Ultra-wideband valley transmission on elastic topological phononic crystals
The Valley Hall effect and topological chiral boundary states play a crucial role in investigating elastic wave transmission properties. In this study, to construct the phononic crystal plate structure, periodic scatterer structures are arranged on the bottom plate at a certain thickness. Simulation...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Results in Physics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379723003637 |
| _version_ | 1797802249028632576 |
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| author | Chengxin Cai Guangchen He Zhoufu Zheng Yao Qin Jianfei Yin |
| author_facet | Chengxin Cai Guangchen He Zhoufu Zheng Yao Qin Jianfei Yin |
| author_sort | Chengxin Cai |
| collection | DOAJ |
| description | The Valley Hall effect and topological chiral boundary states play a crucial role in investigating elastic wave transmission properties. In this study, to construct the phononic crystal plate structure, periodic scatterer structures are arranged on the bottom plate at a certain thickness. Simulation analysis reveal that modulating the edge states of the designed elastic phononic crystal plate achieves greater degrees of freedom and enhanced backscattering suppression capabilities. Straight boundary, right-angle turning boundary, and valley topological transport with defect and disordered boundary are achieved by utilizing edge states. Experimental validation confirm the robustness against immunodeficiency and holes. The relative width of the topological band gap in the elastic wave system examined in this study exceeds 60%, offering significant advantages and potential for practical applications. This research contributes new insights for engineering applications of ultra-wideband acoustic antennas, acoustic logic control, and other devices. |
| first_indexed | 2024-03-13T05:03:05Z |
| format | Article |
| id | doaj.art-8b9fe86ea95c4760a6e4e29673d950e0 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-03-13T05:03:05Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-8b9fe86ea95c4760a6e4e29673d950e02023-06-17T05:18:11ZengElsevierResults in Physics2211-37972023-07-0150106570Ultra-wideband valley transmission on elastic topological phononic crystalsChengxin Cai0Guangchen He1Zhoufu Zheng2Yao Qin3Jianfei Yin4Key Laboratory of Grain Information Processing and Control (Henan University of Technology), Ministry of Education, Zhengzhou 450001, China; Henan Key Laboratory of Grain Photoelectric Detection and Control, Henan University of Technology, Zhengzhou 450001, China; College of Information Science and Engineering, Henan University of Technology, Zhengzhou 450001, China; Corresponding authors.College of Information Science and Engineering, Henan University of Technology, Zhengzhou 450001, ChinaCollege of Intelligent Science, National University of Defense Technology, Changsha 410000, ChinaKey Laboratory of Grain Information Processing and Control (Henan University of Technology), Ministry of Education, Zhengzhou 450001, China; Henan Key Laboratory of Grain Photoelectric Detection and Control, Henan University of Technology, Zhengzhou 450001, China; College of Information Science and Engineering, Henan University of Technology, Zhengzhou 450001, ChinaCollege of Intelligent Science, National University of Defense Technology, Changsha 410000, China; Corresponding authors.The Valley Hall effect and topological chiral boundary states play a crucial role in investigating elastic wave transmission properties. In this study, to construct the phononic crystal plate structure, periodic scatterer structures are arranged on the bottom plate at a certain thickness. Simulation analysis reveal that modulating the edge states of the designed elastic phononic crystal plate achieves greater degrees of freedom and enhanced backscattering suppression capabilities. Straight boundary, right-angle turning boundary, and valley topological transport with defect and disordered boundary are achieved by utilizing edge states. Experimental validation confirm the robustness against immunodeficiency and holes. The relative width of the topological band gap in the elastic wave system examined in this study exceeds 60%, offering significant advantages and potential for practical applications. This research contributes new insights for engineering applications of ultra-wideband acoustic antennas, acoustic logic control, and other devices.http://www.sciencedirect.com/science/article/pii/S2211379723003637Phononic crystalElastic topologyValley transportUltra-widebandImmune defects |
| spellingShingle | Chengxin Cai Guangchen He Zhoufu Zheng Yao Qin Jianfei Yin Ultra-wideband valley transmission on elastic topological phononic crystals Results in Physics Phononic crystal Elastic topology Valley transport Ultra-wideband Immune defects |
| title | Ultra-wideband valley transmission on elastic topological phononic crystals |
| title_full | Ultra-wideband valley transmission on elastic topological phononic crystals |
| title_fullStr | Ultra-wideband valley transmission on elastic topological phononic crystals |
| title_full_unstemmed | Ultra-wideband valley transmission on elastic topological phononic crystals |
| title_short | Ultra-wideband valley transmission on elastic topological phononic crystals |
| title_sort | ultra wideband valley transmission on elastic topological phononic crystals |
| topic | Phononic crystal Elastic topology Valley transport Ultra-wideband Immune defects |
| url | http://www.sciencedirect.com/science/article/pii/S2211379723003637 |
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