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Affiliation Department etc. |
Department of Physical Science and Engineering
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Title |
Professor |
ICHIKAWA Yo
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Graduating School
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-1981.03
Nagoya Institute of Technology Faculty of Engineering Graduated
Graduate School
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-1986.03
Osaka University Graduate School, Division of Engineering Doctor's Course Completed
Degree
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Osaka University - Mster of Engineering
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Osaka University - Doctor of Engineering
Field of expertise (Grants-in-aid for Scientific Research classification)
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Optical engineering, Photon science
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Nano/Microsystems
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Thin film/Surface and interfacial physical properties
Research Career
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study on synthesis of thinfilm materials for ultraviolet and blue emission
Collaboration in Japan Cooperative Research
Project Year： 2012.04 - Now
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Study on nano-scale control using laser light
Individual (not selected)
Project Year： -
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Process of thin films on ceramics materials
(not selected)
Project Year： -
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Preparation and sensor-application of nanostructures
(not selected)
Project Year： -
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Study on Thin Film Processing
Individual (not selected)
Project Year： -
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Study on Physics and Applications of Electronic Materials with Lowered Dimension
Individual (not selected)
Project Year： -
Papers
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Micro-Modulations of Titanium Oxide Coatings Formed Using a Femtosecond Laser
T. Osuga and Y. Ichikawa
Nanomedicine & Nanotchnology Open Access ( MEDWIN PUBLISHERS ) 2 ( 1 ) 000113 2017.02 [Refereed]
Research paper (scientific journal) Multiple Authorship
Highly useful microstructures are required in order to enhance the properties of titanium oxide (TiO2) coatings, so as to substantially increase the surface and underlayer surface areas. Along with coating deposition techniques, femtosecond laser irradiation has high capability to control micro-modulations consisting of mesopores and microspheres, with no
unexpected damage due to thermal expansion. In this study, phase contrast microscopy (PCM) is employed in
conjunction with differential-emphasis and contrast-enhancement image-processing techniques. This approach is confirmed to allow precise identification of the refractive index modulation generated in the TiO2 coatings. The effects of the laser output per pulse (5-0 μJ) and the pulse number (1-1000) on the TiO2-coating ablation craters formed by the femtosecond laser irradiation are also investigated. The double ridges are composed of inner and outer crater edges, the clarity R of which is characterized by the difference between the inner and outer diameters. This value is distinct and increases with increasing laser output for single-pulse irradiation. For high-pulse-number irradiation, the superposition of the collapsed circles created by multiple fluctuating pulses decreases R. Differential-emphasis PCM images, which
emphasize the difference in image intensity between adjacent image pixels, facilitate identification of surface periodic structures in ablation craters formed by five pulses or less. Further, contrast-enhanced PCM images are found to reveal microspheres mechanically propelled by the laser beam from the interiors to the peripheries of the ablation craters. The micro-modulations in the TiO2 coatings formed by the emtosecond laser irradiation and revealed by the PCM images are expected to modify the nano-adsorbency of this material for more effective use in water treatments, by increasing the coating surface areas. -
Direct growth of densely aligned ZnO nanorods on graphene
M. Honda, R. Okumura, Y. Ichikawa
Japanese Journal of Applied Physics 55 ( 8 ) 080301 2016.06 [Refereed]
Research paper (scientific journal) Multiple Authorship
グラフェン上へのZnOナノロッドの直接配向成長に関わる研究成果である。ZnOナノロッドは種層上に成長することが知られているが，物理的蒸着法，化学的蒸着法を持ってしても種層形成段階でグラフェンは消滅して，直接的な配向成長は無理であった。我々はグラフェンに適度な欠陥があるときにZnOナノロッドが水熱合成法で成長することを見出した。
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Properties of industrial boiler ash as sand replacement and thermal improvement in aerated concrete
E. Aminudin, D. M. Fadhil, M. W. Hussin, I. Kenzo, P. Mohanadoss and Y. Ichikawa
Malaysian Journal of Civil Engineering 27 145 - 159 2015.10 [Refereed]
Research paper (scientific journal) Multiple Authorship
火力発電所で発生する”灰”のコンクリート用砂代用材料についての効能を調べた。特に温度特性に優れた性能があることを見出した。
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Size controlled ZnO nanoparticles synthesized by liquid phase deposition and polymer hybridization
Y. Tabata, T. Sakai, N. Hiroshiba and Y. Ichikawa
