scholarly journals Complementary chiral metamaterials with giant optical activity and negative refractive index

2011 ◽  
Vol 98 (16) ◽  
pp. 161907 ◽  
Author(s):  
Zhaofeng Li ◽  
Kamil Boratay Alici ◽  
Evrim Colak ◽  
Ekmel Ozbay
Keyword(s):  
Refractive Index ◽  
Optical Activity ◽  
Negative Refractive Index ◽  
Chiral Metamaterials

Flexible chiral metamaterials with dynamically optical activity and high negative refractive index

2015 ◽  
Vol 29 (18) ◽  
pp. 1550087 ◽  
Author(s):  
Furkan Dincer ◽  
Muharrem Karaaslan ◽  
Emin Unal ◽  
Oguzhan Akgol ◽  
Cumali Sabah
Keyword(s):  
Numerical Simulation ◽  
Refractive Index ◽  
Numerical Analysis ◽  
Optical Activity ◽  
Negative Refractive Index ◽  
Experimental Results ◽  
Polarization Converter ◽  
Dynamic Design ◽  
Chiral Metamaterials ◽  
Good Agreement

We demonstrate numerically and experimentally chiral metamaterials (MTMs) based on gammadion-bilayer cross-wires that uniaxially create giant optical activity and tunable circular dichroism as a result of the dynamic design. In addition, the suggested structure gives high negative refractive index due to the large chirality in order to obtain an efficient polarization converter. We also present a numerical analysis in order to show the additional features of the proposed chiral MTM in detail. Therefore, a MTM sensor application of the proposed chiral MTM is introduced and discussed. The presented chiral designs offer a much simpler geometry and more efficient outlines. The experimental results are in a good agreement with the numerical simulation. It can be seen from the results that, the suggested chiral MTM can be used as a polarization converter, sensor, etc. for several frequency regimes.

Free-standing terahertz chiral meta-foils exhibiting strong optical activity and negative refractive index

2013 ◽  
Vol 103 (14) ◽  
pp. 141106 ◽  
Author(s):  
Jianfeng Wu ◽  
Binghao Ng ◽  
Shuvan P. Turaga ◽  
Mark B. H. Breese ◽  
Stefan A. Maier ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Activity ◽  
Negative Refractive Index ◽  
Free Standing

scholarly journals Chiral metamaterials with negative refractive index based on four “U” split ring resonators

2010 ◽  
Vol 97 (8) ◽  
pp. 081901 ◽  
Author(s):  
Zhaofeng Li ◽  
Rongkuo Zhao ◽  
Thomas Koschny ◽  
Maria Kafesaki ◽  
Kamil Boratay Alici ◽  
...  
Keyword(s):  
Refractive Index ◽  
Negative Refractive Index ◽  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Chiral Metamaterials

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.

High negative refractive index in chiral metamaterials

2012 ◽  
Vol 14 (7) ◽  
pp. 075101 ◽  
Author(s):  
W Panpradit ◽  
A Sonsilphong ◽  
C Soemphol ◽  
N Wongkasem
Keyword(s):  
Refractive Index ◽  
Negative Refractive Index ◽  
Chiral Metamaterials

Chiral Metamaterials With Negative Refractive Index Composed by an Eight-Cranks Molecule

2011 ◽  
Vol 10 ◽  
pp. 1488-1490 ◽  
Author(s):  
Gregorio J. Molina-Cuberos ◽  
Ángel J. Garcia-Collado ◽  
Ismael Barba ◽  
José Margineda
Keyword(s):  
Refractive Index ◽  
Negative Refractive Index ◽  
Chiral Metamaterials
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