학술논문
Magnetic Localized Surface Plasmons For Magnetic Resonance Imaging Applications
Document Type
Conference
Author
Source
2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) Artificial Materials for Novel Wave Phenomena (Metamaterials), 2020 Fourteenth International Congress on. :153-155 Sep, 2020
Subject
Language
Abstract
Recently, a great deal of research efforts has been focused on subwavelength photonics devices for magnetic resonance imaging (MRI), one of the cornerstone diagnostic techniques in life science. We show that the excitations of magnetic localized surface plasmons (MLSPs), surface waves hosted by a subwavelength negative magnetic permeability sphere, can yield a strong enhancement of the MRI scanner performances. In addition, we demonstrate that MLSPs can be mimicked by substituting the negative permeability metamaterial (MM) sphere with a homogeneous high-permittivity one of the same radius. Our approach overcomes several limits of the standard MM approaches (generally, based on effective medium theories) avoiding complex 3D fabrication procedures and removing the local spatial MM inhomogeneities whose presence is detrimental in subwavelength photonics applications.