2015 Fiscal Year Final Research Report
Nano-imaging of plasmomically enhanced fields
| Project/Area Number |
25390096
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Optical engineering, Photon science
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | アゾ系ポリマー / 光異性化 / 光誘起物質移動 / 光誘起異方流動性 / 光勾配力 / プラズモニクス / 増強電場 / 局在電場 |
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| Outline of Final Research Achievements |
Plasmonically enhanced near-field distributions in the vicinity of metal nano structures were mapped by utilizing light-induced polymer movement of azo-polymers. As a metal nano structure, single gold nano particle and silver nano tip (square pyramid) were used. By obtaining AFM images of polymer surfaces after light irradiation, light intensity distributions and polarization states of plasmonically enhanced near-fields were inferred. Since the inferred field distributions were good agreement with field distributions calculated by a finite-difference time-domain method, the validity of the proposed method was verified. Moreover, polymers were moved by anisotropic photo-fluidic force and optical gradient force in the direction parallel and perpendicular to the film surface, respectively.
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| Free Research Field |
分子ナノフォトニクス
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