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Exploitation of spontaneous formation of nano-structures through nonlinear chemical dynamics

Research Project

Project/Area Number 14350454
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 工業物理化学
Research InstitutionOSAKA UNIVERSITY

Principal Investigator

NAKATO Yoshihiro  NAKATO,Yoshihiro, 大学院・基礎工学研究科, 教授 (70029502)

Co-Investigator(Kenkyū-buntansha) NAKANISHI Shuji  OSAKA UNIVERSITY, Graduate School of Engineering Science, Assistant, 大学院・基礎工学研究科, 助手 (40333447)
IMANISHI Akihito  OSAKA UNIVERSITY, Graduate School of Engineering Science, Associate Professor, 大学院・基礎工学研究科, 助教授 (60304036)
MURAKOSHI Kei  Hokkaido University, Graduate School of Science, Professor, 大学院・理学研究科, 教授 (40241301)
Project Period (FY) 2002 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥15,000,000 (Direct Cost: ¥15,000,000)
Fiscal Year 2003: ¥6,300,000 (Direct Cost: ¥6,300,000)
Fiscal Year 2002: ¥8,700,000 (Direct Cost: ¥8,700,000)
Keywordsnonlinear dynamics / autocatalytic mechanism / electrochemical oscillation / nano-wire / metal lattice / super lattice / etching or photoetching / self-organization / エッチング / 樹枝状結晶 / シリコン / 非線形化学ダイナミクス
Research Abstract

We have studied spontaneous formation of nano-structures through non-equilibrium nonlinear dynamics for the purpose of exploitation and establishment of a new method for nano-structuring, and obtained the following results : (1)Scratching of H-terminated vicinal Si(111) surfaces with Teflon tweezers in 40% NH_4F led to formation of nano-wires, mainly composed of carbon and fluorine. The successive etching of the Si(111) surfaces with the nano-wires in 40% NH_4F produced surprisingly well-ordered step structures on Si(111). (2)Immersion of H-terminated Si(111) surfaces in aqueous hydrogen halide (HX) solutions caused halogenation of the Si(111) surface (i.e. conversion of surface Si-H bonds to Si-X bonds). The reactions depended largely on experimental conditions such as the kind of hydrogen halide, the presence or absence of dissolved oxygen, and reaction time. (3)The immersion of H-terminated Si(111) in 7.1 M HI at 5℃ produced oriented nano-wires at the surface. High-resolution XPS measurements showed that the nano-wires were composed of silicon iodides or related compounds. The orientation of the nano-wires was explained to arise from the fact that the wires formation occurred under a surface-diffusion limited condition. (4)The shape and size of metal nano-particles could be regulated by photo and electric-field assisted chemical processes. (5)Photo-etching of TiO_2 (rutile) in aq. H_2SO_4 produced ordered rectangular nano-holes and grooves in the <001> direction. (6)The appearance mechanisms for a number of electrochemical oscillations and accompanying spatiotemporal patterns were revealed.

Report

(3 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • Research Products

    (32 results)

All Other

All Publications (32 results)

