scholarly journals MULTI-BAND NEGATIVE REFRACTIVE INDEX IN FERRITE-BASED METAMATERIALS

2013 ◽  
Vol 140 ◽  
pp. 457-469 ◽  
Author(s):  
Ke Bi ◽  
Ji Zhou ◽  
Xiaoming Liu ◽  
Chuwen Lan ◽  
Hongjie Zhao
Keyword(s):  
Refractive Index ◽  
Negative Refractive Index ◽  
Multi Band

Multi-band terahertz chiral metasurface with giant optical activities and negative refractive index based on T-shaped resonators

2018 ◽  
Vol 32 (30) ◽  
pp. 1850366 ◽  
Author(s):  
Hao Ran Chen ◽  
Yong Zhi Cheng ◽  
Jing Cheng Zhao ◽  
Xue Song Mao
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Optical Activity ◽  
Current Density ◽  
Physical Mechanism ◽  
Negative Refractive Index ◽  
Periodic Array ◽  
Density Distributions ◽  
Circular Dichroïsm ◽  
Multi Band

A novel chiral metasurface (CMS) based on T-shaped resonators is proposed and investigated numerically. The CMS is composed of a periodic array of bi-layered conjugated fourfold T-shaped structure. The retrieved effective electromagnetic (EM) parameters indicate that the multi-band negative refractive index associated with strong optical activity and circular dichroism (CD) effect is realized in terahertz (THz) region. The physical mechanism is illustrated by analyzing the current density distributions. Due to its exotic chiral optical properties, the proposed CMS is useful for the development of THz devices.

Multi-band Terahertz Chiral Metamaterials Based on Complementary Cross-wire Structure

2013 ◽  
Vol 455 ◽  
pp. 137-141 ◽  
Author(s):  
Pan Zhang ◽  
Zheng Ze Cheng ◽  
Hong Xu Cao
Keyword(s):  
Finite Element Method ◽  
Refractive Index ◽  
Negative Refractive Index ◽  
The Finite Element Method ◽  
Chiral Metamaterials ◽  
Terahertz Region ◽  
Fem Method ◽  
Potential Applications ◽  
Cross Wire ◽  
Multi Band

In this paper, a multi-band chiral metamaterials (CMMs) based on complementary cross-wire structure is proposed and studied numerically. The finite element method (FEM) method was used to simulate the EM properties of the designed structure. Numerical results indicate that the giant optical activity and multiband negative refractive index can be realized in terahertz region. The proposed CMMs may have some potential applications in novel terahertz device.Particle size of bayerite (d50) was about 24 μm. Al2O3was obtained after calcination at 1050 °C for 1.5 h.

Compact ring resonators using negative-refractive-index microstrip line

2005 ◽  
Vol 45 (4) ◽  
pp. 294-295 ◽  
Author(s):  
Aaron D. Scher ◽  
Christopher T. Rodenbeck ◽  
Kai Chang
Keyword(s):  
Refractive Index ◽  
Microstrip Line ◽  
Negative Refractive Index ◽  
Ring Resonators ◽  
Compact Ring

scholarly journals The potential of Refractive Index Nanobiosensing using a Multi-band Optically Tuned Perfect Light Metamaterial Absorber

2021 ◽  
pp. 1-1
Author(s):  
Zohreh Vafapour ◽  
Hossain Ghahraloud ◽  
Afsaneh Keshavarz ◽  
Md. Saiful Islam ◽  
Ali Rashidi ◽  
...  
Keyword(s):  
Refractive Index ◽  
Metamaterial Absorber ◽  
Multi Band

scholarly journals Optical pulse dynamics in active metamaterials with positive and negative refractive index

2013 ◽  
Vol 30 (4) ◽  
pp. 1077 ◽  
Author(s):  
Alexander O. Korotkevich ◽  
Kathryn E. Rasmussen ◽  
Gregor Kovačič ◽  
Victor Roytburd ◽  
Andrei I. Maimistov ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Pulse ◽  
Negative Refractive Index ◽  
Pulse Dynamics ◽  
Active Metamaterials
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