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A tunable acoustic filter using disordered systems
| Title: | A tunable acoustic filter using disordered systems |
| Authors: | Nishiguchi, Norihiko Browse this author →KAKEN DB | | Yoshihiro, Tatsuya Browse this author |
| Issue Date: | 18-Jun-2021 |
| Publisher: | IOP Publishing |
| Journal Title: | Japanese Journal of Applied Physics |
| Volume: | 60 |
| Issue: | 7 |
| Start Page: | 072004 |
| Publisher DOI: | 10.35848/1347-4065/ac06b6 |
| Abstract: | We propose a tunable acoustic filter using superlattices constructed by random stacking of solid and fluid layers. Acoustic waves are localized in the random superlattices (RSLs) and the transmission rates substantially decay to 0 except for the resonance transmissions where the acoustic waves are delocalized. The transmission rates become unity for the resonance transmissions. The resonance frequencies depend on the layer thicknesses, and we can modulate the transmission spectra from transparent to opaque, and vice versa, modifying the layer thicknesses. We numerically illustrate the changes in the transport properties for the aluminum/water RSLs, and suggest to exploit the RSLs for the tunable acoustic filters. |
| Rights: | © [2021] The Japan Society of Applied Physics |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/85953 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 西口 規彦
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