institute of Superconductor Electronics (RISE) & Key Laboratory of Optoelectronic Devices and Systems with Extreme Performances of MOE, School of Electronic Science and Engineering, Nanjing University 1 , Nanjing 210023,
Guanyu Chen
Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Academy for Engineering & Technology
Aoxuan Liu
Research Institute of Superconductor Electronics (RISE) & Key Laboratory of Optoelectronic Devices and Systems with Extreme Performances of MOE, School of Electronic Science and Engineering, Nanjing University 1 , Nanjing 210023,
Zhiqin Huang
School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology 3 , Nanjing 210044,
Jingbo Wu
Caihong Zhang
Biaobing Jin
Jian Chen
Peiheng Wu
Kebin Fan
Research Institute of Superconductor Electronics (RISE) and Key Laboratory of Optoelectronic Devices and Systems with Extreme Performances of MOE, School of Electronic Science and Engineering, Nanjing University 1 , Nanjing 210023,