Subwavelength and broadband tunable topological interface state for flexural wave in one-dimensional locally resonant phononic crystal

2020 ◽  
Vol 127 (23) ◽  
pp. 235106
Author(s):  
Lei Fan ◽  
Ye He ◽  
Xue Zhao ◽  
Xiao-an Chen
Keyword(s):  
Phononic Crystal ◽  
Interface State ◽  
Flexural Wave ◽  
One Dimensional

scholarly journals Flexural wave energy harvesting by the topological interface state of a phononic crystal beam

2021 ◽  
pp. 101578
Author(s):  
Tian-Xue Ma ◽  
Quan-Shui Fan ◽  
Chuanzeng Zhang ◽  
Yue-Sheng Wang
Keyword(s):  
Energy Harvesting ◽  
Wave Energy ◽  
Phononic Crystal ◽  
Interface State ◽  
Flexural Wave

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

Investigation of quasi-one-dimensional finite phononic crystal with conical section

Pramana ◽  
2014 ◽  
Vol 83 (6) ◽  
pp. 1003-1013
Author(s):  
ZHIQIANG FU ◽  
SHUYU LIN ◽  
SHI CHEN ◽  
XIAOJUN XIAN ◽  
CHENGHUI WANG
Keyword(s):  
Phononic Crystal ◽  
One Dimensional ◽  
Conical Section

scholarly journals One-dimensional broadband phononic crystal filter with unit cells made of two non-uniform impedance-mirrored elements

AIP Advances ◽  
2013 ◽  
Vol 3 (2) ◽  
pp. 022105 ◽  
Author(s):  
Il Kyu Lee ◽  
Yoon Jae Kim ◽  
Joo Hwan Oh ◽  
Yoon Young Kim
Keyword(s):  
Phononic Crystal ◽  
One Dimensional ◽  
Unit Cells

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.

PIEZOELECTRIC MATERIAL AND ONE-DIMENSIONAL PHONONIC CRYSTAL

2019 ◽  
Vol 26 (02) ◽  
pp. 1850144 ◽  
Author(s):  
ARAFA H. ALY ◽  
AHMED NAGATY ◽  
Z. KHALIFA
Keyword(s):  
Electric Field ◽  
Piezoelectric Material ◽  
Material Properties ◽  
Phononic Crystal ◽  
Defect Layer ◽  
Phononic Crystals ◽  
Localized Modes ◽  
One Dimensional ◽  
Energy Applications ◽  
Relative Change

We have theoretically obtained the transmittance properties of one-dimensional phononic crystals incorporating a piezoelectric material as a defect layer. We have used the transfer matrix method in our analysis with/without defect materials. By increasing the thickness of the defect layer, we obtained a sharp peak created within the bandgap, that indicates to the significance of defect layer thickness on the band structure. The localized modes and a particular intensity estimated within the bandgap depend on the piezoelectric material properties. By applying different quantities of an external electric field, the position of the peak shifts to different frequencies. The electric field induces a relative change in the piezoelectric thickness. Our structure may be very useful in some applications such as sensors, acoustic switches, and energy applications.

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