Faculty Information, Institute for Chemical Research, Kyoto University   [ English | Japanese ]


MASAI, hirokazu

Division of Materials Chemistry - Inorganic Photonics Materials -
Assistant Professor

URL:
E-mail: masai_h@noncry.kuicr.kyoto-u.ac.jp
Tel: 0774-38-3131
Fax: 0774-33-5212
Academic career
Research field
    Current research
    Selected publications
    1. Masai, H.; Matsumoto, S.; Fujiwara, T.; Tokuda, Y.; Yoko, T., Photoluminescent properties of Sb-doped phosphate glass Journal of American Ceramics Society 95, 862-865 (2012)
    2. Masai, H.; Tanimoto, T.; Fujiwara, T.; Matsumoto, S.; Takahashi, Y.; Tokuda, Y.; Yoko, T., Fabrication of Sn-doped zinc phosphate glass using a platinum crucible Journal of Non-Crystalline Solids 358, 265-269 (2012)
    3. Tokuda, Y.; Nishioka, S.; Ueda, Y.; Koyanaka, H.; Masai, H.; Takahashi, M.; Yoko, T., Organic–inorganic hybrid titanophosphite proton conductive membranes with graded monomer conversion Solid State Ionics 206, 22-27 (2012)
    4. Masai, H.; Fujiwara, T.; Matsumoto, S.; Takahashi, Y.; Iwasaki, K.; Tokuda, Y.; Yoko, T., High Efficient White Light Emission of Rare Earth-Free MnO-SnO-ZnO-P2O5 Glass Journal of Ceramic Society of Japan 119, 726-730 (2011)
    5. Yoshida, K.; Masai, H.; Takahashi, Y.; Ihara, R.; Fujiwara, T., Fabrication of Sr0.5Ba0.5Nb2O6-precipitated microstructured ceramics for photocatalytic application Journal of Ceramic Society of Japan 119, 731-735 (2011)
    6. Masai, H.; Ueno, T.; Takahashi, Y.; Fujiwara, T., Precipitation of ZnO in the Al2O3-doped zincborate glass-ceramics Optical Materials 33, 1980-1983 (2011)
    7. Masai, H.; Ueno, T.; Takahashi, Y.; Fujiwara, T., Correlation between Surface-Crystallized ZnO and the Amount of Al2O3 in Borate-Based Glass-Ceramics Journal of American Ceramics Society 94, 2452-2457 (2011)
    8. Masai, H.; Fujiwara, T.; Matsumoto, S.; Takahashi, Y.; Iwasaki, K.; Tokuda, Y.; Yoko, T., White Light Emission of Mn-Doped SnO-ZnO-P2O5 Glass Containing No Rare Earth Cation Optics Letters 36, 2868-2870 (2011)
    9. Ando, M.; Takahashi, Y.; Iwasaki, K.; Masai, H.; Ihara, R.; Fujiwara, T., Fabrication and photoluminescent property of transparent nanocrystallized-glass in Li2O-ZnO-GeO2 system IOP Conf. Series: Materials Science and Engineering 18, 112002 (2011)
    10. Takahashi, Y.; Osada, M.; Masai, H.; Ihara, R.; Fujiwara, T., Nucleation and nanometric inhomogeneityin niobiogermanate glass: In-situ inelastic light scattering and TEM studies IOP Conf. Series: Materials Science and Engineering 18, 112009 (2011)
    11. Masai, H.; Takahashi, Y.; Fujiwara, T., Glass-Ceramics Containing Nano-Crystallites of Oxide Semiconductor Ceramic Materials 29-48 (2010)
    12. Takahashi, Y.; Fujie, N.; Osada, M.; Masai, H.; Ihara, R.; Fujiwara, T., Crystallization of Tungstenbronze-Type Ba2NaNb5O15 in High-Nb2O5-Content Glass: An Inelastic Light Scattering Study Journal of Applied Physics 108, [103519-1]-[103519-5] (2010)
    13. Takahashi, Y.; Ando, M.; Iwasaki, K.; Masai, H.; Fujiwara, T., Defect activation in willemite-type Zn2GeO4 by nanocrystallization. Applied Physics Letters 97, [071906-1]-[071906-3] (2010)
    14. Takahashi, Y.; Masai, H.; Osada, M.; Ihara, R.; Fujiwara, T., Formation of spherulite and Metastable Phase in Stoichiometric Ba2Si3O8 glass. Journal of Ceramic Society of Japan 118, 955-958 (2010)
    15. Takahashi, Y.; Iwafuchi, N.; Osada, M.; Masai, H.; Ihara, R.; Fujiwara, T., Inelastic light scattering from nanocrystallizing niobiotellurite glass: an insight into the metastable phase and phase-transition dynamics. Journal of Ceramic Society of Japan 118, 814-818 (2010)