  • [Publications] Shuji Nakanishi: "Oscillatory Peroxodisulfate Reduction on Pt and Au Electrodes under High Ionic Strength Conditions, Caused by Catalytic Effect of Adsorbed OH"J.Phys.Chem.B. 106. 2287-2293 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Kei Murakoshi: "Photoinduced Structural Changes of Silver Nanoparticles on Glass Substrate in Solution under an Electric Field"J.Phys.Chem.B. 106. 3041-3045 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Akira Tsujiko: "Photo-induced Surface Dissolution of Titanium Dioxide Particles in Sulfuric Acid Solution"Electrochemistry. 70. 457-459 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Shuji Nakanishi: "New Autocatalytic Mechanism for Metal Electrodeposition Leading to Oscillations and Fern-Leaf-Shaped Deposits"Chem.Lett.. 636-637 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Sho-ichiro Sakai: "Oscillation-Induced Layer-by-Layer Electrodeposition Producing Alternate Metal and Metal-Alloy Multllayers"Chem.Lett.. 640-641 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Shuji Nakanishi: "Promoted Dissociative Adsorption of Hydrogen Peroxide and Persulfate Ions and Electrochemical Oscillations Caused by a Catalytic Effect of Adsorbed Bromine"J.Electrochem.Soc.. 150. E47-E51 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tetsuya Kisumi: "Crystal-Face and Illumination-Intensity Dependences of Quantum Efficiencies of Photoelectrochemical Etching, in Relation with Those of Water Oxidation, at n-TiO_2, (Rutile) Semiconductor Electrodes"J.Electroanal.Chem. 545. 99-107 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Kei Murakoshi: "Effect of Photo-irradiation and External Electric Field on Structural Change of Metal Nano-Dots in Solution"Surf.Sci.. 532-535. 1109-1115 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Kazuhiro Fukami: "Mechanism of Oscillatory Electrodeposition of Zinc, Revealed by Microscopic Inspection of Dendritic Deposits during the Oscillation"Chem.Lett.. 32. 532-533 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] A.Imanishi: "Formation of Well-Ordered Step Structures on Si(111) by a Combination of Chemical Etching and Surface Scratching for Producing Macro-Sized Patterns"J.Phys.Chem.B. 108. 21-23 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Akihito Imanishi: "Adsorption of Cationic Surfactants on Hydrogen-Terminated Si(111) Surfaces Studied by In-situ Atomic Force Microscopy"Trans.Mater.Res.Soc.Jpn.. in press.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] A.Imanishi: "Temperature Dependence of Formation of Nano-Rods and Dots of Iodine Compounds on an H-Terminated Si(111) Surface in a Concentrated HI Solution"Langmuir. in press.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Shuji Nakanishi: "Oscillatory Peroxodisulfate Reduction on Pt and Au Electrodes under High Ionic Strength Conditions, Caused by Catalytic Effect of Adsorbed OH"J.Phy.Chem.B. 106. 2287-2293 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Kei Murakoshi: "Photoinduced Structural Changes of Silver Nanoparticles on Glass Substrate in solution under an Electric Field"J.Phys.Chem.B. 106. 3041-3045 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Akira Tsujiko: "Photo-induced Surface Dissolution of Titanium Dioxide Particles in Sulfuric Acid Solution"Electrochemistry. 70. 457-459 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Shuji Nakanishi: "New Autocatalytic Mechanism for Metal Electrodeposition Leading to Oscillations and Fern-Leaf-Shaped Deposits"Chem.Lett.. 636-637 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Sho-ichiro Sakai: "Oscillation-Induced Layer-by-Layer Electrodeposition Producing Alternate Metal and Metal-Alloy Multilayers"Chem.Lett.. 640-641 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Shuji Nakanishi: "Promoted Dissociative Adsorption of Hydrogen Peroxide and Persulfate Ions and Electrochemical Oscillations Caused by a Catalytic Effect of Adsorbed Bromine"J.Electrochem.Soc.. E47-E51 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tetsuya Kisumi: "Crystal-Face and Illumination-Intensity Dependences of Quantum Efficiencies of Photoelectrochemical Etching, in Relation with Those of Water Oxidation, at n-TiO_2 (Rutile) Semiconductor Electrodes"J.Electroanal.Che.. 545. 99-107 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Kei Murakoshi: "Effect of Photo-irradiation and External Electric Field on Structural Change of Metal Nano-Dots in Solution"Surf.Sci.. 532-535. 1109-1115 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Kazuhiro Fukami: "Mechanism of Oscillatory Electrodeposition of Zinc, Revealed by Microscopic Inspection of Dendritic Deposits during the Oscillation"Chem.Lett.. 32. 532-533 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] A.Imanishi: "Formation of Well-Ordered Step Structures on Si(111) by a Combination of Chemical Etching and Surface Scratching for Producing Macro-Sized Patterns"J.Phys.Chem.B. 108. 21-23 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Akihito Imanishi: "Adsorption of Cationic Surfactants on Hydrogen-Terminated Si(111) Surfaces Studied by In-situ Atomic Force Microscopy"Trans.Mater.Res.Soc.Japan. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] A.Imanishi: "Temperature Dependence of Formation of Nano-Rods and Dots of Iodine Compounds on an H-Terminated Si(111) Surface in a Concentrated HI Solution"Langmuir. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Shuji Nakanishi: "Promoted Dissociative Adsorption of Hydrogen Peroxide and Persulfate Ions and Electrochemical Oscillations Caused by a Catalytic Effect of Adsorbed Bromine"J.Electrochem.Soc.. 150. E47-E51 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kazuhiro Fukami: "Mechanism of Oscillatory Electrodeposition of Zinc, Revealed by Microscopic Inspection of Dendritic Deposits during the Oscillation"Chem.Lett.. 32(6). 532-533 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Akihito Imanishi: "Formation of Well-Ordered Step Structures on Si(111) by a Combination of Chemical Etching and Surface Scratching for Producing Macro-Sized Patterns"J.Phys.Chem.B. 108. 21-23 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Akihito Imanishi: "Adsorption of Cationic Surfactants on Hydrogen-Terminated Si(111) Surfaces Studied by In-situ Atomic Force Microscopy"Trans.Mater.Res.Soc.Jpn.. (in press).

    • Related Report
      2003 Annual Research Report
  • [Publications] S.Nakanishi: "New Autocatalytic Mechanism for Metal Electrodeposition Leading to Oscillations and Fern-Leaf-Shaped Deposits"Chem. Lett.. 31. 636-637 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] S.Sakai: "Oscillation-Induced Layer-by-Layer Electrodeposition Producing Alternate Metal and Metal-Alloy Multilayers on a Nanometer Scale"Chem. Lett.. 31. 640-641 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] S.Nakanishi: "Oscillatory Peroxodisulfate Reduction on Pt and Au Electrodes under High Ionic Strength Conditions, Caused by Catalytic Effect of Adsorbed OH"J. Phys. Chem. B. 106. 2287-2293 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] S.Nakanishi: "Promoted Dissociative Adsorption of Hydrogen Peroxide and Persulfate Ions and Electrochemical Oscillations Caused by a Catalytic Effect of Adsorbed Bromine"J. Electrochem. Soc.. 150. E47-E51 (2003)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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