Publications

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  • “Fabrication of Au nanoparticles on poly(vinylpyrrolidone) nanowires exhibiting reversible frequency change of localized surface plasmon resonance”
    S. Tsukuda, S. Seki, M. Omichi, M. Sugimoto, A. Idesaki, T. Sekino, T. Omata
    AIP Advances 8, 015314(2018).
  • “Dense proton injection into phosphate glasses using corona discharge treatment
    T. Kinoshita,A. Miyazaki, K. Kawaguchi, D. Sakai,T. Yamaguchi, T. Omata, T. Ishiyama, M. Fujioka, H. Kaiju, J. Nishii
    Appl. Surf. Sci. 428, 718-722(2018).
  • “Mobility of Proton Carriers in Phosphate Glasses Depends on Polymerization of Phosphate Framework”
    T. Yamaguchia, T. Kataoka, S. Tsukuda, T. Ishiyama, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata
    Phys. Chem. Chem. Phys. 19, 29669–29675 (2017).
  • “Formation of Amorphous H3Zr2Si2PO12 by Electrochemical Substitution of Sodium Ions in Na3Zr2Si2PO12 with Protons”
    S. Tsukuda, K. Miyake, T. Yamaguchi, M. Kita, T. Ishiyama, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata
    Inorg. Chem. 56, 13949-13954 (2017).
  • “Wurtzite-derived quaternary oxide semiconductor Cu2ZnGeO4; its structural characteristics, optical properties and electronic structure”
    M. Kita, I. Suzuki, N. Ohashi, T. Omata
    Inorg. Chem. 56, 14277−14283(2017).
  • “Orientation control of β-NaGaO2 thin film: a precursor for β-CuGaO2 as a thin-film solar cell absorber”
    I. Suzuki, M. Tanemura, T. Omata
    J. Ceram. Soc. Jpn., 125, 872-875(2017).
  • “Synthesis of Colloidal Zn(Te,Se) Alloy Quantum Dots”
    H. Asano, K. Arai, M. Kita, T. Omata
    Mater. Res. Express 4, 106501(2017).
  • “Fabrication of β-CuGaO2 thin-films by ion-exchange of β-NaGaO2 thin-films”
    I. Suzuki, H. Nagatani, M. Kita, T. Omata
    Appl. Phys. Express 10, 095501(2017).
  • “Variation of crystal structure and optical properties of wurtzite-type oxide semiconductor alloys of β-Cu(Ga,Al)O2”
    H. Nagatani, Y. Mizuno, I. Suzuki, M. Kita, N. Ohashi, T. Omata
    J. Appl. Phys. 121, 235103 (2017).
  • “Effect of alkaline-earth species in phosphate glasses on mobility of proton carriers”
    T. Yamaguchi, Y. Saito, Y. Kuwahara, H. Yamashita, T. Ishiyama, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata
    J. Mater. Chem. A 5, 12385–12392 (2017).
  • “Formation of Au nanoparticle arrays on hydrogel two-dimensional patterns based on poly(vinylpyrrolidone)”
    S. Tsukuda, K. Okamoto, H. Yamamoto, T. Kozawa, T. Omata
    Jpn. J. Appl. Phys. 56, 06GG06 (2017).
  • “Design of Cadmium-free Colloidal II-VI Semiconductor Quantum Dots Exhibiting RGB Emission”
    H. Asano, T. Omata
    AIP Advances 7, 045309 (2017).
  • “Multinary wurtzite-type oxide semiconductors: present status and perspectives”
    I. Suzuki, T. Omata
    Semicond. Sci. Technol. 32, 013007(2017)
  • “First-principles study of CuGaO2 polymorphs: Delafossite α-CuGaO2 and wurtzite β-CuGaO2”
    I. Suzuki, H. Nagatani, M. Kita, Y. Iguchi, C. Sato, H. Yanagi, N. Ohashi, T. Omata
    Inorg. Chem. 55, 7610−7616(2016).
  • “High temperature phases with wurtzite-derived structure in Zn2LiGaO4–ZnO alloy system”
    M. Kita, T. Fukada, S. Yamaguchi, T. Omata
    J Alloys Comp. 688, 69-76 (2016).
  • “First principles calculations of ternary wurtzite β-CuGaO2”
    I. Suzuki, H. Nagatani, M. Kita, Y. Iguchi, C. Sato, H. Yanagi, N. Ohashi, T. Omata
    J. Appl. Phys. 119, 095701 (2016).
  • “Relationship between structure and mobility of proton carriers injected by electrochemical substitution of sodium ions with protons in 35NaO1/2-1WO3-8NbO5/2-5LaO3/2-51PO5/2-based glasses”
    T. Yamaguchi, T. Ishiyama, K. Sakuragi, J. Nishii, T. Yamashita, H. Kawazoe, N. Kuwata, J. Kawamura, T. Omata
    Solid State Ionics 288, 281–285(2016).
  • “Anisotropic Swelling of Hydrogel Nanowires Based on Poly(vinylpyrrolidone) Fabricated by Single Particle Nanofabrication Technique”
    S. Tsukuda, M Omichi, M. Sugimoto, A. Idesaki, V. S. Padalkar, S. Seki
    J. Polym. Sci. Part B Polym. Phys. 54, 1950-156(2016).
  • “Fabrication of Pt Nanoparticle Incorporated Polymer Nanowires by High Energy Ion and Electron Beam Irradiation”
    S. Tsukuda, R. Takahasi, S. Seki, M. Sugimoto, A. Idesaki, M. Yoshikawa, and S.-I. Tanaka
    Radiat. Phys. Chem. 118, 16-20(2016).
