Coloring control by nanoscale surface coarseness
| Project/Area Number |
24656108
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Design engineering/Machine functional elements/Tribology
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KATO Takahisa 東京大学, 工学(系)研究科(研究院), 教授 (60152716)
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| Project Period (FY) |
2012-04-01 – 2013-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
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| Keywords | 金ナノ粒子 / スパッタリング / プラズモン / 吸収ピーク / 波長シフト / 色 |
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| Research Abstract |
A certain kind of nano size metal structures reveals a characteristic color. It is known that the gold particles of nano size present red color, and it is seldom known that they present other colors. In this study blue or green colored structure other than red were generated using a dry method by performing coloring control using nano level surface roughness. FE-SEM observation revealed the precise shape of nanostructure. The 3-dimensional calculation models were constructed from the FE-SEM observation. Plasmon absorption peaks were identified by carrying out optical measurements. Through the electromagnetic field calculation it was clarified that the plasmon peak wavelength of gold nano structure was determined by its size, shape and spacing. Finally the color of the nano structure can be expected generally. These results may enable the design of LSPR devices by controlling the characteristics of the nanostructures, such as their size, shape, number density and coverage.
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Report
(3 results)
Research Products
(5 results)
