2007 Fiscal Year Final Research Report Summary
Synthesis of hybrid nano-structured ZnO crystal by nanoparticle-assisted pulsed laser deposition and their application
| Project/Area Number |
18360151
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Kyushu University |
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Principal Investigator |
OKADA Tatsuo Kyushu University, Faculty of Information Science and Electrical Engineering, Department of Electrical and Electronic Systems Engineering, Professor (90127994)
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| Project Period (FY) |
2006 – 2007
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| Keywords | ZnO / nanowires / nanorods / field emission / nano-laser |
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| Research Abstract |
The aim of this project is to establish the basis for the development of electro-optic devices using nano-structured ZnO crystals which are synthesized by a newly-developed nanoparticle- assisted pulsed-laser deposition method. The subjects and the achievements are summarized as follows.
1) Controlled growth of ZnO nanowires We have succeeded in synthesizing vertically-aligned and horizontally- aligned ZnO nanowires using pre-annealed c-cut sapphire and a-cut sapphire substrates, respectively. It was found that the surface density of the nanowires can be controlled by changing the laser fluence and repetition rate for laser ablation.
2) Field emission from nanowires It was confirmed that the vertically-aligned ZnO nanowires have a capability of field emission and a visible light emitting device are fabricated using a vertically-aligned ZnO nanowire field emitter.
2) Handling of nanowires In order to observe the photoluminescence from a single ZnO nanowire, a handling technique for ZnO nanowires was developed. The nanowires were removed from the growth substrate by ultra-sonication in ethanol and single nanowire was collected onto a pair of microelectrodes by dielectrophoresis force.
3) Laser action in single ZnO nanowire When single nanowire was excited by ns-pulse at 355 nm, laser action with a help of micro-cavity effect in the nanowire was observed. A threshold excitation power of 13.6 mW per single nanowire was obtained.
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[Journal Article] Density-Controlled Growth of ZnO Nanowires Via Nanoparticle-Assisted Pulsed-Laser Deposition and Their Optical Properties2008
Author(s)
R., Guo, J., Nishimura, M., Matsumoto, M., Higashihata, D., Nakamura, T., Okada
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Journal Title
Jpn. Appl. Phys. 47
Pages: 741-745
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Substrate effects on ZnO nanostructure growth via nanoparticle-assisted pulsed-laser deposition2008
Author(s)
R., Guo, J., Nishimura, M., Matsumoto, M., Higashihata, D., Nakamura, T., Okada
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Journal Title
Appl. Surf. Sci 254
Pages: 3100-3104
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Aligned Growth of ZnO Nanowires and Lasing in Single ZnO Nanowire Optical Cavities2008
Author(s)
R., Guo, J., Nishimura, M., Matsumoto, M., Higashihata, D., Nakamura, J., Suehiro, T., Okada
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Journal Title
Appl. Phys. B 90
Pages: 539-542
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Controlled Growth of ZnO Nanowires by Nanoparticle-Assisted Laser Ablation Deposition2008
Author(s)
T., Okada, R., Guo, J., Nishimura, M., Matsumoto, M., Higashihata, D., Nakamura
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Journal Title
Proc. SPIE 6895
Pages: 68950S
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Optical characteristics of ZnO nanowires synthesized by nanoparticle-assisted deposition and their application to sensors2007
Author(s)
T., Okada, M., Ueda, J., Nishimura, J., Guo, M., Higashihata, J., Suehiro
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Journal Title
Proc 6474
Pages: 647427-1-8
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Vertically aligned growth of ZnO nanonails by nanoparticles-assisted pulsed-laser ablation deposition2007
Author(s)
R., Guo, J., Nishimura, M., Ueda, M., Higashihata, D., Nakamura, T., Okada
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Journal Title
Appl. Phy. 89
Pages: 141-144
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Dielectro- phoretic fabrication and characterization of a ZnO nanowire-based UV photosensor2006
Author(s)
J., Suehiro, N., Nakagawa, S., Hidaka, M., Ueda, K., Imasaka, M., Higashihata, T., Okada, M., Hara
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Journal Title
Nanotechnology 17
Pages: 2567-2573
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Controlled growth of ZnO nanowires by nanoparticle-assisted laser ablation deposition2008
Author(s)
Tatsuo, Okada, Ruiqian, Guo, Jun, Nishimura, Masato, Matsumoto, Mitsuhiro Higashihata, Daisuke, Nakamura
Organizer
SPIE Photonic West
Place of Presentation
San. Jose, USA.
Year and Date
20080100
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Synthesis of Vertically-aligned ZnO Nanowires by Nanoparticle- Assisted Pulsed Laser Deposition2008
Author(s)
Tatsuo, Okada, Ruqian, Guo, Jun, Nishimura, Masato, Matsumoto, M., Higashihata, D., Nakamura
Organizer
Asia Pacific Laser Symposium
Place of Presentation
Nagoya
Year and Date
20080100
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Catalyst-Free Synthesis of Vertically-Aligned ZnO Nanowires by Nanoparticle-Assisted Pulsed Laser Deposition2007
Author(s)
R. Q., Guo, J., Nishimura, M., Matsumoto, D., Nakamura , T., Okada
Organizer
Conference on. Laser Ablation
Place of Presentation
Tenerife, Spain
Year and Date
20070900
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Vertically Aligned Growth of ZnO Nanonails by Nanoparticle-Assisted Pulsed-Laser Ablation Deposition2007
Author(s)
R. Q., Guo, J., Nishimura, M., Ueda, M., Higashihata, D., Nakamura, T., Okada
Organizer
Conference on Laser and Electro-Optics Pacific Rim
Place of Presentation
Seoul, Korea
Year and Date
20070800
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Optical Characteristics of ZnO Nanowires Synthesized Nanoparticle- Assisted Deposition and Their Application to Sensors2007
Author(s)
Tatsuo, Okada, Makoto, Ueda, Jun, Nishimura, Ruiqian, Guo, Mitsuhiro, Higashihata, Junya, Suehiro
Organizer
SPIE Photonic West
Place of Presentation
San Jose, USA.
Year and Date
20070100
Description
「研究成果報告書概要(欧文)」より
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[Presentation] ynthesis of Nano-Structured Materials by Laser-Ablation and Their Application to Sensors2006
Author(s)
Tatsuo, OKADA, Makoto, Ueda, Jun, Nishimura, Mitsuhiro, Higashihata, Kimihide, Imasaka, Junya, Suehiro
Organizer
E-MRS
Place of Presentation
Nice
Year and Date
20060500
Description
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