Metamaterial with randomized patterns for negative refraction of electromagnetic waves

2006 ◽  
Vol 88 (3) ◽  
pp. 031908 ◽  
Author(s):  
H. Chen ◽  
L. Ran ◽  
D. Wang ◽  
J. Huangfu ◽  
Q. Jiang ◽  
...  
Keyword(s):  
Electromagnetic Waves ◽  
Negative Refraction

Negative refraction of plane electromagnetic waves in non-uniform double-negative media

2019 ◽  
Vol 44 (5) ◽  
pp. 1125 ◽  
Author(s):  
L. A. Pazynin ◽  
V. L. Pazynin ◽  
H. O. Sliusarenko
Keyword(s):  
Electromagnetic Waves ◽  
Negative Refraction ◽  
Double Negative

TOTAL AND NEGATIVE REFRACTION OF ELECTROMAGNETIC WAVES

2005 ◽  
Vol 19 (01n02) ◽  
pp. 21-33 ◽  
Author(s):  
YONG ZHANG ◽  
A. MASCARENHAS
Keyword(s):  
Refractive Index ◽  
Group Velocity ◽  
Effective Refractive Index ◽  
Electromagnetic Waves ◽  
Negative Refraction ◽  
Negative Refractive Index ◽  
Negative Group ◽  
Crystalline Materials ◽  
Refractive Index Material ◽  
Negative Group Velocity

Recently there has been a great deal of interest in an unusual category of material, that is, a material that exhibits negative refractive index or more generally negative group velocity. Perhaps the most immediate application of this type of material is in an area known as total and negative refraction, which may potentially lead to many novel optical devices. The reason that the phenomenon of total and negative refraction has become so interesting to the physics community is also due largely to the notion that this phenomenon would never occur in conventional materials with positive refractive index. It turns out that total and negative refraction can be realized even in natural crystalline materials or in artificial materials (e.g. photonic crystals) without negative (effective) refractive index. In this brief review, after providing a brief historic account for the research related to finding materials with negative group velocity and achieving negative refraction, we discuss the three primary approaches that have yielded experimental demonstrations of negative refraction, in an effort to clarify the underlying physics involved with each approach. A brief discussion on the subwavelength resolution application of the negative (effective) refractive index material is also given.

Negative refraction of modulated electromagnetic waves

2002 ◽  
Vol 81 (15) ◽  
pp. 2713-2715 ◽  
Author(s):  
D. R. Smith ◽  
D. Schurig ◽  
J. B. Pendry
Keyword(s):  
Electromagnetic Waves ◽  
Negative Refraction

scholarly journals Design, fabrication and characterization of indefinite metamaterials of nanowires

2011 ◽  
Vol 369 (1950) ◽  
pp. 3434-3446 ◽  
Author(s):  
Jie Yao ◽  
Yuan Wang ◽  
Kun-Tong Tsai ◽  
Zhaowei Liu ◽  
Xiaobo Yin ◽  
...  
Keyword(s):  
Optical Properties ◽  
Electromagnetic Waves ◽  
Large Scale ◽  
Negative Refraction ◽  
Defect Density ◽  
Porous Alumina ◽  
Broad Band ◽  
Porous Alumina Template ◽  
Fabrication And Characterization

Indefinite optical properties, which are typically characterized by hyperbolic dispersion relations, have not been observed in naturally occurring materials, but can be realized through a metamaterial approach. We present here the design, fabrication and characterization of nanowire metamaterials with indefinite permittivity, in which all-angle negative refraction of light is observed. The bottom-up fabrication technique, which applies electrochemical plating of nanowires in porous alumina template, is developed and demonstrated in achieving uniform hyperbolic optical properties at a large scale. We developed techniques to improve the uniformity and to reduce the defect density in the sample. The non-magnetic design and the off-resonance operation of the nanowire metamaterials significantly reduce the energy loss of electromagnetic waves and make the broad-band negative refraction of light possible.

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