2016 Fiscal Year Research-status Report
Novel photon control by moire superlattices and plasmonic metasurfaces
| Project/Area Number |
16K21601
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
Chen Kai 国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, NIMSポスドク研究員 (40748547)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | colloidal lithography / nanoantenna / plasmon / infrared spectroscopy / ITO nanorod |
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| Outline of Annual Research Achievements |
I have fabricated and characterized various plasmonic metasurfaces to achieve better photon control as proposed. Using colloidal lithography, I fabricated large-area Al nanoantennas with tunable plasmon resonances in a wide wavelength range. Further accurate resonance wavelength tuning was demonstrated by post-fabrication etching, which also provides more accessible enhanced near-fields and sensing volumes leading to better molecular sensitivity.The results were published in Scientific Reports.
I also have collaborated with researchers from Northwestern University and demonstrated infrared spectroscopic biosensing with single-crystal ITO nanorod arrays. This work demonstrated the great potential of ITO as alternative plasmonic materials.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
Overall the project goes well. The original goal of the proposal was to achieve better photon control with moire superlattices and plasmonic metasurfaces. With this in mind, I modified the research content and plan a bit and proposed more efficient nanostructures:Al nanoantennas and ITO nanorods. Two journal papers have already been published in this project and the results were also presented in various domestic and international conferences. I will perform the rest proposal including the moire superlattices in the 2nd year of this project and I believe I will be able to finish this project on time and achieve the research goals.
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| Strategy for Future Research Activity |
I have slightly modified the research content in order to achieve better results. This does not affect the original goal of this proposal - to achieve better photon control on the nanoscale for efficient light-matter interactions. I only chose to study different nanostructure with better performance. The nanostructures are also fabricated using the same techniques in the original proposal. I will continue to fabricate more efficient nanostructures with novel plasmonic materials. I will use these nanostructures to control photon-molecule interactions in the infrared for better sensors.
I will also fabricate the moire superlattices as detailed in the original proposal and investigate their applications for infrared sensing.
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