  • “Colloidal semiconductor quantum dots; syntheses, properties and applications”
    T. Omata
    J. Ceram. Soc. Jpn. 123, 1-8(2015).
  • “Phase separation and crystallization in sodium lanthanum phosphate glasses induced by electrochemical substitution of sodium ions with protons”
    K. Kawaguchi, T. Yamaguchi, T. Omata, T. Yamashita, H. Kawazoe, J. Nishii
    Phys. Chem. Chem. Phys. 17, 22855-22861(2015).
  • “高品位銅マットからのNi, Co濃縮相の抽出分離”
    門前兼廣, 松尾伸也, 小俣孝久
    J. MMIJ 131, 487-496 (2015).
  • “Structural change of NaO1/2-WO3-NbO5/2-LaO3/2-PO5/2 glass induced by electrochemical substitution of sodium ions with protons”
    T. Ishiyama, T. Yamaguchi, J. Nishii, T. Yamashita, H. Kawazoe, N. Kuwata, J. Kawamura, T. Omata
    Phys. Chem. Chem. Phys.17, 13640-13646(2015).
  • “Improving thermal stability and its effects on proton mobility in proton-conducting phosphate glasses prepared by the electrochemical substitution of sodium ions with protons”
    T. Yamaguchi, T. Ishiyama, K. Sakuragi, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata
    Solid State Ionics 275, 62–65 (2015).
  • “Wurtzite-derived ternary I-III-O2 semiconductors”Review PaperOPEN Access
    T. Omata, H. Nagatani, I. Suzuki, M. Kita
    Sci. Technol. Adv. Mater. 16, 024902 (2015).
  • “Widely bandgap tunable amorphous Cd-Ga-O oxide semiconductors exhibiting electron mobilities ≥10 cm2V−1s−1”
    H. Yanagi, C. Sato, Y. Kimura, I. Suzuki, T. Omata, T. Kamiya, H. Hosono
    Appl. Phys. Lett. 106, 082106(2015)
  • “Structural and thermal properties of a ternary narrow gap oxide semiconductor; wurtzite-derived β-CuGaO2”
    H. Nagatani, I. Suzuki, M. Kita, M. Tanaka, Y. Katsuya, O. Sakata, S. Miyoshi, S. Yamaguchi, T. Omata
    Inorg. Chem. 54, 1698−1704 (2015).
  • “Synthesis of size-controlled colloidal InAs quantum dots using triphenylarsine as a stable arsenic source”
    H. Uesugi, M. Kita, T. Omata
    J. Cryst. Growth 416, 134–141 (2015).
  • “硫化製錬における非鉄金属とNaのマット‐スラグ間の分配”
    門前兼廣, 松尾伸也, 小俣孝久
    J. MMIJ, 131, 65-73(2015).
  • “Syntheses of colloidal chalcogenides and oxides nanocrystals and their applications”Review Paper
    T. Omata
    J. Ceram. Soc. Jpn. 123, 1-8(2015).
  • “Structure of β-AgGaO2; ternary I-III-VI2 oxide semiconductor with a wurtzite-derived structure”
    H. Nagatani, I. Suzuki, M. Kita, M. Tanaka, Y. Katsuya, O. Sakata and T. Omata
    J. Solid State Chem. 222, 66–70(2015). 
  • “Fabrication of Thermoresponsive Nanoactinia Tentacles by a Single Particle Nanofabrication Technique”
    M. Omichi, H. Marui, V. S. Padalkar, A. Horio, S. Tsukuda, M. Sugimoto, and S. Seki
    Langmuir 31, 11692-11700(2015).
  • “α-PbO2-Related Phase Appearing in the SnIV-Ta-O System Transformed from Cation-Ordered Fluorite-Related Phase”
    M. Kita, T. Omata, S. Otsuka-Yao-Matsuo, M. Katada
    J. Ceram. Soc. Jpn. 122, 902-907(2014).
  • “Facile synthesis of colloidal InAs nanocrystals using triphenylarsine as an arsenic source”
    H. Uesugi, M. Kita, T. Omata
    J. Cryst. Growth 405, 39–43 (2014)..
  • “Electronic Transition Responsible for Size-Dependent Photoluminescence of Colloidal CuInS2 Quantum Dots”
    T. Omata, K. Nose, K. Kurimoto and M. Kita
    J. Mater. Chem. C, 2, 6867–6872 (2014).
  • “Enhancement by praseodymium addition of catalytic activity of nickel supported on cerium–zirconium oxide in methane steam reforming”
    T. Ishiyama, K. Kurimoto, S. Otsuka-Yao-Matsuo, T. Omata
    J. Ceram. Soc. Jpn. , 122, 537-542(2014). 
  • “廃棄物の硫化製錬における非鉄金属元素のマット、スラグ間の分配”
    門前兼廣, 小俣孝久, 松尾伸也,
    J. MMIJ, 130, 115-124 (2014).
  • “Phase determination of zinc selenide nanocrystals depending on the ligand species of precursor complexes”
    T. Omata, H. Uesugi, M. Kita,
    J. Cryst. Growth 394, 81-88(2014).
  • “Wurtzite CuGaO2: A direct and narrow band gap oxide semiconductor applicable to solar cell absorber”
    T. Omata, H. Nagatani, I. Suzuki, M. Kita, H. Yanagi and N. Ohashi,
    J. Am. Chem. Soc. 136, 3378-3381(2014). 
  • “Electrochemical Substitution of Sodium Ions with Protons in Phosphate Glass to Fabricate Pure Proton Conducting Glass at Intermediate Temperatures”
    T. Ishiyama, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata,
    J. Mater. Chem. A, 2, 3940-3947(2014).
  • “Synthesis of Colloidal Solution of β-LiGaO2 Nanocrystals Capped with Organic Surfactant”
    K. Takahashi, Y. Maeda, T. Suehiro, M. Kita, T. Omata,
    J. Ceram. Soc. Jpn. 122, 195-197(2014). 
  • “A simple and rapid method for high-resolution Visualization of Single-ion Tracks”
    M. Omichi, W. Choi, D. Sakurai, S. Tsukuda, M. Sugimoto, and S. Seki,
    AIP Adv. 4, art. No. 117128(2014).
