2007 Fiscal Year Final Research Report Summary
Fabrication, functionalization, and exploration of polymer -based rancdevices
| Project/Area Number |
17201033
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Microdevices/Nanodevices
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| Research Institution | Osaka University |
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Principal Investigator |
KAWATA Satoshi Osaka University, Graduate school of Engineering, professor (30144439)
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| Project Period (FY) |
2005 – 2007
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| Keywords | Micro / nano devices / Nano materials / Annlied onties Onantum nntics |
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| Research Abstract |
We experimentally presented proof that several mechanical properties of polymer, such as elasticity, viscoelasticity, and glass transition temperature, are dependent on the size of the polymer in nano meter scale. To our knowledge, this result is the first report of the size -effect on mechanical property of nano materials. We fabricated nano spring made of 〜200 nm diameter poly (methylmethacrylate) nanowire by means of two-photon photopolymerization. We manipulated the fabricated nano spring in solution by laser trapping method, and measured the spring constant of the nano spring. We installed temperature controllable stage into our hand -made laser trapping system, which made it possible to change the temperature of the nano spring from about 200 to 400 K during spring constant measurement. First, we found that the elasticity of nano size polymer is 109 times smaller than that of the bulk of the same material. This giant elasticity is not related to degree of polymerization, or solve
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nt, but purely dependent on the size of polymer. We also observed that transition temperature of the polymer changes remarkably depending on the size of polymer. Actually, the transition temperature decreased more than 40 K when the size of the nano spring was decreased from 450 nm to 150 nm. The experimental data also suggest a novel functionality in polymer based nano devices, which is reversible temperature -switchable elasticity/viscoelasticity. The change of elasticity/viscoelasticity by transition temperature is actually intrinsic in any polymer materials, and so not surprising, though the glass transition temperature of bulk polymer is usually 〜370 K. However by designing the size of polymer structures at the nanoscale, it becomes possible to control the switching temperature, even at room temperature. We also developed new polymer materials functionalized by az o-benzene contained monomers. This polymer shows refractive index change and volume change by light irradiation. We fabricated three -dimensional photonic crystals by two-photon polymeriation, and demonstrated optical switching of photonic bandgaps. Since the refractive index and volume change is induced by photo -isomerization of azo-benzene derivative, the optical switching of photonic bandgaps is reversible. These novel mechanical and optical functions we have shown through this project are intrinsic to nano-sized polymers, and would lead to exploring future novel polymer-based nanodevices. Less
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Research Products
(50 results)
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[Journal Article] Multicolor polymer nanocomposites in situ synthesis and three -dimensional microstructures fabrication2008
Author(s)
Zhen-Bin, Sun, Xian-Zi, Dong, Wei-Qiang, Chen, Sana, Nakanishi, Xuan-Ming, Duan, Satoshi, Kawata
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Journal Title
Advanced Materials 20,5
Pages: 914
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Temperature effects on pinpoint photopolymerization and polymerized micronanostructures2008
Author(s)
Kenji, Takada, Koshiro, Kaneko, YuODong, Li, Satoshi, Kawata, Zi -Dai, Chen, Hong-Bo, Sun
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Journal Title
Applied Physics Letters 92
Pages: 041902
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Log-pile photonic crystal of CdS - polymer nanocomposites fabricated by combination of two -photon polymerization and in situ synthesis2007
Author(s)
Z.-B., Sun, X.-Z., Dong, S., Nakanishi, W.-Q., Chen, X.-M., Duan, S., Kawata
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Journal Title
Applied Physics A 86
Pages: 427
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Carbazole-based 1D and 2D hemicyanines : synthesis, two -photon absorption properties and application for two -photon photopolvmerization 3D lithography2007
Author(s)
J., Gu, W., Yulan, W.-Q., Chen, X.-Z., Dong, X. M., Dean, S., Kawata
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Journal Title
New JoUrna 1 of Chemistry 31
Pages: 63
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Marcel Dekker Inc2006
Author(s)
S., Kawata, Y., Inouye, H. B., Sun
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Journal Title
"Encyclopedic Handbook of Integrated Optics," K Iga and Y Kokubun eds
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Method for the characterization of deformable membrane mirrors2005
Author(s)
Martin, Booth, Tony, Wilson, Hong-Bo, Sun, Taisuke, Ota, Satoshi, KaWata
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Journal Title
Applied Physics 44, 24
Pages: 5131
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Direct laser writing defects in holographic lithography -created photonic lattice2005
Author(s)
Sun, HB, Nakamura, A, Kaneko, K, Shoji, S, Kawata, S
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Journal Title
Optics Letters 30, 8
Pages: 881
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Elsevier
Author(s)
H.-B., Sun, K., Kanko, X. -M., Duan, S., Kawata
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Journal Title
"Nanoplasmonics, from fundamentals to applications" eds. S. Kawata, H. Masuhara 2006
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Takuo Tana ka Satoshi Kawata "Metallic structures with nanometer scale resolution fabricated by direct laser photoreduction and selected surface metallization"2008
Author(s)
Xuan-Ming, Duan, Yao-Yu, Cao, Wei-Kang, Wang, Xian-Zi, Dong, Wei-Qiang, Chen, Nobuyuki, Takeyasu
Organizer
PIERS 2008
Place of Presentation
Hangzhou China
Year and Date
20080324-28
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Photo-controlling Band-gap Shift in polymeric 3D photonic crystal2007
Author(s)
Qi, Ya, Wei-Qiang, Chen, Satoru, Shoji, Xian-Zi, Dong, Xuan-Ming, Duan, Satoshi, Kawata
Organizer
9th International Symposium on nolvmers for advanced technologies
Place of Presentation
Shanghia, China
Year and Date
20071022-25
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Two and Three- Dimensional Microfabrication of polymer nanocomposite by laser lithography2005
Author(s)
Xuan-Ming, Duan, Zheng-Bin, Sun, Xi-tiling, Xia, Xian-Zi, Dong, Satoru, Shoji, Hong-Bo, Sun, Satoshi, Kawata
Organizer
International Conference on Organic Photonics and Electronics 2005 & 8'" International Conference on Organic Nonlinear Optics (ICOPE2005/ICONO' 8)
Place of Presentation
Matsushima
Year and Date
20050307-11
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Syntheses, Properties and Microfabrication of Polymer/CdS Nanocomposite by Laser Interference Technique2005
Author(s)
Zheng-Bin, Sun, Xian-Zi, Dong, Xuan-Ming, Duan, Satoru, Shoji, Hong-Bo, Sun
Organizer
International Conference on Organic Photonics and Electronics 2005 & 8" International Conference on Organic Nonlinear Optics (ICOPE2005/ICONO' 8)
Place of Presentation
Matsushima
Year and Date
20050307-11
Description
「研究成果報告書概要(欧文)」より
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[Presentation] 光で創るナノの世界2005
Author(s)
河田, 聡
Organizer
第16回プラスティック成形加工学会年次大会
Place of Presentation
東京
Year and Date
2005-06-09
Description
「研究成果報告書概要(欧文)」より
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