Nanofluidics device embedded with metamaterials: ultra-sensitive platform for IR absorption spectroscopy
| Project/Area Number |
15H06856
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Nano/Microsystems
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| Research Institution | Institute of Physical and Chemical Research |
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Principal Investigator |
Le ThuHacHuong 国立研究開発法人理化学研究所, 光量子工学研究領域, 国際特別研究員 (60752144)
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| Project Period (FY) |
2015-08-28 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 赤外分光 / マイクロ・ナノ流体デバイス / メタマテリアル / ラベルフリー検出 / ナノ流体 / ラベルフリー / マイクロナノ分析デバイス / 赤外分光法 / 光熱反射測定法 |
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| Outline of Final Research Achievements |
This study reports a nanofluidic device embedded with metamaterials for ultra-sensitive infrared (IR) absorption detection. Plasmonic nanostructures were intensively studied to improve the sensitivity of IR spectroscopy, yet positioning analytes at the hot-spot is a challenging issue. Here we proposed and fabricated a nanofluidic device consists of a metal (Au) square-disks array on the top wall of channel, and a metal mirror on the bottom. The nanochannel with several tens of nms in depth plays the role of dielectric spacer layer, in which the photons are accumulated and the electromagnetic field is significantly enhanced. When the analyte whose IR absorption is spectrally overlapped with this mode is introduced, its strong coupling with this plasmon mode induces a significant amplification in molecular absorption signal. This device offered an improvement of sensitivity by two orders of magnitude compared to state-of-the-art metamaterials induced IR spectroscopies.
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Report
(3 results)
Research Products
(8 results)