  • “Fabrication of Enzyme-degradable and Size-controlled Protein Nanowires Using Single Particle Nano-fabrication Technique”
    M. Omichi, A. Asano, S. Tsukuda, K. Takano, M. Sugimoto, A. Saeki, D. Sakamaki, A. Onoda, T. Hayashi, and S. Seki,
    Nature Communications 5, art. No. 3718(2014).
  • “Spatial Point Analysis of Ion Track Patterns Using Common Polymer Films by Atomic Forced Microscopy”
    M. Omichi, W. Choi, S. Tsukuda, M. Sugimoto, and S. Seki,
    J. Photopolym. Sci. Technol. 27, 561-564(2014).
  • “Proton conducting tungsten phosphate glass and its application to the intermediate temperature fuel cell”
    T. Ishiyama, S. Suzuki, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata,
    Solid State Ionics 262, 856 (2013) 
  • “Pseudo-Binary Alloying System of ZnO-AgGaO2 Reducing the Energy Band Gap of Zinc Oxide”
    I. Suzuki, H. Nagatani, Y. Arima, M. Kita and T. Omata,
    Appl. Phys. Lett. 103, 222107 (2013).
  • “Fabrication of β-AgGaO2 thin film by rf-magnetron sputtering”
    I. Suzuki, H. Nagatani, Y. Arima, M. Kita and T. Omata,
    Thin Solid Films, 559, 112 (2013)
  • “Electrochemical Substitution of Alkali Ions in Tungsten Phosphate Glass with Protons”
    T. Ishiyama, S. Suzuki, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata,
    J. Electrochem. Soc. 160, E143-E147 (2013).
  • “Fabrication of ZnF2 Thin Films and Their Vacuum Ultraviolet Transparency”
    I. Suzuki, T. Omata, Y. Shiratsuchi, R. Nakatani, N. Kitamura, S. Otsuka-Yao-Matsuo,
    Thin Solid Films, 534, 508 (2013).
  • “Impact of the Electrical Forming Process on the Resistance Switching Behaviors in Lanthanum-Doped Strontium Titanate Ceramic Chip Devices”
    S. Hirose, H. Niimi, K. Kageyama, A. Ando, H. Ieki, T. Omata,
    Jpn. J. Appl. Phys. 52, 045802 (2013).
  • “Poly(vinylphenol) Nanowires Including Au Nanoparticles Formed by Single Nanofabrication Technique”
    S. Tsukuda, M. Sugimoto, A. Idesaki, A. Asano, S. Seki, and S.-I. Tanaka,
    Radiat. Phys. Chem. 84, 39-41(2013).
  • “Sugar Nanowires Based on Cyclodextrin on Quarz Crystal Microbalance for Gas Sensing with Ultra-hgih Sensitivity”
    A. Asano, Y. Maeyoshi, S. Watanabe, A. Saeki, M. Sugimoto, M. Yoshikawa, H. Nanto, S. Tsukuda, S.-I. Tanaka, and S. Seki,
    Radiat. Phys. Chem. 84, 196-199(2013).
  • “Fullerene Nanowires Produced by Single Particle Nanofabrication Technique and Their Photovoltaic Applications”
    S. Suwa, Y. Maeyoshi, S. Tsukuda, M. Sugimoto, A. Saeki, and S. Seki,
    J. Photopolym. Sci. Technol. 26, 193-197(2013).
  • “Synthesis of Sm-doped TiO2 Nanotube and Analysis of Its Methylene Blue Removal Properties under Dark and UV Irradiated Conditions”
    D. J. Park, T. Sekino, S. Tsukuda, and S.-I. Tanaka,
    Res. Chem. Intermed. 39, 1581-1591(2013).
  • “Degradation of potential barriers in ZnO-based chip varistors due to electrostatic discharge”
    S. Hirose, H. Niimi, K. Kageyama, H. Ieki, T. Omata, S. Otsuka-Yao-Matsuo,
    J. Appl. Phys. 112, 033707/1-11 (2012).
  • “Structural variation and optical properties of ZnO-LiGaO2 pseudo-binary system”
    T. Omata, M. Kita, K. Tachibana and S.Otsuka-Yao-Matsuo,
    J. Solid State Chem. 188, 92-99(2012). 
  • “Ultraviolet electroluminescence from colloidal ZnO quantum dots in an all-inorganic multilayer light-emitting device”
    T. Omata, Y. Tani, S. Kobayashi, K. Takahashi, A. Miyanaga, Y. Maeda and S. Otsuka-Yao-Matsuo,
    Appl. Phys. Lett. 100, 061104(2012). 
  • “Quantum Dot Phosphors and Their Application to Inorganic Electroluminescence Device”Review Paper
    T. Omata, S. Kobayashi, Y. Tani, S. Otsuka-Yao-Matsuo,
    Thin Solid Films 520, 3829-3834(2012). 
  • “Fullerene Nanowires as a Versatile Platform for Organic Electronics”
    Y. Maeyoshi, A. Saeki, S. Suwa, M. Omichi, H. Marui, A. Asano, S. Tsukuda, M. Sugimoto, A. Kishimura, K. Kataoka, S. Seki,
    Scientific Reports 2, art. No. 600(2012).
  • “Semiconducting Cross-linked Polymer Nanowires Prepared by High-energy Single-particle Track Reactions”
    S. Seki, A. Saeki, W. Choi, Y. Maeyoshi, M. Omichi, A. Asano, K. Enomoto, C. Viavakumar, M. Sugimoto, S. Tsukuda, and S.-I. Tanaka,
    J. Phys. Chem. B, 116(42), 12857-12863 (2012).
  • “Fabrication and Arrangement of Clickable Nanowires by the Single-particle Nanofabrication Technique”
    A. Asano, M. Omichi, S. Tsukuda, K. Takano, M. Sugimoto, A. Saeki, and S. Seki,
    J. Phys. Chem. C 116(2012)17274-17279.
  • “Temperture-responsive One-dimensional Nanogels Formed by the Cross-linker-aided Single Particle Nanofabrication Technique”
    M. Omichi, H. Marui, K. Takano, S. Tsukuda, M. Sugimoto, S. Kuwabata, and S. Seki,
    Appl, Mater. Interfaces 4(2012)5492-5497.
