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Akifumi Ikehata
Researcher at National Agriculture and Food Research Organization
Publications - 79
Citations - 1223
Akifumi Ikehata is an academic researcher from National Agriculture and Food Research Organization. The author has contributed to research in topics: Spectroscopy & Surface plasmon resonance. The author has an hindex of 20, co-authored 73 publications receiving 1060 citations. Previous affiliations of Akifumi Ikehata include Kwansei Gakuin University.
Papers
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Surface-enhanced resonance Raman scattering and background light emission coupled with plasmon of single Ag nanoaggregates
Tamitake Itoh,Vasudevanpillai Biju,Mitsuru Ishikawa,Yasuo Kikkawa,Kazuhiro Hashimoto,Akifumi Ikehata,Yukihiro Ozaki +6 more
TL;DR: The optical properties of isolated single aggregates of Ag nanoparticles (Ag nanoaggregates) on which rhodamine 6G molecules were adsorbed were investigated to reveal experimentally a correlation among plasmon resonance Rayleigh scattering, surface-enhanced resonance Raman scattering (SERRS), and its background light emission.
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Direct observation of the absorption bands of the first electronic transition in liquid H2O and D2O by attenuated total reflectance far-UV spectroscopy.
TL;DR: Systematic measurements and the analysis of Kramers-Kronig transformation reveal that the first electronic transition band redshifted on heating, in good agreement with the redshift that has been frequently observed in the low-energy band tail of the X (1)A(1)-->A ( 1)B(1) absorption band.
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An attenuated total reflectance far-UV spectrometer
TL;DR: An original miniature IRE probe made of sapphire is designed that allows detection of the whole n --> sigma(*) transition absorption band of water down to 140 nm and is confirmed that this spectrometer is equally effective for spectral measurements of nonaqueous solvents with significant absorptivities in the FUV region.
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Far-Ultraviolet Spectroscopy in the Solid and Liquid States: A Review
TL;DR: In this article, the authors present a review of the state-of-the-art FUV spectroscopy of liquid and solid phases in the 140-280 nm region, which they refer to as the far-UV (FUV) region.
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Direct demonstration for changes in surface plasmon resonance induced by surface-enhanced Raman scattering quenching of dye molecules adsorbed on single Ag nanoparticles
TL;DR: In this article, changes in surface plasmon resonance (SPR) bands induced by surfaceenhanced Raman scattering (SERS) quenching of rhodamine 6G (R6G) molecules adsorbed on single Ag nanoparticles were investigated by light scattering microspectroscopy.