High-sensitive ultrasonic sensor using phononic crystal
| Project/Area Number |
26630147
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Research Collaborator |
KIM INGI 東京大学, 大学院工学系研究科電気工学専攻
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | フォノニック結晶 / 共振器 / 光弾性効果 / 弾性波 / センサ / 音響共振器 / Q値 |
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| Outline of Final Research Achievements |
We numerically investigated quasi-one-dimensional phononic crystal made of quartz glass and found that the structure can support a high Q cavity mode for quasi-longitudinal elastic wave within the large complete phononic band gap. By utilizing the strong confinement of the elastic wave in the cavity, we experimentally demonstrated the photoelastic effect is greatly enhanced when the incident elastic wave resonates with the cavity mode frequency in the sample made by ultrasonic machining processing. This result indicates that there is a possibility that high sensitivity detection of weak ultrasonic (elastic) wave can be realized by using phononic crystal cavities.
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Report
(4 results)
Research Products
(14 results)