  • “Fabrication of Nanowires Based on Polystyrene Derivatives by Single Particle Nano-fabrication Technique”
    A. Asano, Y. Maeyoshi, K. Takano, M. Omichi, M. Sugimoto, M. Yoshikawa, S. Tsukuda, S.-I. Tanaka, A. Saeki, and S. Seki,
    J. Photopolym. Sci. Technol. 25, 685-688(2012).
  • “Nanostructures and Physicochemical Properties of Pt Nanoparticle-loaded Titania Nanotubes Synthesized by Photoreduction Method”
    D. J. Park, T. Sekino, S. Tsukuda, S.-I. Tanaka,
    J. Ceram. Soc. Japan 120, 307-310(2012).
  • “Synthesis of LiGaO2 nanocrystals and their application toward bright UV-emission from ZnO quantum dots”
    T. Omata, A. Tazuke K. Nose, S. Otsuka-Yao-Matsuo,
    J. Cryst. Growth 330, 9-16 (2011). 
  • “Fabrication of ZnO Films Alloyed with LiGaO2 by RF-Magnetron Sputtering and Their Optical Property”
    T. Omata, K. Tanaka, S. Otsuka-Yao-Matsuo,
    Jpn. J. Appl. Phys. 50, 061102 (2011). 
  • “Fabrication of Core-Shell-Type Copper Indium Selenide and Zinc Selenide Composite Quantum Dots and Their Optical Properties”
    T. Omata, K. Nose and S. Otsuka-Yao-Matsuo,
    J. Nanosci. Nanotechnol. 11, 4815-4823(2011). 
  • “Zn2LiGaO4, Wurtzite-Derived Wide Band Gap Oxide”
    T. Omata, M. Kita, K. Nose, K. Tachibana, S. Otsuka-Yao-Matsuo,
    Jpn. J. Appl. Phys. 50, 031102(2011). 
  • “UV Luminescent Organic-Capped ZnO Quantum Dots Synthesized by Alkoxide Hydrolysis with Dilute Water”
    T. Omata, K. Takahashi, S. Hashimoto, Y. Maeda, K. Nose, S. Otsuka-Yao-Matsuo and K. Kanaori,
    J. Colloid and Interface Science 355, 274-281(2011). 
  • “Photoluminescence of Samarium-doped TiO2 Nanotubes”
    D. J. Park, T. Sekino, S. Tsukuda, A. Hayashi, T. Kusunose, and S.-I. Tanaka,
    J. Solid State Chem. 184, 2695-2700(2011).
  • “Control of Radial Size of Crosslinked Polymer Nanowire by Ion Beam and γ Ray Irradiation”
    S. Tsukuda, A. Asano, M. Sugimoto, A. Idesaki, S. Seki, and S.-I. Tanaka,
    J. Photopolym. Sci. Technol. 23(2010)231-234.
  • “Synthesis of Ternary CuInS2 Nanocrystals; Phase Determination by Complex Ligand Species”
    K. Nose, Y. Soma, T. Omata and S. Otsuka-Yao-Matsuo,
    Chem. Mater., 21, 2607–2613 (2009).
  • “Size Dependent Optical Band Gap of Ternary I-III-VI2 Semiconductor Nanocrystals”
    T. Omata, K. Nose and S. Otsuka-Yao-Matsuo,
    J. Appl. Phys. 105, 073106-1-5(2009). 
  • “Synthesis of Y2O3-Doped CeO2 Nanocrystals and Their Surface Modification”
    Y. Goto, K. Takahashi, T. Omata and S. Otsuka-Yao-Matsuo,
    J. Phys.: Conf. Ser. 165, 012041 (2009).
  • “Photoluminescence of CuInS2-based Semiconductor Quantum Dots; Its Origin and the Effect of ZnS Coating”
    K. Nose, N. Fujita, T. Omata, S. Otsuka-Yao-Matsuo, W. Kato, M. Uehara, H. Nakamura, H. Maeda, H. Kamioka, and H. Hosono,
    J. Phys.: Conf. Ser. 165, 012028(2009). 
  • “Colloidal Synthesis of Ternary Copper Indium Diselenide Quantum Dots and Their Optical Properties”
    K. Nose, T. Omata and S. Otsuka-Yao-Matsuo,
    J. Phys. Chem. C 113, 3455-3460 (2009). 
  • “Syntehsis of CuInS2 Nanocrystals and Their Structural Transformation Triggered by the Ligand Exchange”
    K. Nose, Y. Soma, T. Omata and S. Otsuka-Yao-Matsuo,
    Chinese Science Bulletin 54, 4008-4008 (2009).
  • “Novel Wide Band Gap Alloyed Semiconductors, x(LiGaO2)1/2-(1-x)ZnO, and Fabrication of their Thin Films”
    T. Omata, K. Tanaka, A. Tazuke, K. Nose, S. Otsuka-Yao-Matsuo,
    Science in China Ser. E-Technological Sciences 52, 111-115(2009). 