Transactions of the Materials Research Society of Japan 39 ( 3 ) 313 - 315 2015.03 [Refereed]
Research paper (scientific journal) Multiple Authorship
液相成長でのＺｎＯナノ粒子のサイズ、形状制御に関する研究。高分子を融合させることで、結晶の成長方向を制御し、球状成長に成功した。
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Simple synthesis conditions of WO3 hydrate nanorods by solvothermal process
N. Hiroshiba, Y. Tabata, S. Yamauchi and Y. Ichikawa
Transactions of the Materials Research Society of Japan 39 ( 4 ) 423 - 425 2015.03 [Refereed]
Research paper (scientific journal) Multiple Authorship
オートクレーブを用いた液相成長で、従来困難とされていたＷＯ３ナノ結晶の合成に成功した。しかしながら、合成される温度範囲は10℃程度と狭いことも判明した。
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Fabrication of Nanosized Structures on Nafion Membranes by Thermal Nanoimprinting
N. Hiroshiba, W. Yano, R. Okumura and Y. Ichikaa
IEICE Trans. Electron. E98-C ( 2 ) 133 - 135 2015.02 [Refereed]
Research paper (scientific journal) Multiple Authorship
ナフィオンは表面活性度の低いイオン伝導性高分子として知られている。本研究では、表面の活性度を上げ、電極形成等の応用展開を促進させるため、熱ナノインプリント法で表面へのナノ構造の形成を試み、成功した。
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Fabrication of Ionic Polymer-Metal Composite Actuators by Dry Process and its Device Properties
W. Yano, T. Ito, N. Hiroshiba and Y. Ichikawa
Journal Vacuum Society of Japan 57 ( 11 ) 434 - 436 2014.11 [Refereed]
Research paper (scientific journal) Multiple Authorship
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Broadband terahertz spectroscopy of polypropylenes with different tacticities
S. Ariyoshi, N. Hiroshiba, Y. Tanzawa, Y. Ichikawa and J. Bae
Mterials Research Express 1 ( 4 ) 045303 2014.11 [Refereed]
Research paper (scientific journal) Multiple Authorship
ポロプロピレンの作成条件がテラヘルツ分光スペクトルに現れる違いを示唆。高分子材料の結晶状態の評価法の提案。
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Plane-direction Dependence of Growth Behavior of ZnO Nanorods Grown on Sapphire Substrate
57 ( 5 ) 1 - 3 2014.05 [Refereed]
Research paper (scientific journal) Multiple Authorship
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Metal–organic decomposition synthesis of tungsten oxide nanoparticles and evaluation of visible-light-driven photocatalytic ability
N. Hiroshiba, E. Inoko, W. Yano and Y. Ichikawa
Japanese Journal of Applied Physics 53 05FU01 - 05FU04 2014.05 [Refereed]
Research paper (scientific journal) Multiple Authorship
有機金属堆積法から作製したWO3ナノ粒子の形成、処理条件の光触媒効果への影響を調べた。
Presentations
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The effect of annealing graphene in O2 and N2 flow
F. Tokuda, M. Honda and Y. Ichikawa
International Conference on Nanoscience and Nanotechnology 2017 (University Technology MARA, Shah Alam, Selangor, Malaysia) 2017.02 - 2017.02 NANO-SciTech Centre, University Technology MARA
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Room temperature growth of ZnO nanorods in aueous solution
H. Tateyama, Q.-Y Zhang and Y. Ichikawa
International Conference on Nanoscience and Nanotechnology 2017 (University Technology MARA, Shah Alam, Selangor, Malaysia) 2017.02 - 2017.02 NANO-SciTech Centre, University Technology MARA
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Utilization of Fly Ash (FA) for Energy Saving to Co2 Reduction
Knezo Iwao, Mitsuhiro Honda, Yo Ichikawa
The 5th Global Conference on Materials Science and Engineering (台湾台中市) 2016.11 - 2016.11 CMSE commitee
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Effect of ZnO seed layers on ZnO Nanorod growth
Qiyan Zhang, Mitsuhiro Honda, Yo Ichikawa
The 9th International symposium on photonics and optoelectronics (SOPO2016) (中国西安市) 2016.08 - 2016.08 SOPO Organizing Committee
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Brightness enhancement of the AC Power Electroluminescence Using ZnO nanorods
Qiyan Zhang, Mitsuhiro Honda, Yo Ichikawa
The 9th International symposium on photonics and optoelectronics (SOPO2016) (中国西安市) 2016.08 - 2016.08 SOPO Organizing Committee
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Brightness enhancement of the dispersion-type inorganic EL using ZnO nanorods
Qiyan Zhang1, Yo Ichikawa, Mitsuhiro Honda, Toshifumi Satoh
The 63rd JSAP Spring Meeting (Ookayama Campus, Tokyo Institute of Technology) 2016.03 - 2016.03 Japan Society of Applied Physics
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Direct growth of vertically-oriented ZnO nanorods on graphene
Fuyuki Tokuda, Mitsuhiro Honda, Ryuji Okumura and Yo Ichikawa
The 63rd JSAP Spring Meeting (Ookayama Campus, Tokyo Institute of Technology) 2016.03 - 2016.03 Japan Society of Applied Physics
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Effect of oxygen in target on surface morphology of GaN thin film by PLD
Y. Kondo, Q. -Y. Zhang, A. Mochizuki, M. Kikuchi and Y. Ichikawa
第25回日本MRS年次大会 (横浜情報文化センターホール) 2015.12 - 2015.12 日本MRS
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Powder electroluminescent device using graphene as a transparent electrode
Q. -Y. Zhang, Y. Kondo, Y. Ichikawa and T. Satoh
第25回日本MRS年次大会 (横浜市波止場会館) 2015.12 - 2015.12 日本MRS
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Auger and Secondary Electron Emissions fron Single LAyer of Graphene
K. Goto, Y. Ichikawa and W. Kanematsu
Atomic Level Characterizations for New Materials and Devices '15 (島根県松江市くにびきメッセ) 2015.10 - 2015.10 学振141委員会