Elastic filter based on coupled resonator waveguides in phononic crystal slabs

2010 ◽  
Author(s):  
Abdelkrim Khelif ◽  
Saeed Mohammadi ◽  
Ali Eftekhar ◽  
Ali Adibi ◽  
Boujemaa Aoubiza
Keyword(s):  
Phononic Crystal ◽  
Coupled Resonator

scholarly journals All-acoustic signal modulation and logic operation via defect induced cavity effects in phononic crystal coupled-resonator acoustic waveguides

2019 ◽  
Vol 21 (11) ◽  
pp. 113012
Author(s):  
Delfino Reyes ◽  
Ezekiel Walker ◽  
Yurii Zubov ◽  
Hyeonu Heo ◽  
Arkadii Krokhin ◽  
...  
Keyword(s):  
Acoustic Signal ◽  
Phononic Crystal ◽  
Signal Modulation ◽  
Logic Operation ◽  
Acoustic Waveguides ◽  
Cavity Effects ◽  
Coupled Resonator

scholarly journals Phononic Coupled-Resonator Waveguide Micro-Cavities

2020 ◽  
Vol 10 (19) ◽  
pp. 6751
Author(s):  
Ting-Ting Wang ◽  
Sylwester Bargiel ◽  
Franck Lardet-Vieudrin ◽  
Yan-Feng Wang ◽  
Yue-Sheng Wang ◽  
...  
Keyword(s):  
Elastic Waves ◽  
Phononic Crystal ◽  
Resonant Cavity ◽  
Fused Silica ◽  
Dynamical Response ◽  
Weakly Coupled ◽  
Cavity Modes ◽  
Waveguide Cavities ◽  
Complete Bandgap ◽  
Coupled Resonator

Phononic coupled-resonator waveguide cavities are formed by a finite chain of defects in a complete bandgap phononic crystal slab. The sample is machined in a fused silica plate by femtosecond printing to form an array of cross-shape holes. The collective resonance of the phononic cavities, in the Megahertz frequency range, are excited by a piezoelectric vibrator and imaged by laser Doppler vibrometry. It is found that well-defined resonant cavity modes can be efficiently excited, even though the phononic cavities are distant by a few lattice spacings and are only weakly coupled through evanescent elastic waves. The results suggest the possibility of engineering the dynamical response of a set of coupled phononic cavities by an adequate layout of defects in a phononic crystal slab.

Phononic-Crystal Acoustic Lens by Design for Energy-Transmission Devices

2012 ◽  
Vol 132 (5) ◽  
pp. 686-690
Author(s):  
Yusuke Kanno ◽  
Kenji Tsuruta ◽  
Kazuhiro Fujimori ◽  
Hideki Fukano ◽  
Shigeji Nogi
Keyword(s):  
Phononic Crystal ◽  
Energy Transmission ◽  
Acoustic Lens

Flexural Wave Band Gaps in Phononic Crystal Thick Plates with Defects

2019 ◽  
Author(s):  
Edson Jansen Pedrosa de Miranda Junior ◽  
Jose Maria Campos dos Santos
Keyword(s):  
Phononic Crystal ◽  
Band Gaps ◽  
Flexural Wave ◽  
Wave Band ◽  
Thick Plates

scholarly journals Tunable characteristics of low-frequency bandgaps in two-dimensional multivibrator phononic crystal plates under prestrain

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hai-Fei Zhu ◽  
Xiao-Wei Sun ◽  
Ting Song ◽  
Xiao-Dong Wen ◽  
Xi-Xuan Liu ◽  
...  
Keyword(s):  
Phononic Crystal ◽  
Real Life ◽  
Low Frequency ◽  
Acoustic Vibration ◽  
Crystal Plate ◽  
Frequency Noise ◽  
Two Dimensional ◽  
The Matrix ◽  
Noise Frequency ◽  
Realtime Control

AbstractIn view of the influence of variability of low-frequency noise frequency on noise prevention in real life, we present a novel two-dimensional tunable phononic crystal plate which is consisted of lead columns deposited in a silicone rubber plate with periodic holes and calculate its bandgap characteristics by finite element method. The low-frequency bandgap mechanism of the designed model is discussed simultaneously. Accordingly, the influence of geometric parameters of the phononic crystal plate on the bandgap characteristics is analyzed and the bandgap adjustability under prestretch strain is further studied. Results show that the new designed phononic crystal plate has lower bandgap starting frequency and wider bandwidth than the traditional single-sided structure, which is due to the coupling between the resonance mode of the scatterer and the long traveling wave in the matrix with the introduction of periodic holes. Applying prestretch strain to the matrix can realize active realtime control of low-frequency bandgap under slight deformation and broaden the low-frequency bandgap, which can be explained as the multiple bands tend to be flattened due to the localization degree of unit cell vibration increases with the rise of prestrain. The presented structure improves the realtime adjustability of sound isolation and vibration reduction frequency for phononic crystal in complex acoustic vibration environments.

A tunable phononic crystal system for elastic ultrasonic wave control

2021 ◽  
Vol 118 (22) ◽  
pp. 224104
Author(s):  
Yihao Song ◽  
Yanfeng Shen
Keyword(s):  
Ultrasonic Wave ◽  
Phononic Crystal ◽  
Crystal System ◽  
Wave Control

Transition between coupled-resonator-induced transparency and absorption

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
Shu-Ting Guo ◽  
Yu-Hong Zhang ◽  
Liu-Le Wu ◽  
Ming-Yong Ye ◽  
Xiu-Min Lin
Keyword(s):  
Induced Transparency ◽  
Coupled Resonator
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