High-Q Slow Sound Mode in a Phononic Fishbone Nanobeam Using an Acoustic Potential Well Cavity
Phononic crystals and phononic metamaterials are popular structures for manipulating acoustic waves with artificially arranged units that have different elastic constants. These structures are also used in acousto-optic coupling and optomechanical structures. In such research, a 1-D nanobeam contain...
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| Format: | Article |
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MDPI AG
2023-01-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/13/1/95 |
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| author | Ying-Pin Tsai Bor-Shyh Lin Fu-Li Hsiao |
| author_facet | Ying-Pin Tsai Bor-Shyh Lin Fu-Li Hsiao |
| author_sort | Ying-Pin Tsai |
| collection | DOAJ |
| description | Phononic crystals and phononic metamaterials are popular structures for manipulating acoustic waves with artificially arranged units that have different elastic constants. These structures are also used in acousto-optic coupling and optomechanical structures. In such research, a 1-D nanobeam containing a cavity region sandwiched by two mirror regions is one of the most common designs. However, searching bandgaps for suitable operation modes and the need for the mirror region are limitations in the device design. Therefore, we introduce the slow sound mode as the operating acoustic mode and use an acoustic potential well to further trap the phonons in the cavity. Three types of structures are introduced to investigate the effect of the potential well. The products of the mode frequencies and the quality factors of the modes are used to demonstrate the performance of the structures. The displacement field and the strain field show the concentrated slow sound modes of the potential wells and produce high quality factors. |
| first_indexed | 2024-03-09T13:07:09Z |
| format | Article |
| id | doaj.art-e58c5b111e904c0085872cfd00a6bd7b |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-09T13:07:09Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-e58c5b111e904c0085872cfd00a6bd7b2023-11-30T21:47:55ZengMDPI AGCrystals2073-43522023-01-011319510.3390/cryst13010095High-Q Slow Sound Mode in a Phononic Fishbone Nanobeam Using an Acoustic Potential Well CavityYing-Pin Tsai0Bor-Shyh Lin1Fu-Li Hsiao2Institute of Imaging and Biomedical Photonics, College of Photonics, National Yang Ming Chiao Tung University, Tainan 71150, TaiwanInstitute of Imaging and Biomedical Photonics, College of Photonics, National Yang Ming Chiao Tung University, Tainan 71150, TaiwanInstitute of Photonics, National Changhua University of Education, Changhua 50007, TaiwanPhononic crystals and phononic metamaterials are popular structures for manipulating acoustic waves with artificially arranged units that have different elastic constants. These structures are also used in acousto-optic coupling and optomechanical structures. In such research, a 1-D nanobeam containing a cavity region sandwiched by two mirror regions is one of the most common designs. However, searching bandgaps for suitable operation modes and the need for the mirror region are limitations in the device design. Therefore, we introduce the slow sound mode as the operating acoustic mode and use an acoustic potential well to further trap the phonons in the cavity. Three types of structures are introduced to investigate the effect of the potential well. The products of the mode frequencies and the quality factors of the modes are used to demonstrate the performance of the structures. The displacement field and the strain field show the concentrated slow sound modes of the potential wells and produce high quality factors.https://www.mdpi.com/2073-4352/13/1/95fishbone nanobeamacoustic potential wellphononic crystal |
| spellingShingle | Ying-Pin Tsai Bor-Shyh Lin Fu-Li Hsiao High-Q Slow Sound Mode in a Phononic Fishbone Nanobeam Using an Acoustic Potential Well Cavity Crystals fishbone nanobeam acoustic potential well phononic crystal |
| title | High-Q Slow Sound Mode in a Phononic Fishbone Nanobeam Using an Acoustic Potential Well Cavity |
| title_full | High-Q Slow Sound Mode in a Phononic Fishbone Nanobeam Using an Acoustic Potential Well Cavity |
| title_fullStr | High-Q Slow Sound Mode in a Phononic Fishbone Nanobeam Using an Acoustic Potential Well Cavity |
| title_full_unstemmed | High-Q Slow Sound Mode in a Phononic Fishbone Nanobeam Using an Acoustic Potential Well Cavity |
| title_short | High-Q Slow Sound Mode in a Phononic Fishbone Nanobeam Using an Acoustic Potential Well Cavity |
| title_sort | high q slow sound mode in a phononic fishbone nanobeam using an acoustic potential well cavity |
| topic | fishbone nanobeam acoustic potential well phononic crystal |
| url | https://www.mdpi.com/2073-4352/13/1/95 |
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