Significant enhancement of magnetic shielding effect by using the composite metamaterial composed of mu-near-zero media and ferrite

Transparent Negative Index of Refraction Metamaterial Using a Wire Array in a Magnetic Host

We have made measurements of microwave transmission over the 12 - 18 GHz range and through a simple metamaterial exhibiting a negative index of refraction. The metamaterial consisted of an array of wires cladded in dielectric embedded in a magnetic ferrite. The ferrite replaced the cut-ring structure usually used to create the negative permeability. The dielectric cladding decoupled the ferrite from the wires, thereby allowing the wire array permittivity to be simultaneously negative with the permeability. The simplicity of the design allows for miniaturization of potential microwave devices b…

Unidirectional Loop Metamaterials (ULM) as Magnetless Artificial Ferrimagnetic Materials: Principles and Applications

This paper presents an overview of Unidirectional Loop Metamaterial (ULM) structures and applications. Mimicking electron spin precession in ferrites using loops with unidirectional loads (typically transistors), the ULM exhibits all the fundamental properties of ferrite materials, and represents the only existing magnetless ferrimagnetic medium. We present here an extended explanation of ULM physics and unified description of its component and system applications.

具有定制磁化强度的回旋超材料

Gyrotropic metamaterials with tailored magnetization

本文提出由 NdFeB 磁体嵌入软磁铁氧体基体的自偏置回旋超材料，实现零净磁化、宽温域均匀 45 度法拉第旋转与 X 波段有效隔离，突破传统磁性非互易器件的孔径与偏置限制。

力学超材料中的断裂与尺寸效应

Fracture and size effect in mechanical metamaterials

本研究采用变分方法结合Γ展开法分析力学超材料的断裂与尺寸效应，给出八面体框架二阶修正表达式，揭示晶格屏蔽机制及反屏蔽效应，解释单元越粗材料越弱的实验现象。