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9th International Conference on Miniaturized Systems for Chemistry and Life sciences, MicroTAS 2005

作者： Tamaki, E. Hibara, A. Tsukahara, T. Kim, H.B. Kitamori, T. Core Research for Evolutional Science and Technology Japan Science and Technology Agency Japan Department of Applied Chemistry School of Engineering University of Tokyo Tokyo Japan Kanagawa Academy of Science and Technology Kawasaki Japan

ISBN: (纸本)0974361119

We developed a pressure-driven flow control system for chemical reaction in nanochannel. In this system, back pressure regulating was utilized to prevent the high pressure loss, which is usually occured in nanochannel. We evaluated the back pressure regulating system by investigating the flow rate in nanochannel. By utilizing the flow control system, chemical reaction in nanochannel was demonstrated. Two different solution for chemical reaction were simultaneously introduced into Y-shaped nanochannel and chemical reaction in nanochannel was performed. Copyright © 2005 by the Transducer research Foundation, Inc.

关键词： Chemical reactions

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Synthesis and template effects of resorcinol-based polymer nanostructures

Synthesis and template effects of resorcinol-based polymer n...

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54th SPSJ Annual Meeting 2005

作者： Fujikawa, Daisuke Uota, Masafumi Yoshimura, Takumi Sakai, Go Kijima, Tsuyoshi Department of Applied Chemistry Miyazaki University Core Research for Evolutional Science and Technology 1-1 Nishi Gakuenkibanadai Miyazaki-shi 889-2192 Japan

Recently, we have reported the synthesis of phenol-furfural (or formaldehyde) polymer nanotubes in the presence of cationic surfactant as the template. But it was unsuccessful to apply these nanotubes to proton conductors and carbon precursors, due to chemical and thermal instability of their frameworks. Here we report the synthesis of nanostructural polymer materials through resorcinol-formaldehyde copolymerization in the presence of CnTAB (n=16, 18).

关键词： Nanostructured materials

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Fabrication of nano-patterned surfaces for cell adhesion in microchips

Fabrication of nano-patterned surfaces for cell adhesion in ...

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9th International Conference on Miniaturized Systems for Chemistry and Life sciences, MicroTAS 2005

作者： Goto, Makiko Sato, Kiichi Yamato, Masayuki Hibara, Akihide Kitamori, Takehiko Department of Applied Chemistry School of Engineering University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-8656 Japan Department of Applied Biological Chemistry School of Agriculture and Life Sciences University of Tokyo Japan Kanagawa Academy of Science and Technology Japan Core Research for Evolutional Science and Technology Japan Science and Technology Corporation Japan Institute of Advanced Biomedical Engineering and Science Tokyo Women's Medical University Japan

ISBN: (纸本)0974361119

Cell adhesion surfaces with micro or nano structures were fabricated in microchips. Mouse fibroblasts cultured on the surfaces looked different from those on a tissue culture polystyrene dish. These results indicate that micro/nano-sized physical and chemical conditions of cell adhesion surfaces have influences on cell morphology and behavior. Copyright © 2005 by the Transducer research Foundation, Inc.

关键词： Cell adhesion

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Nanoscale structures formed in silicon cleavage studied with large-scale electronic structure calculations: Surface reconstruction, steps, and bending

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Physical Review B 2005年第7期72卷 075323-075323页

作者： Takeo Hoshi Yusuke Iguchi Takeo Fujiwara Department of Applied Physics University of Tokyo Bunkyo-ku Tokyo Japan Core Research for Evolutional Science and Technology (CREST) Japan Science and Technology Agency (JST) Kawaguchi-shi Saitama Japan

The 10−nm-scale structure formed in silicon cleavage is studied by the quantum mechanical calculations of large-scale electronic structure. The cleavage process was simulated and the results show not only the elementary process of the (experimentally observed) (111)-(2×1) surface reconstruction but also several step-formation processes. These processes are studied by analyzing electronic freedom and compared with scanning tunneling microscopy experiments. The stability mechanism of the (111)-(2×1) cleavage mode is presented beyond the traditional approach with surface energy. In other results, the cleavage path was bent into the experimentally observed planes, owing to the relative stability among cleavage modes. Several common aspects between cleavage and other phenomena are discussed from the viewpoints of nonequilibrium process and 10−nm-scale structure.

