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pro vyhledávání: '"Koichi Okamoto"'
Publikováno v:
Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XX.
Autor:
Koichi Okamoto
Publikováno v:
Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XX.
Autor:
Satoru Kidoaki, Koichi Okamoto, Shihomi Masuda, Thasaneeya Kuboki, Yukiko Aida, Sou Ryuzaki, Yusuke Arima, Shi Ting Lee, Kaoru Tamada
Publikováno v:
Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIX.
Recently we have developed LSPR-mediated high resolution live-cell imaging techniques for adhesive cells on plasmonic metasurface composed of self-assembled gold or silver nanoparticles. Compared with other super-resolution microscopy techniques, our
Autor:
Koichi Okamoto
Publikováno v:
Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVII.
Plasmonics has been studied and used for various optoelectronic applications include efficient light-emitting diodes (LEDs) [1]. Next important challenge is to develop device applications and to extend into wide wavelength regions [2]. Here, I presen
Autor:
Koichi Okamoto
Publikováno v:
Smart Photonic and Optoelectronic Integrated Circuits XX.
Surface plasmon (SP) resonance with light waves and/or excitons can be used to enhance the emission efficiencies of light-emitting materials and devices. This approach was experimentally demonstrated by our group for enhancing the visible emission fr
Autor:
Narihito Okada, Mitsuru Funato, Kazuyuki Tadatomo, Koichi Okamoto, Yoichi Kawakami, Kaoru Tamada
Publikováno v:
SPIE Proceedings.
The surface plasmon (SP) resonance was used to increase the emission efficiencies toward high efficiency light-emitting diodes (LEDs). We obtained the enhancements of the electroluminescence from the fabricated plasmonic LED device structure by emplo
Autor:
Giichi Marutsuki, Koichi Okamoto, Fritz Henneberger, Shigeo Fujita, Yoichi Kawakami, Akio Kaneta, Fuminori Satou, Yukio Narukawa, Tsutomu Inoue, Takashi Mukai, Yoshihito Narita
Publikováno v:
SPIE Proceedings.
Scanning near field optical microscopy (SNOM) has been developed to assess the recombination mechanism in low-dimensional nitride semiconductors by employing spatial and temporal photoluminescence (PL) mapping under illumination-collection at cryogen
Autor:
Takashi Mukai, Mashahide Terazima, Yoichi Kawakami, Genichi Shimomiya, Shin Saijou, Shigeo Fujita, Koichi Okamoto
Publikováno v:
SPIE Proceedings.
Nonradiative dynamics of the carriers and/or excitons created by the photoexcitation in InGaN-based light emitting diodes (LEDs) with blue (460nm, 470nm), green (510nm, 540nm), and amber (600nm) emissions were observed by using the transient grating
Autor:
Shigeo Fujita, Koichi Okamoto, Kazumi Matsushige, Michiaki Mabuchi, Yoichi Kawakami, Junichi Shimada
Publikováno v:
Advances in Fluorescence Sensing Technology V.
Dopamine hydrochloric acid salt in aqueous solution was excited at 266 nm Al2O3:Ti laser and the sufficient fluorescence emission peaking at 330 nm was detected with a streak camera. The fluorescence decay curve was fitted by 1-exponentional function
Autor:
Shigeo Fujita, Koichi Okamoto, Kunimichi Omae, Akio Kaneta, Shin Saijou, Yoichi Kawakami, Takashi Mukai, Yukio Narukawa, Tomoaki Izumi, Kenichi Inoue
Publikováno v:
SPIE Proceedings.
Recombination dynamics of spontaneous and stimulated emissions have been assessed in InGaN-based light emitting diodes (LEDs) and laser diodes (LDs), by employing time- resolved photoluminescence and pump and probe spectroscopy. As for an In0.02Ga0.9