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Wave-canceling acoustic metarod architected with single material building blocks
| Title: | Wave-canceling acoustic metarod architected with single material building blocks |
| Authors: | Ogasawara, Akira Browse this author | | Fujita, Kentaro Browse this author | | Tomoda, Motonobu Browse this author →KAKEN DB | | Matsuda, Osamu Browse this author →KAKEN DB | | Wright, Oliver B. Browse this author →KAKEN DB |
| Issue Date: | 15-Jun-2020 |
| Publisher: | American Institute of Physics (AIP) |
| Journal Title: | Applied physics letters |
| Volume: | 116 |
| Issue: | 24 |
| Start Page: | 241904 |
| Publisher DOI: | 10.1063/5.0011319 |
| Abstract: | Preventing elastic waves from traveling down thin structures is a subject of great interest from the point of view of both physics and applications. It represents a problem-mirrored by the case of light in waveguides-that has broad implications. To completely prohibit sound waves in a given frequency range in rods, for example, all axially propagating acoustic eigenmodes must exhibit strong damping. Here, we demonstrate experimentally and by simulation a metamaterial rod made from a single material that can simultaneously shut out all elastic-wave polarizations, namely longitudinal, flexural, and torsional modes, in a band in the sub-kHz range. We first bond five acrylic building blocks together to make a subwavelength resonator and then fix an array of these inside an acrylic tube to form a cylindrical metarod that inhibits sound transmission in the metamaterial bandgap frequency range. Applications include vibration control and earthquake mitigation. |
| Rights: | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 116, 241904 (2020), and may be found at https://doi.org/10.1063/5.0011319. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/81887 |
| 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: WRIGHT O. B.
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