1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Double bands of negative refractive index in the left-handed metamaterials with asymmetric defects
Rent:
Rent this article for
USD
10.1063/1.2426888
/content/aip/journal/apl/90/1/10.1063/1.2426888
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/1/10.1063/1.2426888
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of metamaterials used in the experiment. (a) Diagram of single HSRR. The dimensions of the HSRR are , , , and . (b) Symmetric pieces consist of three-layered HSRR on one side of the epoxy glass board and wires on the other, the wires are wide and long. (c) Asymmetric pieces consist of two-layered HSRR, and the wires are the same. (d) Distances between unit cells are , , and .

Image of FIG. 2.
FIG. 2.

Schematic of beam shifting experiment. The distance between the upper circular aluminum plate and lower plate is . is the length of the parallelogram-shaped sample’s short lateral, is the incidence angle on the surface of the sample, and is the circle graduation of the plate. By measuring the offset of transmission beam from the original incidence beam, the refractive index of the sample could be found.

Image of FIG. 3.
FIG. 3.

Transmission curve of the LHM with asymmetric defects. The left-handed transmission peak is divided into two bands, from and from with the crest of band at the frequencies of 9.10 and , and the stop band occurs near the frequency of .

Image of FIG. 4.
FIG. 4.

Result of beam shifting experiment. (a) At the frequency of , the crest of LHM appears at the angle of , the crest of Teflon appears at the angle of 3.7°, and the crest of air appears at the angle of 5.7°. (b) At the frequency of , the crest of LHM appears at the angle of , the crest of Teflon appears at the angle of 3.7°, and the crest of air appears at the angle of 5.7°.

Image of FIG. 5.
FIG. 5.

Measured results at the frequencies of 9.10, 9.35, and . The transmission power at any angle is weak to zero at the frequency of , and no negative refraction has been observed.

Image of FIG. 6.
FIG. 6.

Measured refractive index as a function of frequency. This LHM has two frequency bands of negative refraction from and from . Here, the refractive index of represents the fact that almost no ejected beam has been detected at any direction.

Loading

Article metrics loading...

/content/aip/journal/apl/90/1/10.1063/1.2426888
2007-01-04
2014-04-21
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Double bands of negative refractive index in the left-handed metamaterials with asymmetric defects
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/1/10.1063/1.2426888
10.1063/1.2426888
SEARCH_EXPAND_ITEM