Numerical investigation of quasi-static magnetic cloak performance in time-varying magnetic field
Adam Steckiewicz , Agnieszka Choroszucho
AbstractOptical devices for manipulating electromagnetic and scalar fields are in a great interest nowadays. The magnetic metamaterials were recently expanded from static and high frequency electromagnetic fields to quasi-static magnetic fields. In this paper the bilayer structure for cloaking objects in time-varying, non-harmonic magnetic fields was investigated numerically. The cylindrical ferromagnetic object was surrounded by a broadband, anisotropic metamaterial. The proposed structure was sufficient to cloak the object placed in a dielectric background with externally excited magnetic impulse. The near-field distortion and impact of the layers thickness on cloaking efficiency was investigated. We showed a possibility of cloaking objects in transient magnetic fields using thin structures consisting of paramagnetic hybrid composite and conductive layer.
|Journal series||Romanian Journal of Physics, [Romanian Journal in Physics], ISSN 1221-146X, (N/A 70 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||quasi-static magnetic metamaterials, electromagnetic cloaking, nearfield analysis, transient fields|
|Internal identifier||ROC 19-20|
|License||Journal (articles only); published final; ; with publication|
|Score||= 70.0, 12-02-2020, ArticleFromJournal|
|Publication indicators||: 2017 = 0.807; : 2018 = 1.46 (2) - 2018=1.041 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.