Plasmon-resonant optics for exciting a two photon photochromic reaction or photoluminescence
| Project/Area Number |
24656040
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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 |
Thin film/Surface and interfacial physical properties
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
MIKI Kazushi 独立行政法人物質・材料研究機構, 高分子材料ユニット, グループリーダー (30354335)
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| Co-Investigator(Kenkyū-buntansha) |
ISOZAKI Katsuhiro 京都大学, 化学研究所, 助教 (30455274)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 金属ナノ粒子 / プラズモニクス / 近接場光 / 透明電極 / 非線形光学効果 / 金ナノ粒子 / コアシェル粒子 / 近接場 / 光化学 / 流体デバイス / プラズモン |
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| Outline of Final Research Achievements |
Two-dimensional arrays of gold nanoparticles (AuNPs) as localized surface plasmon-resonant (LSPR) optics on a transparent conductive layer of indium-tin-oxide (ITO) were successfully fabricated. By adjusting the LSPR wavelength to 905 nm at peak, two photon photochromic reaction of diarylethene derivative in solution phase was demonstrated with irradiation by an incoherent near-infrared light in the range of 0.017-0.033 W/cm-square instead of a laser, thanks to the AuNP two-dimensional array. Then a series of two-dimensional (2D) arrays of Au-core/Ag-shell nanoparticles with fixed sub-3 nm gap distance was obtained on the ITO substrates. The resulting SERS substrates enhanced Raman signal by up to about 10 to the power of 7 with remarkable spatial uniformity. Our SERS substrate is highly promising as a practical optical devices such as SERS-based sensor substrate or photochemical devices.
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Report
(4 results)
Research Products
(34 results)
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[Journal Article] Square-centimeter-scale 2D-arrays of Au@Ag core-shell nanoparticles towards practical SERS substrates with enhancement factor of 10^72014
Author(s)
Francesca Pincella, Yeji Song, Takao Ochiai, Katsuhiro Isozaki, Kenji Sakamoto, and Kazushi Miki
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Journal Title
Francesca Pincella, Yeji Song, Takao Ochiai, Katsuhiro Isozaki, Kenji Sakamoto, and Kazushi Miki
Volume: 605-606
Pages: 115-120
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Presentation] Surface Enhanced Raman Spectroscopy (SERS) Substrate towards bio-sensor for detecting serious diseases in Southeast Asia2014
Author(s)
Kazushi Miki, Karn-Orachai Kullavadee, Kenji Sakamoto, Koh-ichi Nittoh, .Satoko Nishiyama, Sayaka Yanagida,, Rawiwan Laocharoensuk, Suwussa Bamrungsap, Tararaj Dharakul, Sirirurg Songsivilai, Thi Dieu Thuy Ung, Thi Kim Chi Tran, and Liem Quang Nguyen
Organizer
The 7th International Workshop on ADVANCED MATERIALS SCIENCE AND NANOTECHNOLOGY
Place of Presentation
ベトナム、ハロン湾市
Year and Date
2014-11-05
Related Report
Invited
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