2013 Fiscal Year Final Research Report
Optical properties of gold nano-square plates synthesized in dynamic phase separating media of 2-butoxyethanol water
| Project/Area Number |
23710117
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Nanomaterials/Nanobioscience
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| Research Institution | Tohoku University |
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Principal Investigator |
KAJIMOTO Shinji 東北大学, 理学(系)研究科(研究院), 助教 (80463769)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 金ナノ構造体 / レーザー合成 / 相分離 / 反応場 |
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| Research Abstract |
The formation and growth mechanism and the optical property of gold nano-square plates synthesized via laser-induced photo-reduction gold ions in dynamic phase separating media were investigated. Phase separation was initiated by a nanosecond IR pulse, and after certain delay time, a UV pulse was introduced to induce photo-reduction in phase separating media, leading the formation of gold nanostructures. Based on the irradiation time and delay time dependence of the size distribution of gold nano-square plates synthesized, we concluded that the growth process of nano-squares by repetitive irradiation of IR and UV pulses was governed by the size of nanophases during phase separation. Optical properties of gold nano-square plates were also investigated. By taking SEM images, dark field images and scattering spectra of the same nanostructures, the size and orientation dependence of optical property was determined.
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