Wireless power transfer based on magnetic metamaterials consisting of assembled ultra-subwavelength meta-atomsQ. Wu, Y. H. Li, N. Gao, F. Yang, Y. Q. Chen, K. Fang, Y. W. Zhang and H. ChenEPL, 109 6 (2015) 68005DOI: https://doi.org/10.1209/0295-5075/109/68005