Unprecedented three-dimensional magnetic cloak working from DC to 250 kHz

Jianfei Zhu, Wei Jiang, Yichao Liu, Ge Yin, Jun Yuan, Sailing He ‡ and Yungui Ma ‡ State Key Lab of Modern Optical Instrumentation, Centre for Optical and Electromagnetic Research, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310058, China Department of Electromagnetic Engineering, School of Electrical Engineering, Royal Institute of Technology, S-100 44 Stockholm, Sweden *These authors contributed equally to this work. E-mail: yungui@zju.edu.cn or sailing@kth.se