Presentations -
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A method to prepare size-controlled spherical nano/micro particles by pulsed laser ablation using inertial effects
2024.9
Event date： 2024.9 - 2024.10
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Study on Collision Process of Opposing Unsteady Supersonic Jets and Shock Waves
akira Uno*, Hiroshi Fukuoka, Atsushi Suda, and Ikurou Umezu
9th Asian Joint Workshop on Thermophysics and Fluid Science (AJWTF2022 2022.11
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Study on Collision Process of Opposing Unsteady Supersonic Jets and Shock Waves
Sakira Uno*, Hiroshi Fukuoka, Atsushi Suda, and Ikurou Umezu
2022.11
Event date： 2022.11
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Formation of nanoparticle complexes by double pulsed-laser-ablation
Keita Katayama, Ren Okada, Takahiro Nakamura, Yakehito Yoshida, Tamao Aoki-Matsumoto, Ikurou Umezu
16th International Conference on Laser Ablation (Shimane, Japan) 2022.4
Event date： 2022.4
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Formation of nanometer- and micrometer-sized fine particle complexes by pulsed laser ablation Invited
Ikurou Umezu, Yuma Ito, Keita Katayama, Takehito Yoshida, Hiroshi Fukuoka
MRM 2021 (Yokohama, Japan) 2021.12
Event date： 2021.12
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Effects of Compressible flow on Pulsed Laser Ablation under high background gas pressure
Hiroshi Fukuoka, Minoru Yaga, Toshio Takiya, Ikurou Umezu
11th INTERNATIONAL CONFERENCE ON LASER ABLATION (Playa del Carmen México )
Event date： 2011.11
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Controlling for crystal structures and morphologies of TiO2 nanoparticels de- posited by reactive pulsed laser ablation for photocatalyst applications
Takehito Yoshida, Nobuyasu Yagi, Akira Sugimura, Ikurou Umezu
11th INTERNATIONAL CONFERENCE ON LASER ABLATION (Playa del Carmen México)
Event date： 2011.11
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Effect of collision between plumes during pulsed laser ablation on plume ex- pansion dynamics and on formation of hybrid nanoparticles
Ikurou Umezu, Naomichi Sakamoto, Hiroshi Fukuoka, Yasuhiro Yokoyama, Koichiro Nobuzawa, Akira Sugimura
Event date： 2011.11
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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
I. Umezu, S. Okubo and A. Sugimura
MRS fall meeting
Event date： 2010.11 - 2010.12
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Synthesis of gallium nitride nanocrystallites by pulsed laser ablation in background gas of pure nitrogen
T. Yoshida, S. Kakumoto, A. Sugimura and I. Umezu
International Conference on Photo-excited Processes and Applications, ICPEPA7 (Denmark København)
Event date： 2010.8
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Strong mid-infrared optical absorption emerged by supersaturated sulfur doping in silicon wafer
I. Umezu, A. Kohno, J. M. Warrender, Y. Takatori, Y.Hirao, S. Nakagawa, A. Sugimura, S. Charnvanichborikarn, J. S. Williams and M. J. Aziz
30th International Conference on the Physics of Semiconductors
Event date： 2010.7
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Semiconductor nanocrystallites synthesized by pulsed laser ablation in reactive background gases and application to functional materials
T. Yoshida H. Toyoyama I. Umezu A. Sugimura
SemiconNano2009
Event date： 2009.8
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Formation of core-shell structured silicon nanoparticles by pulsed laser ablation
I. Umezu Y. Nakayama A. Sugimura
LAMP2009 -The 5th International Congress on Laser Advanced Materials Processing
Event date： 2009.6 - 2009.7
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Collective Transport in Silicon Nanocrystal Assembly Prepared by Laser Ablation Method
A. Sugimura, M. Gibo, M. Inada, T. Saitoh and I. Umezu
MRS fall meeting
Event date： 2008.12
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Synthesis of Ni-doped InTaO4 nanocrystallites by reactive pulsed laser ablation for application to visible-light-operating photocatalysts
T. Yoshida, H. Toyoyama, I. Umezu and A. Sugimura
6th International Conference on Photo-Excited Processes and Applications
Event date： 2008.9
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Evolution of energy transfer process between quantum dots of two different sizes during the evaporation of solvent
Wei Lü, Ikurou Umezu, Akira Sugimura
The 2nd Thailand Nanotechnology Conference (Phuket, Thailand)
Event date： 2008.8
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Trap state emission of water-soluble CdS nanocrystals
W. Lü, I. Umezu and A. Sugimura
2008 International Conference on Excitonic Processes in Condensed Matter (Kyoto, Japan)
Event date： 2008.6
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InTaO4-BASED NANO-STRUCTURES SYNTHESIZED BY REACTIVE PULSED LASER ABLATION
T. Yoshida, H. Toyoyama, I. Umezu and A. Sugimura
9th International Conference on Laser Ablation
Event date： 2007.9
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FORMATION OF SURFACE STABILIZED Si NANOCRYSTALLITES BY PULSED LASER ABLATION IN HYDROGEN BACKGROUND GAS
I. Umezu, I. Kondo and A. Sugimura
9th International Conference on Laser Ablation
Event date： 2007.9
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REACTION BETWEEN AMBIENT AND EJECTED TARGET MATERIAL DURING PULSED LASER ABLATION IN WATER
I. Umezu, H. Senoo and A. Sugimura
9th International Conference on Laser Ablation
Event date： 2007.9