    16. Masai, H.; Ueno, T.; Toda, T.; Takahashi, Y.; Fujiwara, T., Processing and photoluminescence properties of surface crystallized ZnO glass-ceramics. Journal of Non-Crystalline Solids 356, 3080-3084 (2010)
    17. Masai, H.; Kanamori, E.; Takahashi, Y.; Fujiwara, T., Surface crystallization of CaO-Bi2O3-B2O3-Al2O3-TiO2 glass using IR furnace. Journal of Non-Crystalline Solids 356, 2977-2979 (2010)
    18. Masai, H.; Ueno, T.; Takahashi, Y.; Fujiwara, T., Fabrication of surface crystallized glasses with α-Zn3B2O6 and their optical property. Journal of Non-Crystalline Solids 356, 2689-2692 (2010)
    19. Masai, H.; Toda, T.; Takahashi, Y.; Fujiwara, T., Fabrication of Bi-free TiO2 nano-crystallized glass. Journal of Non-Crystalline Solids 356, 2674-2676 (2010)
    20. Masai, H.; Takahashi, Y.; Fujiwara, T.; Matsumoto, S.; Yoko, T., High Photoluminescent Property of Low-Melting Sn-Doped Phosphate Glass. Applied Physics Express 3, [082102-1]-[082102-3] (2010)
    21. Masai, H.; Takahashi, Y.; Fujiwara, T.; Tokuda, Y.; Yoko, T., Precipitation of heterogeneous nanostructures: Metal nanoparticles and dielectric nanocrystallites. Journal of Applied Physics 108, [023503-1]-[023503-4] (2010)
    22. Takahashi, Y.; Masai, H.; Fujiwara, T.; Osada, M., Low-frequency inelastic light scattering of glassy Ba2TiGe2O8 during heating process. Key Engineering Materials 445, 225－228 (2010)
    23. Iwasaki, K.; Takahashi, Y.; Masai, H.; Fujiwara, T., Photoluminescence in Bazirite Crystal by Addition of Impurity ions. Key Engineering Materials 445, 221－224 (2010)
    24. Yamazaki, Y.; Masai, H.; Takahashi, Y.; Fujiwara, T., Thermal Property of BaO-TiO2-GeO2 glass and the crystallization behavior. Key Engineering Materials 445, 179－182 (2010)
    25. Iwafuchi, N.; Masai, H.; Takahashi, Y.; Fujiwara, T., Electro-optic measurement in glass ceramics with highly oriented crystalline layers Electronics Letters 46, 69-71 (2010)
    26. Masai, H.; Takahashi, Y.; Fujiwara, T.; Suzuki, T.; Ohishi, Y.., Correlation between NIR emission and bismuth radical species of Bi2O3-containing aluminoborate glass Journal of Applied Physics 106, [103523-1]-[103523-5] (2009)
    27. Yasunaga, H.; Masai, H.; Takahashi, Y.; Fujiwara, T., Pulsed laser induced nanostructure and thermal properties of bismuth borate glass Glass Technology; European Journal of Glass Science and technology 50, 288-292 (2009)
    28. Iwasaki, K.; Takahashi, Y.; Masai, H.; Fujiwara, T. , Blue photoluminescence, greenish-blue afterglow and their Ti-concentration dependence in rare　earth-free bazirite-type BaZr1-xTixSi3O9 Optics Express 17, 18054-18062 (2009)
    29. Takahashi, Y.; Masai, H.; Osada, M.; Fujiwara, T., Precursive stage of nanocrystallization in niobium oxide-containing glass Applied Physics Letters 95, [071909-1]-[071909-3] (2009)
    30. Takahashi, Y.; Masai, H.; Fujiwara, T., Nucleation tendency and crystallizing phase in silicate glasses: A structural aspect Applied Physics Letters 95, [071904-1]-[071904-3] (2009)
    31. Takahashi, Y.; Osada, M.; Masai, H.; Fujiwara, T., Crystallization and nanometric heterogeneity in glass: In situ observation of the boson peak during　crystallization. Physical Review B 79, [214204-1]-[214204-5] (2009)
    32. Takahashi, Y.; Osada, M.; Masai, H.; Fujiwara, T., Softer region at boundary of supercooled liquid-crystal in glassy fresnoite Applied Physics Letters 94, [241909-1]-[241909-3] (2009)
