Guided-wave resonance transmission in one-dimensional metallic gratings with surface impedances on its walls of Slits

2010 ◽  
Author(s):  
Ruey Bing Hwang
Keyword(s):  
Guided Wave ◽  
One Dimensional ◽  
Wave Resonance ◽  
Metallic Gratings ◽  
Resonance Transmission

Axial guided wave characteristics in functionally graded one-dimensional hexagonal piezoelectric quasi-crystal cylinders

2021 ◽  
pp. 108128652110134
Author(s):  
B. Zhang ◽  
X.H. Wang ◽  
L. Elmaimouni ◽  
J.G. Yu ◽  
X.M. Zhang
Keyword(s):  
Coupling Effect ◽  
Energy Conversion Efficiency ◽  
Guided Wave ◽  
Functionally Graded ◽  
Phonon Modes ◽  
One Dimensional ◽  
Longitudinal Modes ◽  
Wave Characteristics ◽  
Piezoelectric Effects ◽  
Hollow Cylinders

In one-dimensional hexagonal piezoelectric quasi-crystals, there exist the phonon–phason, electro–phonon, and electro–phason couplings. Therefore, the phonon–phason coupling and piezoelectric effects on axial guided wave characteristics in one-dimensional hexagonal functionally graded piezoelectric quasi-crystal (FGPQC) cylinders are investigated by utilizing the Legendre polynomial series method. The dispersion curves and cut-off frequencies are illustrated. Wave characteristics in three hollow cylinders with different quasi-periodic directions are comparatively studied. Some new wave phenomena are revealed: the phonon–phason coupling and piezoelectric effects on the longitudinal and torsional phonon modes ( N = 0) vary as the quasi-periodic direction changes; the phonon–phason coupling effect on flexural–torsional modes in the r-, z-FGPQC hollow cylinders, and on flexural–longitudinal modes in ϑ-FGPQC hollow cylinders increases as N increases. The corresponding results obtained in this work lay the theoretical foundation for the design and manufacture of piezoelectric transducers with high resolution and energy-conversion efficiency.

Highly sensitive method for concentration and absorption measurements by guided-wave resonance

2000 ◽  
Author(s):  
Guang Chen ◽  
Yi Jiang ◽  
Zhuangqi Cao ◽  
Qishun Shen ◽  
Xiaoming Dou ◽  
...  
Keyword(s):  
Guided Wave ◽  
Wave Resonance ◽  
Highly Sensitive ◽  
Sensitive Method ◽  
Absorption Measurements

Electro-optic polymer modulator based on guided-wave resonance

2000 ◽  
Author(s):  
Yi Jiang ◽  
Zhuangqi Cao ◽  
Qishun Shen ◽  
Xiaoming Dou ◽  
Yingli Chen ◽  
...  
Keyword(s):  
Guided Wave ◽  
Wave Resonance ◽  
Electro Optic

Fast Pockels light modulator using guided wave resonance

1985 ◽  
Vol 24 (13) ◽  
pp. 2001 ◽  
Author(s):  
R. Reinisch ◽  
P. Vincent ◽  
M. Neviere ◽  
E. Pic
Keyword(s):  
Guided Wave ◽  
Light Modulator ◽  
Wave Resonance

scholarly journals Acoustic tweezing of microparticles in microchannels with sinusoidal cross sections

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Elnaz Attar Jannesar ◽  
Hossein Hamzehpour
Keyword(s):  
Cross Sections ◽  
Critical Size ◽  
Acoustic Radiation ◽  
Radiation Force ◽  
Acoustic Radiation Force ◽  
Biotechnological Applications ◽  
One Dimensional ◽  
Wave Resonance ◽  
Half Wave ◽  
Simulation Results

AbstractAcoustic tweezing of bioparticles has distinct advantages over other manipulation methods such as electrophoresis or magnetophoresis in biotechnological applications. This manipulation method guarantees the viability of the bio-particles during and after the process. In this paper, the effects of sinusoidal boundaries of a microchannel on acoustophoretic manipulation of microparticles are studied. Our results show that while top and bottom walls are vertically actuated at the horizontal half-wave resonance frequency, a large mono-vortex appears, which is never achievable in a rectangular geometry with flat walls and one-dimensional oscillations. The drag force caused by such a vortex in combination with the tilted acoustic radiation force leads to trapping and micromixing of microparticles with diameters larger and smaller than the critical size, respectively. Simulation results in this paper show that efficient particle trapping occurs at the intermediate sinusoidal boundary amplitudes. It is also indicated that in a square-sinusoidal geometry there are two strong vortices, instead of one vortex. Sub-micrometer particles tend to be trapped dramatically faster in such a geometry than in the rectangular-sinusoidal ones.

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