Development of Single Particle Potential-Scanning Plasmonic Sensors toward Three-Dimensional Mapping
| Project/Area Number |
16K14017
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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 |
Analytical chemistry
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Tatsuma Tetsu 東京大学, 生産技術研究所, 教授 (90242247)
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| Co-Investigator(Renkei-kenkyūsha) |
NISHI Hiroyasu 東京大学, 生産技術研究所, 助教 (70714137)
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| Research Collaborator |
KAWAWAKI Tokuhisa
SAITO Koichiro
WU Ling
AKIYOSHI Kazutaka
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 局在表面プラズモン共鳴 / 金属ナノ粒子 / 化学センサ / 2次元マッピング / プラズモニクス / プラズモン共鳴 / ナノ材料 / 先端機能デバイス |
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| Outline of Final Research Achievements |
Gold nanorods were immobilized on a transparent electrode and a scattering spectrum was obtained from each nanorod by dark-field microspectroscopy. The potential of the electrode was scanned so that potential-scanning scattering spectrum was obtained at a specific wavelength. The peak potential was negatively shifted as the local refractive index increased. A single plasmonic nanoparticle can therefore be employed for affinity sensing and two-dimensional mapping should also be possible by using a nanoparticle ensemble. Gold nanorod dimers exhibited higher refractive index sensitivities than single nanorods in both potential-scanning and conventional wavelength-scanning based plasmon sensing. We also prepared plasmonic nanoparticle arrays on a transparent electrode by a lithographic method.
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Report
(3 results)
Research Products
(25 results)
