Kyushu University Academic Staff Educational and Research Activities Database
List of Presentations
Yoshifumi Ikoma Last modified date:2019.08.26

Assistant Professor / Advanced Materials Physics / Department of Materials Science and Engineering / Faculty of Engineering


Presentations
1. Yoshifumi Ikoma, Zenji Horita, Structural and Functional Properties of Ultrafine-Grained Si Produced by High-Pressure Torsion, The 10th Pacific Rim International Conference on Advanced Materials and Processing (PRICM10), 2019.08.
2. A. Iwasaki,M. Muta,M. Arita,Y. Ikoma,M. Mukaida, The crystal nature of RE214 thin films depending on different temperature and oxygen pressure conditions, 日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部共催令和元年度合同学術講演大会, 2019.06.
3. Yoshifumi Ikoma, Bumsoo Chon, Terumasa Yamasaki, Katsuhiko Saito, Qixin Guo, Martha R. McCartney, David J. Smith, Zenji Horita, Microstructural and Optical Properties of Nanograined Si Processed by High-Pressure Torsion
, The 5th International Conference on Nanomechanics and Nanocomposites (ICNN5), 2018.08.
4. Yoshifumi Ikoma, Terumasa Yamasaki, Katsuhiko Saito, Qixin Guo, Zenji Horita, Production of bulk nanograined Si by high-pressure torsion at various pressures, TMS2018 147th Annual Meeting & Exhibition, 2018.03.
5. Kazuki Kumano, Yoshifumi Ikoma, Kaveh Edalati, Katsuhiko Saito, Qixin Guo, Zenji Horita, Thermal effects on the formations of Si and Ge metastable phases during HPT processing, International Workshop on Giant Straining Process for Advanced Materials (GSAM2017), 2017.09.
6. Yoshifumi Ikoma, Kazuki Kumano, Kaveh Edalati, Martha R. McCartney, David J. Smith, Zenji Horita, TEM observations of Ge processed by high-pressure torsion, International Workshop on Giant Straining Process for Advanced Materials (GSAM2017), 2017.09.
7. Masaki Mito, Kazuma Nakamura, Hiroyuki Deguchi, Hiroki Adachi, Tohru Yamasaki, Hideaki Iwaoka, Yoshifumi Ikoma, Zenji Horita, Effects of Giant Shear Strain of Single-Element Superconducting Rhenium, The 15th International Conference on Advanced Materials (IUMRS-ICAM2017), 2017.08.
8. Bumsoo Chon, Yoshifumi Ikoma, Masamichi Kohno, Junichiro Shiomi, Molly R. McCartney, David J. Smith, Zenji Horita, Nanostructure and Electrical Properties of Bulk Nanocrystalline Si Produced by High-Pressure Torsion, The 15th International Conference on Advanced Materials (IUMRS-ICAM2017), 2017.08.
9. Sivasankaran Harish, Mitsuru Tabara, Yasuyuki Takata, Yoshifumi Ikoma, Zenji Horita, Masamichi Kohno, Thermal Transport Characteristics of Semiconductors Subjected to High Pressure Torsion, The 15th International Conference on Advanced Materials (IUMRS-ICAM2017), 2017.08.
10. Yoshifumi Ikoma, Kazuki Kumano, Bumsoo Chon, Kaveh Edalati, Martha R. McCartney, David J. Smith, Zenji Horita, Microstructure Analysis of Bulk Nanograined Germanium Obtained by High-Pressure Torsion: Temperature Dependence, The 15th International Conference on Advanced Materials (IUMRS-ICAM2017), 2017.08.
11. Yoshifumi Ikoma, Kazuki Kumano, Bumsoo Chon, Kaveh Edalati, Martha R. McCartney, David J. Smith, Zenji Horita, HRTEM observations of nanograined germanium produced by high-pressure torsion, The 7th International Conference on Nanomaterials by Severe Plastic Deformation, 2017.07.
12. Yoshifumi Ikoma, Formation of nanograined Ge processed by severe plastic deformation
, 2017 International Symposium on Advanced Materials and Optoelectronics, 2017.03.
13. Bumsoo Chon, Yuta Fukushima, Yoshifumi Ikoma, Zenji Horita, Electrical characteristics of bulk nanocrystalline Si processed by high-pressure torsion, 9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM9), 2016.08.
14. Yoshifumi Ikoma, Yoshimasa Ejiri, Katsuhiko Saito, Qixin Guo, Zenji Horita, Production of nanograined ZnTe by severe plastic deformation under high pressure, 9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM9), 2016.08.
15. Yoshifumi Ikoma, HPT processing of germanium at cryogenic temperature, International Workshop on Giant Straining Process for Advanced Materials (GSAM2016), 2016.07.
16. Bumsoo Chon, Masamichi Kohno, Junichiro Shiomi, Yoshifumi Ikoma, Zenji Horita, Investigation of electrical resistivities of n-type Si with different doping rates after processing by high-pressure torsion, International Workshop on Giant Straining Process for Advanced Materials (GSAM2016), 2016.07.
17. Bumsoo Chon, 生駒 嘉史, 堀田善治, Electrical characteristics of bulk nanocrystalline Si processed by high-pressure torsion, 日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部共催平成28年度合同学術講演大会, 2016.06.
