Remote terahertz wireless power transfer with self-resonating spoof plasmonic structures

In this paper, we use a pair of self-resonating subwavelength spoof plasmonic structures to achieve remote non-radiative terahertz wireless power transfer, while nearly without affecting the electromagnetic environment of free space around the structure. The resonating frequency and quality factor of the magnetic dipole mode supported by the spoof plasmonic structures can be freely tuned by tailoring the geometric structure. By putting the weak source and detector into the self-resonating structures, we can find that the effective non-radiative terahertz power transferring distance can reach several hundred times the radius of the structures. Finally, we also demonstrate the efficient wireless power transfer capability for the multi-target receiving system. These results may provide a novel approach to the design of non-radiative terahertz wireless power transfer and communications. (c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Automated summary

In this paper, remote non-radiative terahertz wireless power transfer is achieved using self-resonating subwavelength spoof plasmonic structures, while minimizing the impact on the surrounding electromagnetic environment. The resonating frequency and quality factor of the magnetic dipole mode can be adjusted by tailoring the geometric structure.