Zobrazeno 1 - 10 of 96 pro vyhledávání: '"Kei-Ichiro Murai"'
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Akademický článek
Synthesis of polycrystalline Ta₂O₅ inverse opal photonic crystal powders and their optical characterization
Autor: Taiki Maekawa, Hiroyuki Maekawa, Yuto Ikeda, Tomoya Onoe, Geoffrey I.N. Waterhouse, Kei-ichiro Murai, Toshihiro Moriga
Publikováno v: Open Ceramics, Vol 20, Iss , Pp 100688- (2024)
Polycrystalline Ta2O5 inverse opal (IO) photonic crystal powders were synthesized using PMMA colloidal crystals as sacrificial templates. We prepared Ta2O5 IO powders with vibrant structural colors at UV–vis wavelengths. The photonic bandgaps (PBGs
Externí odkaz: https://doaj.org/article/2e2016c00d5442eb9559f464095b3b84
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2
Microscopic Structure and Binding Mechanism of the Corrosion-Protective Film of Oleylpropanediamine on Copper in Hot Water
Autor: Haruka Yoshioka, Ken Yoshida, Naoki Noguchi, Tomoyuki Ueki, Kei-ichiro Murai, Kazuya Watanabe, Masaru Nakahara
Publikováno v: The Journal of Physical Chemistry C. 126(14):6436-6447
The structure of the film formed by oleylpropanediamine (OLDA) on the copper (Cu) metal surface in water at 150 °C was investigated by combining quantitative NMR and surface characterization methods. We succeeded in quantifying the amount of film fo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c23ebdeea93aad1b44dc73e909846232
http://repo.lib.tokushima-u.ac.jp/116877
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3
Fabrication of transparent ITO/GTO bilayer diode thin films
Autor: Imran Sutan Chairul, Atsushi Echimoto, Ryutaro Tazawa, Kei-ichiro Murai, Toshihiro Moriga
Publikováno v: Modern Physics Letters B.
Transparent diodes were fabricated by layering a Ga–Sn–O (GTO) film onto an In2O3:Sn (ITO) film using a facing-targeted DC sputtering method. When a GTO film containing [Formula: see text] mol% Ga was deposited on the surface of the conductive IT
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::82b8a9162b2e120aced9bc19e91f7410
https://doi.org/10.1142/s0217984923400390
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4
Characterization of negative thermal expansion material Zr2−xTixWP2O12 with MgO
Autor: Kei-Ichiro Murai, Norimasa Inoue, Tomoki Sawada, Yasushi Fujiwara, Toshihiro Moriga
Publikováno v: Modern Physics Letters B.
In this study, it is executed to obtain Zr[Formula: see text]Ti[Formula: see text]WP2O[Formula: see text] ([Formula: see text], 0.10, 0.15, 0.20) ceramics with high relative density, 0–0.9 wt% MgO was added as a sintering aid. The influence of MgO
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::02f15f80bf1ee934721c29e8ef5e98b2
https://doi.org/10.1142/s0217984923400389
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6
Rock-salt-type lithium–titanium oxynitride as anode material for Li-Ion secondary batteries
Autor: Yusuke Mizuta, Kohei Shizukawa, Rie Takahara, Kei-Ichiro Murai, Toshihiro Moriga
Publikováno v: Modern Physics Letters B. 36
We synthesized rock-salt-type Li–Ti oxynitride (LiTi[Formula: see text]O[Formula: see text]N[Formula: see text], [Formula: see text], 1.25, 1.5, 1.75, and 2) using solid-phase reaction. The best charge/discharge characteristics were obtained with a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0e9f60ca47a540820cefeeef64d29f67
https://doi.org/10.1142/s0217984922420428
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7
Synthesis and characterization of negative thermal expansion of the Zr2(WO4)(PO4)2 system
Autor: Kei-Ichiro Murai, Toshihiro Moriga, Masaru Takahashi, Tetsuta Koizumi, Norimasa Inoue
Publikováno v: Modern Physics Letters B. 36
In this study, Ti- and Mo-substituted Zr2(WO[Formula: see text](PO[Formula: see text] were synthesized using a conventional solid-state reaction technique. Coefficients of thermal expansions for samples were calculated by the results from the in situ
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::26e9a96d5d0d13b7166061e5a30ff52a
https://doi.org/10.1142/s0217984922420210
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8
Effect of A-site deficiency on perovskite-type Mn4+-activated La5/3MgTaO6 red phosphor and green luminescence of the Mn2+ occupied six-coordinate site in Mg2LaTaO6
Autor: Akihiro Nakanishi, Tomoya Onoe, Ryoto Morii, Kei-ichiro Murai, Toshihiro Moriga, Yutaka Kobayashi, Atsushi Sakaki, Shao-Ju Shih
Publikováno v: Journal of Solid State Chemistry. 319:123780
White light LEDs have a long life and high energy efficiency; however, their application is limited owing to the lack of red components. Herein, we use the solid-state reaction method to fabricate a new Mn-activated perovskite-type La5/3MgTaO6 phosph
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::284916d2061760536912bb357e2391ab
https://doi.org/10.1016/j.jssc.2022.123780
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10
The effect of Ga-content and target current on transparent conducting InGaSnO thin film by the DC sputtering on different substrates
Autor: Xin Zhi Wang, Kei-ichiro Murai, Toshihiro Moriga
Publikováno v: 2020 17th China International Forum on Solid State Lighting & 2020 International Forum on Wide Bandgap Semiconductors China (SSLChina: IFWS).
Transparent conducting oxides (TCO), indium-gallium-tin-oxides (IGTO), were deposited on Polyethylene terephthalate (PET) and glass substrate separately while using DC co-sputtering with SnO2 and In2O3 (with Ga2O3 pellet) target combinations. As diff
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a8702d45caffb8cc941d58bd69b41f04
https://doi.org/10.1109/sslchinaifws51786.2020.9308705
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