18. Yoshifumi Ikoma, Takamitsu Toyota, Katsuhiko Saito, Qixin Guo, Zenji Horita, Production of Nanograined Ge Using Severe Plastic Deformation under High Pressure, TMS2016 145th ANNUAL MEETING & EXHIBITION, 2016.02.
19. Yoshifumi Ikoma, Bulk nanostructured semiconductor materials processed by SPD, International Root Technology Seminar, 2016.01.
20. Yoshifumi Ikoma, Introduction to severe plastic deformation, International Root Technology Seminar, 2016.01.
21. Yoshifumi Ikoma, Introduction to vacuum science and thin film growth technique,
Nanodots, nanowires, and nanopores, International Root Technology Seminar, 2016.01.
22. Yoshifumi Ikoma, Katsuhiko Saito, Qixin Guo, Zenji Horita, Formation of metastable phases and nanograined silicon by severe plastic deformation under high pressure, 11th China SoG Silicon and PV Power Conference, 2015.11.
23. Yuta Fukushima, Kaveh Edalati, Yoshifumi Ikoma, David J. Smith, Zenji Horita, Observation of HPT-processed nanocrystalline silicon, International Workshop on Giant Straining Process for Advanced Materials (GSAM2015), 2015.09.
24. Y. Ikoma, Formation of metastable phases and nanograins of Si and Ge by high-pressure torsion, International Workshop on Giant Straining Process for Advanced Materials (GSAM2015), 2015.09.
25. Y. Fukushima, K. Edalati, Y. Ikoma, Z. Horita, D. J. Smith, High Resolution TEM Observation of Nanocrystalline Silicon Fabricated by High Pressure Torsion (HPT), Microscopy & Microanalysis 2015 Meeting (M&M 2015), 2015.08.
26. Yoshifumi Ikoma, Phase transformation and nanograin formation of semiconductor materials by high-pressure torsion, 2015 International Symposium on Advanced Materials and Optoelectronics, 2015.01.
27. Yoshifumi Ikoma, Takamitsu Toyota, Yoshimasa Ejiri, Kazunori Hayano, Katsuhiko Saito, Qixin Guo, Zenji Horita, Formation of metastable phases in germanium by high-pressure torsion, The 6th International Conference on Nanomaterials by Severe Plastic Deformation (NanoSPD6), 2014.07.
28. Y. Ikoma, K. Eladati, K. Hayano, K. Saito, Q. Guo, Z. Horita, Formation of Metastable Phases of Silicon Processed by High-pressure Torsion, TMS 2014 143rd Annual Meeting & Exhibition, 2014.02.
29. Kaveh Eladati, Takeshi Daio, Yoshifumi Ikoma, Makoto Arita, Zenji Horita, Graphite to Diamond Phase Transformation by High-pressure Torsion, TMS 2014 143rd Annual Meeting & Exhibition, 2014.02.
30. EDALATI KAVEH, 大尾 岳史, 生駒 嘉史, 有田 誠, 堀田 善治, Graphite to Diamond Transition by High-Pressure Torsion, 日本金属学会2013年秋期(第153回)講演大会, 2013.09.
31. Yoshifumi Ikoma, Pulsed supersonic jet CVD: thin films, nanopores, and nanowires, 2013 International Workshop on Novel Materials and Devices, 2013.09.
32. EDALATI KAVEH, Takeshi Daio, Yoshifumi Ikoma, Makoto ARITA, Zenji Horita, Direct formation of diamond-like carbon from graphite by high-pressure torsion, International Conference on Diamond and Carbon Materials, 2013.09.
33. Yoshifumi Ikoma, Kazunori Hayano, EDALATI KAVEH, Katsuhiko Saito, Qixin Guo, Zenji Horita, Production of Nanograined Silicon Using High-pressure Torsion, 8th Pacific Rim International Congress on Advanced Materials and Processing (PRICM-8), 2013.08.
34. Yoshifumi Ikoma, Yuta Nishino, Hirofumi Sakita, Nanopore Formation on SOI(100) by CH3SiH3 Pulse jet CVD: SiC Growth Temperature Dependence, The 8th International Forum on Advanced Materials Science and Technology (IFAMST-8), 2012.08.
35. Microscopic observation of Nanopores formed in SIMOX (100) utilizing methylsilane pulse jet CVD.
36. Self-assembled DNA networks on Si(100) observed by contact-mode AFM.
37. Photo-electrochemical properties of photocatalytic titanium dioxide films prepared by RF magnetron sputtering.
38. Quantitative nanoscale measurements using SPM: Modeling and simulations.
39. Position-controlled formation of Si nanopores by chemical vapor deposition of SiC/SOI(100).
40. Fabrication of nanopores utilizing SiC/Si(001) heteroepitaxial growth on SOI substrates: Nanopore density control.
41. Formation of nanopores utilizing SiC heteroepitaxial growth on SOI (100): Pit faced orientation.
42. New approach to formation of nanopore on SOI: SiC/Si heteroepitaxial growth by supersonic jet CVD.
43. SiC/Si multilayer nanostructures by CH3SiH3 supersonic jet CVD with a hot filament.
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47. Formation of SiC/Si Multilayer Structures on Si(100) by Supersonic Free Jets of Single Gas Source CH3SiH3
Y. Ikoma R. Ohtani and T. Motooka
International Conference on Silicon Carbide and Related Materials 2003
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