| Presentation | 2005/1/14 Optical Nonlinearities of Metal Nanoparticles with Various Shapes and Sizes Arao NAKAMURA, Yasushi HAMANAKA, Noriyuki OKADA, Kazuhiro FUKUTA, Yutaka TAI, Junichi MURAKAMI, Luis M. LIZ-MARZAN, Paul MULVANEY, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have investigated linear and nonlinear optical response of metal nanoparticles with various shapes and sizes. For silica-capped Au nanoparticles, the imaginary part of χ^<(3)> (Imχ^<(3)>) around surface plasmon resonance increases with incrasing volume fraction p of nanoparticles up to 0.34. In addition to the local field enhancement, additional enhancement of Imχ^<(3)> due to the interaction between nanoparticles is observed. In Ag nanoprisms with the edge length of 67 nm and thickness of 35 nm, dipole and quadrupole plasmon resonance bands have been observed in absorption spectra. The local field factors f_Q and f_D of quadrupole and dipole plasmon resonacnes have been obtained from the values of absorption coefficient and Imχ^<(3)>. The ratio f_Q/f_D is found to be 0.7. We have also investigated optical response of Au clusters with 28 to 148 atoms. For clusters with 28 and 48 atoms optical transitions due to quantized levels of sp bands are observed. We have found that Imχ^<(3)> shows resonance enhancement at the optical transitions due to quantized levels and the value of Imχ^<(3)> is comparable to that of Au nanoparticles with a size of 15 nm. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Surface plasmon / Quantum size effect / Nonlinear optical properties / Photonics |
| Paper # | OME2004-111 |
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| Committee | OME |
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| Conference Date | 2005/1/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Organic Material Electronics (OME) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Optical Nonlinearities of Metal Nanoparticles with Various Shapes and Sizes |
| Sub Title (in English) | |
| Keyword(1) | Surface plasmon |
| Keyword(2) | Quantum size effect |
| Keyword(3) | Nonlinear optical properties |
| Keyword(4) | Photonics |
| 1st Author's Name | Arao NAKAMURA |
| 1st Author's Affiliation | School of Engineering, Nagoya University and CREST-JST() |
| 2nd Author's Name | Yasushi HAMANAKA |
| 2nd Author's Affiliation | Faculty of Engineering, Nagoya Institute of Technology |
| 3rd Author's Name | Noriyuki OKADA |
| 3rd Author's Affiliation | School of Engineering, Nagoya University and CREST-JST |
| 4th Author's Name | Kazuhiro FUKUTA |
| 4th Author's Affiliation | School of Engineering, Nagoya University and CREST-JST |
| 5th Author's Name | Yutaka TAI |
| 5th Author's Affiliation | Chubu Research Base, National Research Institute of Advanced Industrial Science and Technology |
| 6th Author's Name | Junichi MURAKAMI |
| 6th Author's Affiliation | Chubu Research Base, National Research Institute of Advanced Industrial Science and Technology |
| 7th Author's Name | Luis M. LIZ-MARZAN |
| 7th Author's Affiliation | University of Vigo |
| 8th Author's Name | Paul MULVANEY |
| 8th Author's Affiliation | University of Melbourne |
| Date | 2005/1/14 |
| Paper # | OME2004-111 |
| Volume (vol) | vol.104 |
| Number (no) | 578 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |