Papers - UMEZU Ikurou
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Many body effect in photo-conductivity in InAs/GaAs self assembled quantum dots（共著）
M. Inada, K. Ohnishi, I. Umezu, P. O. Vaccaro and A. Sugimura
Mat. Res. Soc. Symp. Proc. 642, (2001)J3.3.2-J3.3.6 2001.11
Joint Work
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Effects of inter-dot electronic coupling on laser gain in InAs/GaAs quantum dot ensemble（共著）
A. Sugimura, K. Ohnishi, I. Tadamasa and I. Umezu
Mat.Res.Soc.Symp.Proc., 642, (2001)J5.5.1-J5.5.6， 2001.11
Joint Work
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Conduction-type control of Ge films grown on (NH4)2S-treated GaAs by molecular beam epitaxy（共著）
M. Inada, T. Fujishima, I. Umezu, A. Sugimura and S. Yamada
Journal of Crystal Growth 227-228, (2001)791-795 2001.11
Joint Work
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Photoluminescence from Nanoscale Si in a-SiOx matrix（共著）
I. Umezu, K. Yoshida, M. Inada and A. Sugimura，
Mat. Res. Soc Symp. Proc. 638, (2001)F5.19.1-F5.19.6 2001.11
Joint Work
Authorship：Lead author
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Effect of Non-equilibrium Pulsed Ejection of Si Species into Background Gas on the Formation of Si Nanocrystallite and Nanocrystal-film Reviewed
Ikurou Umezu, Shunto Okubo, Akira Sugimura
Mater. Res. Soc. Symp. Proc. 1305 2001.11
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Lateral photo-conductance via in-plane interdot tunneling in self-assembled InAs/GaAs quantum dot ensemble
Ohnishi K, Inada M, Umezu I, Sugimura A, Vaccaro PO
PROCEEDINGS OF THE 25TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, PTS I AND II 87 1063 - 1064 2001
Joint Work
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Lateral photo-conductance via in-plane inter-dot tunneling in self-assembled InAs/GaAs quantum dot ensemble（共著）
K. Ohnishi, M. Inada, I. Umezu, A. Sugimura and P. O. Vaccaro
Proc.25th Int. Conf. Phys. Semicond 1063 - 1064 2000.11
Joint Work
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correlation between Photoluminescence Intensity and Micro Structure in Amorphous Silicon Films Prepared by Reactive RF Sputtering（共著）
Umezu, T. Murota, M. Kawata, Y. Takashima, K.-i. Yoshida, M. Inada and A. Sugimura
Jpn. J. Appl. Phys. 39 Part2, (2000)L844-L846, 2000.11
Joint Work
Authorship：Lead author
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Optical Properties of Self-assembled InAs Quantum Dots Grown on GaAs(211)A Substrates（共著）
A. Sugimura, K. Ohnishi, I. Umezu and P. O. Vaccaro
Thin film solids 380, 97 - 100 2000.11
Joint Work
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Photoluminescence property of self-assembled InAs/GaAs quantum dots on GaAs(211)A at low coverage（共著）
K. Ohnishi, P. O. Vaccaro, K. Hara, I. Umezu and A. Sugimura
Mem. konan Univ., Sci Ser. 47(1), 21 - 29 2000.11
Joint Work
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Structure, optical absorption and electronic states of Zn+ ion implanted and subsequently annealed sol-gel anatase TiO2 films（共著）
K. Oyoshi, N. Sumi, I. Umezu, R. Souda, A. Yamazaki, H. Haneda and T. Mitsuhashi
Nuclear Instruments and Methods in Physics Research B 168/2, 221 - 228 2000.11
Joint Work
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Microstructure in a-SiOx prepared by RF sputtering method and its effect on radiative recombination mechanism（共著）
K. Yoshida, M. Inada, I. Umezu and A. Sugimura
Mem. konan Univ. , Sci. Ser. 47 (2) 119 - 132 2000.11
Joint Work
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Resonance Raman Scattering of Br2 Doped Single-Walled Carbon Nanotube Bundles
梅津郁郎
Mo. Cryst. and Liq. Cryst. 340, 757 - 762 2000.11
Single Work
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Journal of Non-Crystalline Solids 266-9（共著）
H. Kataura, Y. Kumazawa, N. Kojima, Y. Maniwa, I. Umezu, S. Masubuchi, S. Kazama, Y. Ohtsuka, S. Suzuki and Y. Achiba
Journal of Non-Crystalline Solids 266-9, 1029 - 1032 2000.11
Joint Work
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Correlation between photoluminescence intensity and micro structure in amorphous silicon films prepared by reactive RF sputtering
Umezu I, Murota T, Kawata M, Takashima Y, Yoshida K, Inada M, Sugimura A
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS 39 ( 8B ) L844 - L846 2000.8
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A comparative study of the photoluminescence properties of a-SiOx : H film and silicon nanocrystallites
Umezu I, Yoshida K, Sugimura A, Inokuma T, Hasegawa S, Wakayama Y, Yamada Y, Yoshida T
JOURNAL OF NON-CRYSTALLINE SOLIDS 266 1029 - 1032 2000.5
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Optical properties of single-wall carbon nanotubes
Kataura H, Kumazawa Y, Maniwa Y, Umezu I, Suzuki S, Ohtsuka Y, Achiba Y
SYNTHETIC METALS 103 ( 1-3 ) 2555 - 2558 1999.6
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Effects of thermal processing on photoluminescence of Si nanocrystallites prepared by pulsed laser ablation
Umezu I, Shibata K, Yamaguchi S, Sato H, Sugimura A, Yamada Y, Yoshida T
PROCEEDINGS OF THE FIFTH INTERNATIONAL SYMPOSIUM ON QUANTUM CONFINEMENT: NANOSTRUCTURES 98 ( 19 ) 40 - 48 1999
Joint Work
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Optical absorption and resonance Raman scattering of carbon nanotubes
Kataura H, Kumazawa Y, Kojima N, Maniwa Y, Umezu I, Masubuchi S, Kazama S, Zhao X, Ando Y, Ohtsuka Y, Suzuki S, Achiba Y
ELECTRONIC PROPERTIES OF NOVEL MATERIALS - SCIENCE AND TECHNOLOGY OF MOLECULAR NANOSTRUCTURES 486 328 - 332 1999
Joint Work
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Effects of thermal processes on photoluminescence of silicon nanocrystallites prepared by pulsed laser ablation
Umezu I, Shibata K, Yamaguchi S, Sugimura A, Yamada Y, Yoshida T
JOURNAL OF APPLIED PHYSICS 84 ( 11 ) 6448 - 6450 1998.12