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Effective squeezing enhancement via measurement-induced non-Gaussian operation and its application to the dense coding scheme

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Physical Review A 2005年第2期72卷 022334-022334页

作者： Akira Kitagawa Masahiro Takeoka Kentaro Wakui Masahide Sasaki National Institute of Information and Communications Technology 4-2-1 Nukui-Kita Koganei Tokyo 184-8795 Japan Core Research for Evolutional Science and Technology Japan Science and Technology Agency 1-9-9 Yaesu Chuoh Tokyo 103-0028 Japan Department of Applied Physics The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan

We study the measurement-induced non-Gaussian operation on the single- and two-mode Gaussian squeezed vacuum states with beam splitters and on-off type photon detectors, with which mixed non-Gaussian states are generally obtained in the conditional process. It is known that the entanglement can be enhanced via this non-Gaussian operation on the two-mode squeezed vacuum state. We show that, in the range of practical squeezing parameters, the conditional outputs are still close to Gaussian states, but their second order variances of quantum fluctuations and correlations are effectively suppressed and enhanced, respectively. To investigate an operational meaning of these states, especially entangled states, we also evaluate the quantum dense coding scheme from the viewpoint of the mutual information, and we show that non-Gaussian entangled state can be advantageous compared with the original two-mode squeezed state.

关键词： STATES

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Visible‐Light‐Induced H2Evolution from an Aqueous Solution Containing Sulfide and Sulfite over a ZnS–CuInS2–AgInS2Solid‐Solution Photocatalyst†

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Angewandte Chemie 2005年第23期117卷

作者： Issei Tsuji Hideki Kato Akihiko Kudo Department of Applied Chemistry Faculty of Science Tokyo University of Science 1‐3 Kagurazaka Shinjuku‐ku Tokyo 162‐8601 Japan Fax: (+81) 33235‐2214 Core Research for Evolutional Science and Technology Japan Science and Technology Agency (CREST JST) 4‐1‐8 Honcho Kawaguchi‐shi Saitama 332‐001 Japan

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Polyoxovanadometalate‐Catalyzed Selective Epoxidation of Alkenes with Hydrogen Peroxide†

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Angewandte Chemie 2005年第32期117卷

作者： Yoshinao Nakagawa Keigo Kamata Miyuki Kotani Kazuya Yamaguchi Noritaka Mizuno Department of Applied Chemistry School of Engineering The University of Tokyo 7‐3‐1 Hongo Bunkyo‐ku Tokyo 113‐8656 Japan Fax: (+81) 3‐5841‐7220 Core Research for Evolutional Science and Technology (CREST) Japan Science and Technology Agency (JST) 4‐1‐8 Honcho Kawaguchi Saitama 332‐0012 Japan

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Etching processes of ZnO(0001) surface in solution studied by in situ scanning tunneling microscopy

Etching processes of ZnO(0001) surface in solution studied b...

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European Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004

作者： Inukai, Junji Itaya, Kingo New Industry Creation Hatchery Center Tohoku University Aoba-yama 10 Sendai 980-8579 Japan Department of Applied Chemistry School of Engineering Tohoku University Aoba-yama 04 Sendai 980-8579 Japan Core Research for Evolutional Science and Technology Kawaguchi Center Building Japan Science and Technology Agency 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan

In situ electrochemical scanning tunneling microscopy (EC-STM) was used to examine the zinc-terminated ZnO(0001)-Zn surface in electrolyte solution. Atomically-flat terrace-step structures were consistently observed on the surface which was prepared by chemical etching in alkaline solutions. Steps observed on the surface were composed of bilayers with a step height of 0.26 nm. Atomic images obtained by in situ EC-STM revealed that the surface has a (1×1) structure with hexagonal lattice. Etching was observed to proceed at step edges.