  • “Extremely Suppressed Grain Growth of Y2O3-Stabilized Zirconia (YSZ) Nanocrystals Synthesized by the Nonhydrolytic Sol-Gel Technique”
    Y. Goto, T.Omata, S.Otsuka-Yao-Matsuo,
    J. Electrochem. Soc., 156, K4-K9 (2009).
  • “Formation of Hybrid Nano-structures by Ion Beam Irradiation to the Sol-Gel Film”
    S. Tsukuda, S. Seki, M. Sugimoto, A. Idesaki, S. Tagawa, and S.-I. Tanaka,
    J. Photopolym. Sci. Technol. 22, 245-248(2009).
  • “Sugar Nanowires Based on Cyclodextrin Prepared by Single Particle Nanofabrication Technique”
    S. Watanabe, A. Asano, S. Seki, M. Sugimoto, M. Yoshikawa, S. Tagawa, S. Tsukuda, and S.-I. Tanaka,
    Radiat. Phys. Chem. 78, 1071-1075(2009).
  • “Formation of Ni3C Nanocrystals of by Thermolysis of Nickel Acetylacetonate in Oleylamine: Characterization using Hard X-ray Photoelectron Spectroscopy”
    Y. Goto, K. Taniguchi, T. Omata, S. Otsuka-Yao-Matsuo, N. Ohashi, S. Ueda, H. Yoshikawa, Y. Yamashita, H. Ohashi and K. Kobayashi,
    Chem. Mater. 20, 4156-4160(2008). 
  • “Novel Wide Band Gap Semiconductor Alloy; x(LiGaO2)1/2-(1-x)ZnO”
    T. Omata, K. Tanaka, A. Tazuke, K. Nose and S. Otsuka-Yao-Matsuo,
    J. Appl. Phys.  103, 083706(2008). 
  • “Mixed Dopant Efect in SrZrO3-Bbased Proton Conductor”
    T. Omata, T. Fuke and S. Otsuka-Yao-Matsuo,
    Solid State Ionics 179, 1116-1119(2008). 
  • “SiC Nanowires Formed by High Energy Ion Beam Irradiation to Polymer Films and Heating”
    S. Tsukuda, S. Seki, M. Sugimoto, S. Tagawa, and S.-I. Tanaka,
    J. Ceram. Proc. Res. 9, 466-469(2008).
  • “Multi-functional Polymer Nanowires with Ultra-high Aspect Ratio Produced by Single Particle Nano-fabrication Technique”
    S. Seki, S. Watanabe, M. Sugimoto, S. Tagawa, and S. Tsukuda,
    J. Photopolym. Sci. Technol. 21, 541-543(2008).
  • “Nanocrystals of Zirconia and Ceria Based Solid Electrolytes; Syntheses and Properties”
    T. Omata, Y. Goto and S. Otsuka-Yao-Matsuo,
    Science and Technology of Advanced Materials, 8(6), 524-530(2007).
  • “Chemical Role of Amines in the Colloidal Synthesis of CdSe Quantum Dots on Their Luminescence Properties”
    K. Nose, H. Fujita, T. Omata, S. Otsuka-Yao-Matsuo, H. Nakamura and H. Maeda,
    J. Luminescence 126, 21-26 (2007). 
  • “Formation of Isolated Ultrafine Optical Nanofibers by Single Particle Nanofabrication Technique”
    S. Seki, S. Tsukuda, S. Tagawa, M. Sugimoto, A. Watanabe, M. Tokuji,
    J. Photopolym. Sci. Technol. 20, 125-128(2007).
  • “Nanowires with Controlled Sizes Formed by Single Ion Track Reactions in Polymers”
    S. Tsukuda, S. Seki, S. Tagawa, and M. Sugimoto,
    Surf. Coat. Technol. 201, 8526-8530(2007).
  • “Cross-linked Silicon Based Polymer Nanowire Formation by High Energy Charged Particles”
    S. Seki, S. Tsukuda, S. Tagawa, and M. Sugimoto,
    Surf. Coat. Technol. 201, 8486-8489(2007).
  • “Ion Beam Induced Nano-space Reactions and Nano-wire Formation in Polymers by High Energy Sub-mm Heavy Ion Beams”
    S. Tagawa, S. Tsukuda, S. Seki, M. Sugimoto, T. Sato, M. Oikawa, and T. Sakai,
    Surf. Coat. Technol. 201,8495-8498(2007).
  • “Synthesis of CeO2, ZrO2 Nanocrystals and Core-Shell-Type Nanocomposites”
    T. Omata, S. Sasai, Y. Goto, M. Ueda and S. Otsuka-Yao-Matsuo,
    J. Electrochem. Soc. 153(12), A2269-A2273(2006). 
  • “Hydration Behavior of Ba2Sc2O5 with an Oxygen Deficient Perovskite Structure”
    T. Omata, T. Fuke and S. Otsuka-Yao-Matsuo,
    Solid State Ionics 177, 2447-2451(2006). 
  • “Tunable Photoluminescence Wavelength of Chalcopyrite CuInS2-Based Semiconductor Nanocrystals Synthesized in a Colloidal System”
    H. Nakamura, W. Kato, M. Uehara, K. Nose, T. Omata, S. Otsuka-Yao-Matsuo, M. Miyazaki, and H. Maeda,
    Chem. Mater. 18, 3330-3335(2006).
  • “Characterization of Indium-Tin Oxide Sputtering Targets Showing Various Densities of Nodule Formation”
    T. Omata, M. Kita, H. Okada, S. Otsuka-Yao-Matsuo, N. Ono and H. Ikawa,
    Thin Solid Films 503, 22-28 (2006). 
  • “Correlation between Roughness of Nanowires and Polymer Backbone Conformation”
    S. Seki, S. Tsukuda, S. Tagawa, and M. Sugimoto,
    Macromolecules 39, 7446-7450(2006).
  • “Customized Morphologies of Self-condensed Multi-segment Polymer Nanowires”
    S. Tsukuda, S. Seki, S. Tagawa, and M. Sugimoto,
    J. Phys. Chem. B 110, 19319-19322(2006).
  • “Self-condensed Nanoparticles of Oligofluorenes with Water Soluble Chains”
    Y. Koizumi, S. Seki, S. Tsukuda, S. Sakamoto, and S. Tagawa,
    J. Am. Chem. Soc. 128, 9036-9037(2006).
  • “Infrared Study of High Temperature Proton Conducting Sr(Zr0.95MIII0.05)O3-δ; Formation of MIIIO6-Cluster Depending on Dopant Species”
    T. Omata, Y. Noguchi and S. Otsuka-Yao-Matsuo,
    Solid State Ionics 176, 2941-2944 (2005). 
