Dispersion characteristics of negative refraction sonic crystals

2008 ◽  
Vol 403 (19-20) ◽  
pp. 3599-3603 ◽  
Author(s):  
Liang-Yu Wu ◽  
Lien-Wen Chen ◽  
Rex Ching-Cheng Wang
Keyword(s):  
Negative Refraction ◽  
Dispersion Characteristics ◽  
Sonic Crystals

The thermal effects on the negative refraction of sonic crystals

2008 ◽  
Vol 372 (15) ◽  
pp. 2701-2705 ◽  
Author(s):  
Liang-Yu Wu ◽  
Wen-Pei Yang ◽  
Lien-Wen Chen
Keyword(s):  
Thermal Effects ◽  
Negative Refraction ◽  
Sonic Crystals

Negative refraction of acoustic waves in two-dimensional sonic crystals

2005 ◽  
Vol 72 (3) ◽  
Author(s):  
Liang Feng ◽  
Xiao-Ping Liu ◽  
Yan-Bin Chen ◽  
Zhi-Peng Huang ◽  
Yi-Wei Mao ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
Negative Refraction ◽  
Two Dimensional ◽  
Sonic Crystals

Monte Carlo Algorithms for Moments of Transition Arrays

1988 ◽  
Vol 102 ◽  
pp. 79-81
Author(s):  
A. Goldberg ◽  
S.D. Bloom
Keyword(s):  
Monte Carlo ◽  
State Vector ◽  
Basis Vector ◽  
Collective State ◽  
Dispersion Characteristics ◽  
Dipole Strength ◽  
The Third ◽  
Monte Carlo Algorithms ◽  
Third Moment ◽  
Very High

AbstractClosed expressions for the first, second, and (in some cases) the third moment of atomic transition arrays now exist. Recently a method has been developed for getting to very high moments (up to the 12th and beyond) in cases where a “collective” state-vector (i.e. a state-vector containing the entire electric dipole strength) can be created from each eigenstate in the parent configuration. Both of these approaches give exact results. Herein we describe astatistical(or Monte Carlo) approach which requires onlyonerepresentative state-vector |RV> for the entire parent manifold to get estimates of transition moments of high order. The representation is achieved through the random amplitudes associated with each basis vector making up |RV>. This also gives rise to the dispersion characterizing the method, which has been applied to a system (in the M shell) with≈250,000 lines where we have calculated up to the 5th moment. It turns out that the dispersion in the moments decreases with the size of the manifold, making its application to very big systems statistically advantageous. A discussion of the method and these dispersion characteristics will be presented.

Dispersion Characteristics of Multi-Step Open Slow-Wave Systems of Finite Width: Analysis

1997 ◽  
Vol 51 (8) ◽  
pp. 77-84
Author(s):  
L. M. Buzik ◽  
O. F. Pishko ◽  
S.A. Churilova ◽  
O. I. Sheremet
Keyword(s):  
Slow Wave ◽  
Finite Width ◽  
Dispersion Characteristics

Discussion on Negative Refraction and Perfect Lens

PIERS Online ◽  
2005 ◽  
Vol 1 (1) ◽  
pp. 34-36 ◽  
Author(s):  
Long Gen Zheng ◽  
Wenxun Zhang
Keyword(s):  
Negative Refraction ◽  
Perfect Lens
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