Temperature tuning of defect state induced by the periodic cavities between the phononic crystals
The defect state in periodic structures usually leads to a pass band in the forbidden bandgap and energy localization at the position of geometric change. In this paper, we have introduced periodic cavities into a symmetric structure composing of two separated phononic crystals to construct the defe...
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doaj-952a3f3bf4504b7290125992514e2a762021-08-04T13:18:51ZengAIP Publishing LLCAIP Advances2158-32262021-07-01117075113075113-710.1063/5.0053094Temperature tuning of defect state induced by the periodic cavities between the phononic crystalsHuan Liu0Ting Liu1Le Song2Qiao-Mu Zhang3Ya-Xian Fan4Zhi-Yong Tao5Key Laboratory of In-fiber Integrated Optics Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, People’s Republic of ChinaKey Laboratory of In-fiber Integrated Optics Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, People’s Republic of ChinaGuangxi Key Laboratory of Wireless Wideband Communication and Signal Processing, Guilin University of Electronic Technology, Guilin 541004, People’s Republic of ChinaGuangxi Key Laboratory of Wireless Wideband Communication and Signal Processing, Guilin University of Electronic Technology, Guilin 541004, People’s Republic of ChinaGuangxi Key Laboratory of Wireless Wideband Communication and Signal Processing, Guilin University of Electronic Technology, Guilin 541004, People’s Republic of ChinaGuangxi Key Laboratory of Wireless Wideband Communication and Signal Processing, Guilin University of Electronic Technology, Guilin 541004, People’s Republic of ChinaThe defect state in periodic structures usually leads to a pass band in the forbidden bandgap and energy localization at the position of geometric change. In this paper, we have introduced periodic cavities into a symmetric structure composing of two separated phononic crystals to construct the defect state in the forbidden band and realize the temperature tuning of the defect state. The proposed structure is composed of two mirror-symmetric phononic crystals, with triangular steel arrays embedded in water. These two phononic crystals have opposite rotation angles possessing different topological properties, and the relative position of them leads to a forbidden band for the underwater ultrasonic waves. Interestingly, the periodic cavities between the boundaries of the phononic crystals result in a peak in the forbidden bandgap, which behaves as energy localization inside the cavities. The simulated results reflect the spectral and spatial characteristics of the defect state of this structure and exhibit the temperature tuning of the mentioned defect state. The designed structure provides a valid platform to filter the ultrasonic waves in fluid via controlling temperature, and the defect state manipulations benefit the smart structures of wave propagation, such as acoustic switches and underwater sound waveguides.http://dx.doi.org/10.1063/5.0053094 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Huan Liu Ting Liu Le Song Qiao-Mu Zhang Ya-Xian Fan Zhi-Yong Tao |
spellingShingle |
Huan Liu Ting Liu Le Song Qiao-Mu Zhang Ya-Xian Fan Zhi-Yong Tao Temperature tuning of defect state induced by the periodic cavities between the phononic crystals AIP Advances |
author_facet |
Huan Liu Ting Liu Le Song Qiao-Mu Zhang Ya-Xian Fan Zhi-Yong Tao |
author_sort |
Huan Liu |
title |
Temperature tuning of defect state induced by the periodic cavities between the phononic crystals |
title_short |
Temperature tuning of defect state induced by the periodic cavities between the phononic crystals |
title_full |
Temperature tuning of defect state induced by the periodic cavities between the phononic crystals |
title_fullStr |
Temperature tuning of defect state induced by the periodic cavities between the phononic crystals |
title_full_unstemmed |
Temperature tuning of defect state induced by the periodic cavities between the phononic crystals |
title_sort |
temperature tuning of defect state induced by the periodic cavities between the phononic crystals |
publisher |
AIP Publishing LLC |
series |
AIP Advances |
issn |
2158-3226 |
publishDate |
2021-07-01 |
description |
The defect state in periodic structures usually leads to a pass band in the forbidden bandgap and energy localization at the position of geometric change. In this paper, we have introduced periodic cavities into a symmetric structure composing of two separated phononic crystals to construct the defect state in the forbidden band and realize the temperature tuning of the defect state. The proposed structure is composed of two mirror-symmetric phononic crystals, with triangular steel arrays embedded in water. These two phononic crystals have opposite rotation angles possessing different topological properties, and the relative position of them leads to a forbidden band for the underwater ultrasonic waves. Interestingly, the periodic cavities between the boundaries of the phononic crystals result in a peak in the forbidden bandgap, which behaves as energy localization inside the cavities. The simulated results reflect the spectral and spatial characteristics of the defect state of this structure and exhibit the temperature tuning of the mentioned defect state. The designed structure provides a valid platform to filter the ultrasonic waves in fluid via controlling temperature, and the defect state manipulations benefit the smart structures of wave propagation, such as acoustic switches and underwater sound waveguides. |
url |
http://dx.doi.org/10.1063/5.0053094 |
work_keys_str_mv |
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