    33. Takahashi, Y.; Osada, M.; Masai, H.; Fujiwara, T., Structural heterogeneity and homogeneous nucleation of 1BaO-2SiO2 glass Applied Physics Letters 94, [211907-1]-[211907-3] (2009)
    34. Masai, H.; Suzuki, Y.; Takahashi, Y.; Mori, H.; Fujiwara, T., The correlation between the temperature of molten state and the SH intensity of　30BaO-15TiO2-55GeO2 crystallized glass Journal of the Ceramic Society of Japan 117, 671-674 (2009)
    35. Ohara, S.; Masai, H.; Takahashi, Y.; Fujiwara, T.; Kondo, Y.; Sugimoto, N., Space-selectively crystallized fiber with second-order optical nonlinearity for variable optical　attenuation Optics Letters 34, 1027-1029 (2009)
    36. Masai, H.; Takahashi, Y.; Fujiwara, T., Addition effect of SnO in optical property of Bi2O3-containing aluminoborate glass Journal of Applied Physics 105, [083538-1]-[083538-4] (2009)
    37. Masai, H.; Toda, T.; Ueno, T.; Takahashi, Y.; Fujiwara, T., ZnO Glass-Ceramics; an Alternative Way to Produce Semiconductor Materials Applied Physics Letters 94, [151908-1]-[151908-3] (2009)
    38. Masai, H.; Toda, T.; Takahashi, Y.; Fujiwara, T., Fabrication of Anatase Precipitated Glass-Ceramics Possessing High Transparency Applied Physics Letters 94, [151910-1]-[151910-3] (2009)
    39. Ogawa, R.; Masai, H.; Takahashi, Y.; Mori, H.; Fujiwara, T.; Komatsu, T., Crystallization behavior of BaO-TiO2-GeO2 glass thin film Key Engineering Materials 388, 149－152 (2009)
    40. Masai, H.; Iwafuchi, N.; Takahashi, Y.; Fujiwara, T.; Ohara, S.; Kondo, Y.; Sugimoto, N., Preparation of crystallized glass for application in fiber-type devices Journal of Materials Research 24, 288-294 (2009)
    41. Takahashi, Y.; Masai, H.; Fujiwara, T., Anomalous boson behavior and nanometric heterogeneity in glassy fresnoite Applied Physics Express 1, [121901-1]-[121901-3] (2008)
    42. Masai, H.; Fujiwara, T.; Mori, H., Effect of SnO addition on optical absorption of bismuth borate glass and photocatalytic property of the crystallized glass Applied Physics Letters 92, [141902-1]-[141902-3] (2008)
    43. Masai, H.; Mizuno, S.; Fujiwara, T.; Mori, H.; Komatsu, T., Fabrication of metal nanocluster and nanoparticles in the CaO-Bi2O3-B2O3-Al2O3-TiO2 glass by irradiation of XeCl pulsed laser Optics Express 16, 2614-2620 (2008)
    44. Ohara, S.; Masai, H.; Takahashi, Y.; Fujiwara, T.; Kondo, Y.; Sugimoto, N., Variable optical attenuation using space-selectively crystallized fiber with second-order optical nonlinearity Proceedings on 34th European Conference on Optical Communication Th.3.C.5 (2008)
    45. Ohara, S.; Masai, H.; Takahashi, Y.; Fujiwara, T.; Kondo, Y.; Sugimoto, N., Fabrication of BaO-TiO2-GeO2-SiO2 based glass fiber Journal of the Ceramic Society of Japan 116, 1083-1086 (2008)
    46. Iwafuchi, N.; Masai, H.; Takahashi, Y.; Fujiwara, T.; Ohara, S.; Kondo, Y.; Sugimoto, N., Crystallization behavior of optical fibers with multi layered structure for nonlinear optical devices Journal of the Ceramic Society of Japan 116, 1115-1120 (2008)
    47. Ogawa, R.; Masai, H.; Takahashi, Y.; Fujiwara, T., Formation of fresnoite-type Ba2TiGe2O8 crystallites in BaO-TiO2-GeO2 glass thin film and its optical nonlinearity Journal of the Ceramic Society of Japan 116, 1130-1133 (2008)
    48. Takahashi, Y.; Iwasaki, K.; Masai, H.; Fujiwara, T., Raman spectroscopic study of benitoite-type compounds Journal of the Ceramic Society of Japan 116, 1139-1142 (2008)
    49. Takahashi, Y.; Masai, H.; Fujiwara, T.; Kitamura, K.; Inoue, S., Afterglow in synthetic bazirite, BaZrSi3O9. Journal of the Ceramic Society of Japan 116, 357-360 (2008)
