| Project/Area Number |
25246030
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
General applied physics
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| Research Institution | Hokkaido University |
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Principal Investigator |
Wright Oliver 北海道大学, 工学(系)研究科(研究院), 教授 (90281790)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUDA Osamu 北海道大学, 大学院工学研究院, 准教授 (30239024)
TOMODA Motonobu 北海道大学, 大学院工学研究院, 助教 (30344485)
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| Research Collaborator |
Otsuka Paul 北海道大学, 大学院工学研究院, 研究員
Mezil Sylvain 北海道大学, 大学院工学研究院, 研究院
Gusev Vitali Maine University, 教授
Lee Sam Hyeon Yonsei University, 教授
Kuipers L. Kobus FOM-institute AMOLF, 教授
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| Project Period (FY) |
2013-10-21 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥43,550,000 (Direct Cost: ¥33,500,000、Indirect Cost: ¥10,050,000)
Fiscal Year 2015: ¥11,830,000 (Direct Cost: ¥9,100,000、Indirect Cost: ¥2,730,000)
Fiscal Year 2014: ¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000)
Fiscal Year 2013: ¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000)
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| Keywords | 音響メタマテリアル / ピコ秒超音波 / フォノン / 異常透過 / 負の質量密度 / 負の弾性率 / イメージング / 音響顕微鏡 / レーザー / ピコ秒 / 超音波 / 超高速 / ナノ構造 / メタマテリアル / 音 / 超高速フォノン物性 / プラズモニクス / Double-Negative材料 / スプリットリング共振器 |
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| Outline of Final Research Achievements |
We investigate gigahertz acoustic metamaterials, extending them to the nanoscale and thus facilitating the development of new nanoscale acoustic microscopies. The aim is to optically generate coherent phonons with frequencies ~1-100 GHz and wavelengths down to ~100 nm in nano-metamaterials to control bulk and surface acoustic waves on very short temporal (~1 ps) and spatial (~20-50 nm) scales. Applications include solid-state super-lensing, extraordinary transmission, negative refraction, surface acoustic wave cloaking, metamaterial resonators and hybrid opto-mechanical materials. We concentrate on three main topics: 1. Design of GHz acoustic metamaterials, 2. GHz extraordinary transmission, metamaterial resonators, and deep-sub-wavelength focusing, 3. Hybrid GHz opto-mechanical metamaterials. During the course of this work a number of supplementary applications were conceived at lower frequencies.
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