  • “Synthesis of Novel Cation-Ordered Compounds with Fluorite Related Structure Prepared by Oxidation of Sn-Ta-O pyrochlore”
    M. Kita, T. Omata, S. Otsuka-Yao-Matsuo and M. Katada
    J. Solid State Chem. 178, 1254-1261(2005). 
  • “Formation and Thermal Stability of Hydrate-Like Compounds of Ba2(In1-xMIIIx)2O5・nH2O (MIII=Ga, Sc, Lu and Y)”
    T. Omata, M. Kita, Y. Goto, T. Okura and S. Otsuka-Yao-Matsuo,
    J. Electrochem. Soc. 152, A1068-1072(2005). 
  • “Infrared Study of High Temperature Proton Conducting Aliovalently Doped SrZrO3 and BaZrO3; Formation of YO6-Cluster in Y-Doped SrZrO3”
    T. Omata, Y. Noguchi and S. Otsuka-Yao-Matsuo,
    J. Electrochem. Soc. 152, E200-205 (2005). 
  • “Electrical Conduction Properties of Sr-Doped LaPO4 and CePO4 under Oxidizing and Reducing Conditions”
    N. Kitamura, K. Amezawa, Y. Tomii, T. Hanada, N. Yamamoto, T. Omata, and S. Otsuka-Yao-Matsuo,
    J. Electrochem. Soc. 152, A658-663(2005). 
  • “Synthesis of CdSe Quantum Dots by a Micro-Flow-Reactor and Their Optical Properties”
    T. Omata, K. Nose, S. Otsuka-Yao-Matsuo, H. Nakamura and H. Maeda,
    Jpn. J. Appl. Phys. 44, 452-456(2005). 
  • “Characterization of Novel Cation Ordered Compounds with Fluorite and α-PbO2 Related Structures Prepared by Oxidation of Sn-Nb-O pyrochlore”
    T. Omata, M. Kita, S. Otsuka-Yao-Matsuo and M. Katada,
    J. Phys. Chem. Solids 66, 53-62 (2005). 
  • “Effect of Ion Beam Energy and Polymer Weight on the Thickness of Nanowires Produced by Ion Bombardment of Polystyrene Thin Films”
    S. Tsukuda, S. Seki, S. Tagawa, and M. Sugimoto,
    Appl. Phys. Lett. 87, 233119-1-3 (2005).
  • “Effects of Backbone Configuration of Polysilanes on Nanoscale Structures Formed by Single-Particle Nanofabrication Technique”
    S. Seki, S. Tsukuda, K. Maeda, S. Tagawa, H. Shibata, M. Sugimoto, K. Jinbo, I. Hashitomi, and A. Kohyama,
    Macromolecules 38, 10164-10170(2005).
  • “Correlation between Edge Roughness of Nanostructures and Backbone Configuration of Polymer”
    S. Seki, S. Tsukuda, S. Tagawa, and M. Sugimoto,
    J. Photopolym. Sci. Technol. 18, 449-450(2005).
  • “Formation of Nanowires Based on p-Conjugated Polymers by High-Energy Ion Beam Irradiation”
    S. Tsukuda, S. Seki, M. Sugimoto, and S. Tagawa,
    Jpn. J. Appl. Phys. 44, 5839-5842(2005).
  • “Proton Solubility for La2Zr2O7 with a Pyrochlore Structure Doped with a Series od Alkaline-earth Ions”
    T. Omata, K. Ikeda, R. Tokashiki and S. Otsuka-Yao-Matsuo,
    Solid State Ionics 167, 389-397(2004).
  • “Photocatalytic Behavior of Cerium Titanates, CeTiO4 and CeTi2O6 and Their Composite Powders with SrTiO3”
    S. Otsuka-Yao-Matsuo, T. Omata, and M. Yoshimura,
    J. Alloys and Compounds 376, 262-267(2004). 
  • “O-H stretching Vibration of Proton Conducting Alkaline-Earth Zirconates”
    T. Omata, M. Takagi and S. Otsuka-Yao-Matsuo,
    Solid State Ionics 168, 99-109(2004). 
  • “Synthesis of Novel Compounds with Cation Ordered Fluorite and α-PbO2 Related Structures by Oxidation of Sn2Nb2O7 Pyrochlore”
    T. Omata, M. Kita, S. Otsuka-Yao-Matsuo and M. Katada,
    J. Alloys and Compounds 370, 80-89(2004). 
  • “Inhomogeneous Distribution of Crosslinks in Ion Tracks in Polystyrene and Polysilanes”
    S. Seki, S. Tsukuda, K. Maeda, Y. Matsui, A. Saeki, and S. Tagawa,
    Phys. Rev. B 70, 144203-1-8(2004).
  • “Precise Control of Nanowire Formation Based on Polysilane for Photoelectronic Device Application”
    S. Tsukuda, S. Seki, A. Saeki, T. Kozawa, S. Tagawa, M. Sugimoto, A. Idesaki, and S. Tanaka,
    Jpn. J. Appl. Phys. 43, 3810-3814(2004).