    50. Ogawa, R.; Masai, H.; Takahashi, Y.; Mori, H.; Fujiwara, T.; Komatsu, T., Fabrication of Ba2TiGe2O8 thin film with optical nonlinearity Japanese Journal of Applied Physics 46, 7145-7147 (2007)
    51. Masai, H.; Fujiwara, T.; Mori, H.; Benino, Y.; Komatsu, T., Dual layered surface crystallization of 30BaO-15TiO2-55GeO2 glass by stepwise heat treatment Journal of Applied Physics 101, [123505-1]-[123505-6] (2007)
    52. Masai, H.; Tsuji, S.; Fujiwara, T.; Benino, Y.; Komatsu, T., Structure and nonlinear optical properties of BaO-TiO2-SiO2 glass containing Ba2TiSi2O8 crystal Journal of Non-Crystalline Solids 353, 2258-2262 (2007)
    53. Masai, H.; Mizuno, S.; Fujiwara, T.; Benino, Y.; Komatsu, T.; Mori, H., Creation of locally selective mirror surface on 40BaO-40TiO2-20B2O3 glass by XeCl pulse laser irradiation Journal of Materials Research 22, 1270-1274 (2007)
    54. Masai, H.; Fujiwara, T.; Mori, H.; Komatsu, T., Fabrication of TiO2 nano-crystallized glass Applied Physics Letters 90, [081907-1]-[081907-3] (2007)
    55. Masai, H.; Fujiwara, T.; Benino, Y.; Komatsu, T.; Mori, H., Selective surface crystallization of non-stoichiometric 30BaO-15TiO2-55GeO2 glass Journal of Applied Physics 101, [033530-1]-[033530-4] (2007)
    56. Kakiuchida, H.; Takahashi, M.; Tokuda, Y.; Masai, H.; Yoko, T., Effects of Organic Groups on Structure and Viscoelastic Properties of Organic-Inorganic Polysiloxane Hybrid System Journal of Physical Chemistry B 111, 982-988 (2007)
    57. Masai, H.; Fujiwara, T.; Benino, Y.; Komatsu, T.; Mori, H., Large second-order optical nonlinearity in 30BaO-15TiO2-55GeO2 surface crystallized glass with strong orientation Journal of Applied Physics 100, [023526-1]-[023526-4] (2006)
    58. Kakiuchida, H.; Takahashi, M.; Tokuda, Y.; Masai, H.; Kuniyoshi, M.; Yoko, T., Viscoelastic and Structural Properties of a Phenyl-Modified Polysiloxane System with a Three Dimensional Structure Journal of Physical Chemistry B 110, 7321-7327 (2006)
    59. Masai, H.; Takahashi, M.; Tokuda, Y.; Yoko, T., Gel-melting method for preparation of organically-modified siloxane low-melting glasses Journal of Material Research 20, 1234-1241 (2005)
    60. Masai, H.; Takahashi, M.; Tokuda, Y.; Yoko, T., Enhancement of polycondensation reaction by diethyl ether-aqueous NaOH immiscible two phase liquid treatment of phenyl-modified polysiloxane glass Journal of the Ceramic Society of Japan 113, 259-262 (2005)
    61. Masai, H.; Takahashi, M.; Tokuda, Y.; Yoko, T., Effect of the organic groups on the formation of siloxane network through gel-melting method 20th International Congress on Glass, Proceedings [11.009-1]-[11.009-5] (2004)
    62. Kakiuchida, H.; Takahashi, M.; Masai, H.; Kuniyoshi, M.; Tokuda, Y.; Yoko, T., Relationship between viscoelastic properties and structure of organic-inorganic hybrid glass and supercooled liquid consisting of R4-mSiOm/2 units 20th International Congress on Glass, Proceedings [07.054-1]-[07.054-6] (2004)
    63. Kurahashi, T.; Hata, T.; Masai, H.; Kitagawa, H.; Shimizu, M.; Hiyama, T., Geminal dimetalation of alkenylidene-type carbenoids with silylboranes and diborons Tetrahedron 58, 6381-6395 (2002)
    64. Hata, T.; Kitagawa, H.; Masai, H.; Kurahashi, T.; Shimizu, M.; Hiyama, T., Geminal difunctionalization of alkenylidene-type carbenoids by using interelement compounds Angewandte Chemie International Edition 40, 790-792 (2001)
    65. Shimizu, M.; Mizuno, K.; Inamasu, N.; Masai, H.; Hiyama, T., A facile synthesis of 1,3-disilacyclohexanes Inorganica Chimica Acta 296, 231-235 (1999)

    Update: Apr 02,2012