A time-varying magnetic flux concentrator. (25th July 2016)

• Record Type: Journal Article
• Authors: Kibret, B; Premaratne, M; Lewis, P M; Thomson, R; Fitzgerald, P B
• Is Part Of: Journal of physics. Volume 49:Number 33(2016)
• Publication Date: 2016-07-25
• Subjects: magnetic flux concentration -- metamaterial -- magnetic device -- time response; Physics -- Periodicals; 530
• DOI: 10.1088/0022-3727/49/33/335003
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: It is known that diverse technological applications require the use of focused magnetic fields. This has driven the quest for controlling the magnetic field. Recently, the principles in transformation optics and metamaterials have allowed the realization of practical static magnetic flux concentrators. Extending such progress, here, we propose a time-varying magnetic flux concentrator cylindrical shell that uses electric conductors and ferromagnetic materials to guide magnetic flux to its center. Its performance is discussed based on finite-element simulation results. Our proposed design has potential applications in magnetic sensors, medical devices, wireless power transfer, and near-field wireless communications.