Subwavelength acoustic imaging using kHz-GHz extraordinary transmission
| Project/Area Number |
16F16786
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Single-year Grants |
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| Section | 外国 |
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| Research Field |
Applied materials
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| Research Institution | Hokkaido University |
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Principal Investigator |
O・B Wright 北海道大学, 工学研究院, 教授 (90281790)
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| Co-Investigator(Kenkyū-buntansha) |
DEVAUX THIBAUT 北海道大学, 工学(系)研究科(研究院), 外国人特別研究員
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| Project Period (FY) |
2016-11-07 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2018: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2017: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2016: ¥600,000 (Direct Cost: ¥600,000)
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| Keywords | extraordinary / transmission / metamaterial / audio / ultrasonics / sound |
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| Outline of Annual Research Achievements |
We have demonstrated an Extraordinary-Transmission (ET)-based scanning acoustic microscope based on membrane resonance (MR) in the audio (up to 20 kHz) range (wavelength ~1-10 mm) with deeply sub-wavelength (<lamba/30) resolution. The microscope has a plastic membrane of diameter around 1 cm working at around 1000 Hz. We confirmed operation for topography measurement up to 15 mm distance. Linear scans were made of several materials to confirm lambda/20 resolution. We have developed a new analytical model of this system and are preparing a journal publication of the results at the present time.
We have also done simulations on GHz ET of longitudinal waves in nanoscale silicon bridges and confirmed the principle works with grooves at the input side. We have calculated the transmission efficiency to be a maximum of 250, a world record. A journal paper has been written and we are on the final check stage, ready for submission in around 2-3 weeks.
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| Research Progress Status |
平成30年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
平成30年度が最終年度であるため、記入しない。
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Report
(3 results)
Research Products
(15 results)
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[Presentation] Extraordinary transmission of GHz bulk acoustic waves2017
Author(s)
T. Devaux, H. Tozawa, M. Tomoda, P. H. Otsuka, S. Mezil, O. Matsuda, I. A. Veres, and O. B. Wright
Organizer
META’17, the 8th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Incheon, Korea
Related Report
Int'l Joint Research
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