  • “Fabrication of Nano-Wires Using High-Energy Ion Beams”
    S. Tsukuda, S. Seki, S. Tagawa, M. Sugimoto, A. Idesaki, S. Tanaka, and A. Oshima,
    J. Phys. Chem. B 108, 3407-3409(2004).
  • “Effect of Dopant Species on the Dissolving Site of the Protons in La2Zr2O7 Doped with Alkaline-earth Ions”
    T. Omata, M. Takagi and S. Otsuka-Yao-Matsuo,
    J. Electrochem. Soc. 150, E590-E594(2003). 
  • “Thermodynamic Stability of Metastable Tetragonal t’-Ce0.5Zr0.5O2 Phase in the CeO2-ZrO2 system”
    S. Otsuka-Yao-Matsuo, T. Yao and T. Omata,
    High Temp. Mater. Proces. 22, 157-164(2003). 
  • Photobleaching of Methylene Blue Aqueous Solution Sensitized by Composite Powders of Titanium Oxide with SrTiO3, BaTiO3 and CaTiO3”
    S. Otsuka-Yao-Matsuo, T. Omata, S. Ueno and M. Kita,
    Mater. Trans. 44, 2124-2129(2003).
  • “Photodegradation of Methylene Blue Aqueous Solution Sentitized By Pyrochlore-related κ-CeZrO4 Phase”
    T. Omata, K. Ono and S. Otsuka-Yao-Matsuo,
    Mater. Trans. 44, 1620-1623(2003). 
  • “Photocatalytic behavior of titanium oxide-perovskite type Sr(Zr1-xYx)O3-δ composite particle”
    T. Omata and S. Otsuka-Yao-Matsuo,
    J. Photochem. Photobio. A: Chemistry, 156, 243-248(2003). 
  • “Cross-linked Polymer Nano-Wires with Controlled Shape and Orientation by High Energy Single Ion Hitting”
    S. Tsukuda, S. Seki, S. Tagawa, M. Sugimoto, A. Idesaki, and S. Tanaka,
    J. Photopolym. Sci. Technol. 16, 433-434(2003).
  • “Nano-wire Formation and Selective Adhesion on Substrates by Single Ion Track Reaction in Polysilanes”
    S. Seki, S. Tsukuda, Y. Yoshida, T. Kozawa, S. Tagawa, M. Sugimoto, and S. Tanaka,
    Jpn. J. Appl. Phys. 42, 4159-4161(2003).
  • “Infrared Absorption Spectra of High Temperature Proton Conducting Ca2+-doped La2Zr2O7”
    T. Omata and S. Otsuka-Yao-Matsuo,
    J. Electrochem. Soc. 148, E475-482(2001). 
  • “Electrical Conductivity of metastable κ-CeZrO4 Phase Possessing Ordered Arrangement of Ce and Zr Ions”
    N. Izu, H. Kishimoto, T. Omata, T. Yao and S. Otsuka-Yao-Matsuo,
    Sci. Tech. Adv. Mater. 2, 443-448(2001).
  • “Oxygen Release Behavior of Metastable Tetragonal t’meta-(Ce0.5Zr0.5)O2 Phases Prepared by reduction and Successive Oxidation of t’ Phase”
    N. Izu, H. Kishimoto, T. Omata, K. Ono and S. Otsuka-Yao-Matsuo,
    Sci. Tech. Adv. Mater. 2, 397-404(2001). 
  • “Electrical Properties of Proton Conducting Ca2+-doped La2Zr2O7 with a pyrochlore-type Structure”
    T. Omata and S. Otsuka-Yao-Matsuo,
    J. Electrochem. Soc. 148, E252-261(2001). 
  • “Crystal Structure of metastable κ-CeZrO4 phase possessing an ordered arrangement of Ce and Zr ions”
    H. Kishimoto, T. Omata, S. Otsuka-Yao-Matsuo, K. Ueda, H. Hosono and H. Kawazoe,
    J. Alloys and Compounds 312, 94-103(2000). 
  • “Electron Trapping Center and SnO2-doping Mechanism of Indium Tin Oxide”
    T. Omata, H. Fujiwara, S. Otsuka-Yao-Matsuo and N. Ono,
    Applied Physics A 71(6), 609-614(2000). 
  • “Electrical Conductivity of Novel Tetragonal t’meta-(Ce0.5Zr0.5)O2 Phase Prepared by Reduction and Successive Oxidation of t’ Phase”
    N. Izu, H. Kishimoto, T. Omata and S. Otsuka-Yao-Matsuo,
    J. Solid State Chem. 151, 253-259(2000). 
  • “Vibrational spectroscopic and X-ray diffraction studies of cerium zirconium oxides with Ce/Zr composition ratio=1
    prepared by reduction and successive oxidation of t’-(Ce0.5Zr0.5)O2 phase”
    T. Omata, H. Kishimoto, S. Otsuka-Yao-Matsuo, N. Ohtori and N. Umesaki,
    J. Solid State Chem. 147, 573-583(1999). 
  • “Observation of electronic structure in conduction band of CaTiO3”
    K. Ueda, H. Yanagi, R. Noshiro, H. Mizoguchi, T. Omata, N. Ueda, H. Hosono and H. Kawazoe,
    J. Ceram. Soc. Jpn. 106(10), 964-967(1998). 
  • “Oxygen release behavior of Ce(1-x)ZrxO2 powders and appearance of Ce(8-4y)Zr4yO(14-δ) solid solution in the ZrO2-CeO2-CeO1.5 system”
    N. Izu, T. Omata and S. Otsuka-Yao-Matsuo,
    J. Alloys and Compounds 270, 107-114(1998). 
  • “Properties of transition metal oxides with layered perovskite structure”
    M. Takemoto, T. Miyajima, K. Takayanagi, T. Ogawa, H. Ikawa and T. Omata,
    Solid State Ionics 108, 255-260(1998). 
  • “High efficiency-carrier-generation for the oxygen release reaction in indium tin oxide”
    T. Omata, H. Fujiwara, S. Otsuka-Yao-Matsuo, N. Ono and H. Ikawa,
    Jpn. J. Appl. Phys. Part 2 37(7B), 879-881 (1998). 