关键词： Etching

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Coexistence of superconductivity and antiferromagnetism in multilayered high-Tc superconductor HgBa2Ca4Cu5Oy: Cu-NMR study

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Physical Review B 2004年第1期69卷 014501-014501页

作者： H. Kotegawa Y. Tokunaga Y. Araki G.-q. Zheng Y. Kitaoka K. Tokiwa K. Ito T. Watanabe A. Iyo Y. Tanaka H. Ihara Department of Physical Science Graduate School of Engineering Science Osaka University Toyonaka Osaka 560-8531 Japan Core Research for Evolutional Science and Technology (CREST) of the Japan Science and Technology Corporation (JST) Kawaguchi Saitama 332-0012 Japan Department of Applied Electronics Science University of Tokyo Yamazaki Noda Chiba 278-8510 Japan National Institute of Advanced Industrial Science and Technology (AIST) Umezono Tsukuba 305-8568 Japan

We report a coexistence of superconductivity and antiferromagnetism in five-layered compound HgBa2Ca4Cu5Oy (Hg-1245) with Tc=108K, which is composed of two types of CuO2 planes in a unit cell; three inner planes (IP’s) and two outer planes (OP’s). The Cu-NMR study has revealed that the optimally doped OP undergoes a superconducting (SC) transition at Tc=108K, whereas the three underdoped IP’s do an antiferromagnetic (AF) transition below TN∼60K with the Cu moments of ∼(0.3–0.4)μB. Thus bulk superconductivity with a high value of Tc=108K and a static AF ordering at TN=60K are realized in the alternating AF and SC layers. The AF-spin polarization at the IP is found to induce the Cu moments of ∼0.02μB at the SC OP, which is the AF proximity effect into the SC OP.

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Cbfa1 expression is enhanced by the immunosuppressant FK506 in the osteoblastic cell line: UMR106

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Materials science and Engineering: C 2004年第6-8期24卷 845-850页

作者： Daisuke Iejima Mi-Hye Lee Hiroko Kojima Takafumi Yoshikawa Pi-Chao Wang Toshimasa Uemura Age Dimension Research Center (ADRC) National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central-6 Tsukuba Ibaraki 305-8566 Japan Institute of Applied Biochemistry University of Tsukuba Tsukuba Ibaraki 305-8572 Japan Department of Oral Biochemistry Dental School Kyungpook National University 101 Dong-In-Dong Jung-Gu Taegu 700-422 Korea JST (Japan Science and Technology) 5-3 Yonbancho Chiyoda-ku Tokyo 102-8666 Japan First Department of Pathology Nara Medical University Kashihara City Nara 634-8521 Japan CREST (Core Research for Evolutional Science and Technology) Japan Department of Orthopedic Surgery Tokyo Medical and Dental University 1-5-45 Yushima Bunkyo-ku Tokyo 113-8519 Japan

An immunosuppressant FK506 has been reported to induce osteoblast differentiation in vivo [J. Bone Miner. Res. 15 (2000) 1147]. To study the role of FK506 in osteoblast differentiation, we examined the mRNA expressions of several marker genes (Cbfa1, osteopontin, and alkaline phosphatase) in an osteoblastic cell line: UMR106-6. Results showed that the Cbfa1 (osteoblast specific transcription factor) expression in UMR cells was enhanced by treatment with FK506, promoting osteoblast differentiation. The effect was marked when simultaneous treatment with FK506 and dexamethasone was given to UMR cells comparing with the effects of treatment with each substance alone or non-treatment.

关键词： FK506 Cbfa1 Osteoblast differentiation Osteopontin Alkaline phosphatase

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