2015/11/24 by Jianfei Zhu, Wei Jiang, Yichao Liu +4 · 74 citations
Engineering · Materials Science · Physics and Astronomy · #Acoustics #Advanced Antenna and Metasurface Technologies #Antenna Design and Analysis #Cloak #Cloaking #Computer science #Detector #Magnetic field #Metamaterial #Metamaterials and Metasurfaces Applications #Microwave #Optics #Optoelectronics #Physics #Quantum mechanics #Telecommunications #physics.optics
paper · pdf · doi:10.1038/ncomms9931
published in Nature Communications 6(1), 8931 (Nature Portfolio) · 16 pages and 5 figures
openalex publication_date 2015/11/24 · arxiv created 2015/11/25 · arxiv updated 2015/11/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Invisible cloaking is one of the major outcomes of the metamaterial research, but the practical potential, in particular for high frequencies (for example, microwave to visible light), is fatally challenged by the complex material properties they usually demand. On the other hand, it will be advantageous and also technologically instrumental to design cloaking devices for applications at low frequencies where electromagnetic components are favourably uncoupled. In this work, we vastly develop the bilayer approach to create a three-dimensional magnetic cloak able to work in both static and dynamic fields. Under the quasi-static approximation, we demonstrate a perfect magnetic cloaking device with a large frequency band from 0 to 250 kHz. The practical potential of our device is experimentally verified by using a commercial metal detector, which may lead us to having a real cloaking application where the dynamic magnetic field can be manipulated in desired ways.