3D-Printed Gradient-Index Phononic Crystal Lens for Underwater Acoustic Wave Focusing

2020 ◽  
Vol 13 (6) ◽  
Author(s):  
Ahmed Allam ◽  
Karim Sabra ◽  
Alper Erturk
Keyword(s):  
Acoustic Wave ◽  
Phononic Crystal ◽  
Gradient Index ◽  
Wave Focusing ◽  
Underwater Acoustic ◽  
3D Printed

Gradient-index phononic crystals for omnidirectional acoustic wave focusing and energy harvesting

2020 ◽  
Vol 116 (23) ◽  
pp. 234101
Author(s):  
Jaeyub Hyun ◽  
Choon-Su Park ◽  
Jiho Chang ◽  
Wan-Ho Cho ◽  
Miso Kim
Keyword(s):  
Energy Harvesting ◽  
Acoustic Wave ◽  
Phononic Crystals ◽  
Gradient Index ◽  
Wave Focusing

Conformal gradient-index phononic crystal lens for ultrasonic wave focusing in pipe-like structures

2020 ◽  
Vol 117 (2) ◽  
pp. 021906
Author(s):  
Hrishikesh Danawe ◽  
Gorkem Okudan ◽  
Didem Ozevin ◽  
Serife Tol
Keyword(s):  
Ultrasonic Wave ◽  
Phononic Crystal ◽  
Gradient Index ◽  
Wave Focusing

Torsional wave focusing in cylindrical structures with the conformal gradient-index phononic crystal lens

2021 ◽  
Vol 129 (17) ◽  
pp. 174902
Author(s):  
Gorkem Okudan ◽  
Hrishikesh Danawe ◽  
Didem Ozevin ◽  
Serife Tol
Keyword(s):  
Phononic Crystal ◽  
Torsional Wave ◽  
Gradient Index ◽  
Wave Focusing ◽  
Cylindrical Structures

Highly directional acoustic wave radiation based on asymmetrical two-dimensional phononic crystal resonant cavity

2006 ◽  
Vol 88 (26) ◽  
pp. 263505 ◽  
Author(s):  
Manzhu Ke ◽  
Zhengyou Liu ◽  
Pei Pang ◽  
Wengang Wang ◽  
Zhigang Cheng ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Phononic Crystal ◽  
Resonant Cavity ◽  
Wave Radiation ◽  
Two Dimensional

Laser induced short plane acoustic wave focusing in water

2007 ◽  
Vol 91 (5) ◽  
pp. 051128 ◽  
Author(s):  
Seung H. Ko ◽  
Sang G. Ryu ◽  
Nipun Misra ◽  
Heng Pan ◽  
Costas P. Grigoropoulos ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Wave Focusing ◽  
Plane Acoustic Wave

Acoustic wave frequency filtering in constant total length phononic crystals of Al/Pb multilayer

2021 ◽  
Author(s):  
Chittaranjan Nayak ◽  
Mehdi Solaimani ◽  
Alireza Aghajamali ◽  
Arafa H. Aly
Keyword(s):  
Acoustic Wave ◽  
Phononic Crystal ◽  
Phononic Crystals ◽  
Geometrical Parameters ◽  
One Dimensional ◽  
Internal Geometry ◽  
Total Length ◽  
Acoustic Filters ◽  
System Length ◽  
Phononic Band Gaps

In this study, we have scrutinized the frequency gap generation by changing the geometrical parameters of a one-dimensional phononic crystal. For this purpose, we have calculated the transmission coefficient of an incident acoustic wave by using the transfer matrix method. We have retained and fixed the total length of the system and changed the system internal geometry not to increase the system length too much. Another reason was to adjust the phononic band gaps and get the desired transmission properties by finding the optimum internal geometry without increasing or decreasing the total length of phononic crystals. In addition, we also propose few structures with the opportunity of applications in acoustical devices such as sonic reflectors. Our results can also be of high interest to design acoustic filters in the case that transmission of certain frequencies is necessary.

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