  • “Oxygen release behavior of CeZrO4 powders and appearance of new compoundsκand t* “
    S. Otsuka-Yao-Matsuo, T. Omata, N. Izu and H. Kishimoto,
    J. Solid State Chem. 138, 47-54(1998). 
  • “Thermodynamic behavior of various phases appearing in the CeZrO4-CeZrO3.5 system and the formation of metastable solid solutions”
    S. Otsuka-Yao-Matsuo, N. Izu, T. Omata and K. Ikeda,
    J. Electrochem. Soc. 145(4), 1406-1413(1998). 
  • “In-situ observation of the electrical conductivity upon release and uptake of oxygen in indium tin oxide sinter”
    T. Omata, H. Fujiwara, S. Otsuka-Matsuo-Yao and N. Ono,
    Jpn. J. Appl. Phys. Part 1 37(3),868-871 (1998). 
  • “DC electrorheology of fluid suspending barium titanate in the range of ferroelectric size effects”
    H. Ikawa, T. Katou, M. Satou, T. Omata and T. Hayashi,
    Ferroelectrics 203, 241-248(1997).
  • “Water and hydrogen evolution properties and protonic conducting behaviors of Ca2+-doped La2Zr2O7 with a pyrochlore structure”
    T. Omata, K. Okuda, S. Tsugimoto and S. Otsuka-Matsuo-Yao,
    Solid State Ionics 104, 249-258(1997). 
  • “New mixed-valence oxides of bismuth: Bi1-xYxO1.5+δ(x=0.4)”
    H.Mizoguchi, K.Ueda, H.Kawazoe, H.Hosono, T.Omata and S. Fujitsu,
    J. Mater. Chem., 7(6), 943-946(1997). 
  • “Features of valence band structure of TlAlF4”
    H. Mizoguchi, T. Omata, H. Kawazoe, S. Fujitsu, H. Hosono and N. Ueda,
    J. Phys.: Condens. Matter 8, 303-312(1996). 
  • “Optical absorption spectra and the nature of conduction carriers of hole-doped Sr1+xLa1-xFeO4”
    T. Omata, H. Ikawa, S. Fujitsu, H. Hosono, N. Ueda and H. Kawazoe,
    Solid State Commun. 97(5), 411-415(1996). 
  • “Electrical transport properties of hole-doped Sr1+xLa1-xCrO4+δ”
    T. Omata, T. Kawano, H. Ikawa, T. Sasamoto, H. Hosono, H. Mizoguchi and H. Kawazoe,
    J. Ceram. Soc. Jpn. 103(11), 1112-1116(1995).
  • “K2NiF4型La2-xSrxMnO4+δの合成と電気的性質”
    小俣孝久, 星野進, 井川博行, 笹本忠,
    J. Ceram. Soc. Jpn. 103(12), 1297-1301(1995).
  • “Generation of electron carriers in insulating thin film of MgIn2O4 spinel by Li+ implantation”
    H. Kawazoe, N. Ueda, H. Un’no, T. Omata, H. Hosono and H. Tanoue,
    J. Appl. Phys. 76, 7935-7941 (1994). 
  • “Electronic structure of hole-doped Sr1+xLa1-xFeO4 studied by UPS and XAS”
    T. Omata, K. Ueda, H. Hosono, T. Miyazaki, S. Hasegawa, N. Ueda and H. Kawazoe,
    Phys. Rev. B 49, 10200-10205(1994).
  • “Electrical and magnetic properties of hole-doped Sr1+xLa1-xFeO4”
    T. Omata, K. Ueda, H. Hosono, M. Katada, N. Ueda and H. Kawazoe,
    Phys. Rev. B 49, 10194-10199 (1994). 
  • “New ultraviolet-transparent electroconductive oxide, ZnGa2O4 spinel”
    T. Omata, N. Ueda, K. Ueda and H. Kawazoe,
    Appl. Phys. Lett. 64, 1077-1078(1994). 
  • “New oxide phase Cd2(1-x)Y2xSb2O7 with a wide band gap and high electrical conductivity”
    K. Yanagawa, Y. Ohki, N. Ueda, T. Omata, T. Hashimoto and H. Kawazoe,
    Jpn. J. Appl. Phys. 33, L238-240(1994). 
  • Preparation of Cd1-xYxSb2O6 thin film on glass substrate by radio frequency sputtering”
    K. Yanagawa, Y. Ohki, T. Omata, H. Hosono, N. Ueda and H. Kawazoe,
    Appl. Phys. Lett. 65, 406-408(1994). 
  • “Preparation of oxygen excess SrLaFeO4+δ and its electrical and magnetic properties”
    T. Omata, K. Ueda, N. Ueda, M. Katada, S. Fujitsu, T. Hashimoto and H. Kawazoe,
    Solid State Commun. 88, 807-811(1993). 
  • “New oxide phase with wide band gap and high electroconductivity CdGa2O4 spinel”
    T. Omata, N. Ueda, N. Hikuma, K. Ueda, H. Mizoguchi, T. Hashimoto and H. Kawazoe,
    Appl. Phys. Lett. 62, 499-500(1993). 
  • “Preparation of MgIn2O4 thin films on glass substrate by RF-sputtering”
    H. Un’no, N. Hikuma, T. Omata, N. Ueda, T. Hashimoto and H. Kawazoe,
    Jpn. J. Appl. Phys. 32, L1260-1262(1993). 
  • “New oxide phase Cd1-xYxSb2O6 with a wide band gap and high electrical conductivity”
    K. Yanagawa, Y. Ohki, N. Ueda, T. Omata, T. Hashimoto and H. Kawazoe,
    Appl. Phys. Lett. 63, 3335-3337(1993). 
  • “New oxide phase with wide band gap and high electroconductivity, MgIn2O4”
    N. Ueda, T. Omata, N. Hikuma, K. Ueda, H. Mizoguchi, T. Hashimoto and H. Kawazoe,
    Appl. Phys. Lett. 61, 1954-1955(1992).