Researcher Database

ORIHARA Hiroshi
Faculty of Engineering Applied Physics Complex Material Physics
Professor

Researcher Profile and Settings

Affiliation

  • Faculty of Engineering Applied Physics Complex Material Physics

Job Title

    Professor

Degree

  • (BLANK)
  • (BLANK)

Research Interests

  • softmatter   liquid crystal   polymer   rheology   nonequilibrum   

Research Areas

  • Physics / Biophysics/Chemical physics
  • Physics / Mathematical physics/Fundamental condensed matter physics

Education

  •        - 1985  Nagoya University  Graduate School, Division of Engineering  japan
  •        - 1980  Shizuoka University  Faculty of Science  japan

Research Activities

Published Papers

Books etc

  • Non-Equilibrium Soft Matter Physics (Series in Soft Condensed Matter)
    ORIHARA Hiroshi (Morphology and Rheology of Immiscible Polymer Blends in Electric and Shear Flow Fields)
    World Scientific 2012 Contributor
  • Spatial Correlation Functions in Two-Dimensional XY System Consisting of Randomly Distribyted Topological Defects
    ()
    Journal of the Physical Society of Japan 1992

MISC

Research Grants & Projects

  • Ministry of Education, Culture, Sports, Science and Technology:Grants-in-Aid for Scientific Research(特定領域研究)
    Date (from‐to) : 2006 -2010 
    Author : Hiroshi ORIHARA
     
    北海道大学A new system has been introduced which has succeeded in clearly observing the three-dimensional structure of immiscible polymer blends. Without shear flow, droplet coalescence and column formation were clearly observed. Under shear flow subjected to a step electric field, on the other hand, a structural change was observed from a droplet-dispersed phase to a network one. It was shown that the shear stress can be described in terms of the interface tensor.
  • Ministry of Education, Culture, Sports, Science and Technology:Grants-in-Aid for Scientific Research(基盤研究(C))
    Date (from‐to) : 2007 -2008 
    Author : Hiroshi ORIHARA
     
    北海道大学
  • Ministry of Education, Culture, Sports, Science and Technology:Grants-in-Aid for Scientific Research(基盤研究(B))
    Date (from‐to) : 2001 -2002 
    Author : Hiroshi ORIHARA
     
    名古屋大学The main objectives of the project is to 1) synthesize several polymers for the immiscible polymer blend electrorheological (ER) fluid, 2) classify them according to physical properties, 3) elucidate the mechanism of ER effect ; the relationship between the domain structure and the rheological properties under shear flow and an electric field and 4) apply them to devices for controlling torque by an electric field.First, we developed a new system that combines a confocal scanning laser microscpe (CSLM) and a rheometer, with which structure observations and rheological measurements could be ...
  • Ministry of Education, Culture, Sports, Science and Technology:Grants-in-Aid for Scientific Research(基盤研究(C))
    Date (from‐to) : 2000 -2001 
    Author : Hiroshi ORIHARA
     
    名古屋大学Several novel intermediate phases, so-called SmC_a^* phase and some femelectnc phases, have been found in chiral smectic liquid crystals in addition to the antiferroelectric SmC_A^* phase. Among them, SmC_a^* phase has been attracting much attention because of its unique physical properties. We have performed Kerr effect and nonlinear dielectric spectroscopy to study the dynamic properties near the SmA-SmC_a^* phase transition point of an antiferroelectric liquid crystal 4-(l-methylheptyloxycarbonyl)phenyl 4-octylcarbonyloxybiphenil-4-carboxylate (MHPOCBC). A Landau-type theory was develope...
  • Ministry of Education, Culture, Sports, Science and Technology:Grants-in-Aid for Scientific Research(試験研究(B), 基盤研究(A))
    Date (from‐to) : 1995 -1996 
    Author : Masao DOI
     
    名古屋大学Since the observation of a large electrorheological (ER) effect in polymer blends of sidechain type polysiloxane liquid crystalline polymers (LCPs) and a dimethylsilicone (DMS) by Inoue et al, we have been making an intensive investigation to elucidate the mechanism. So far, we have clarified the fundamental mechanism of the polymer blend consisting of LCP droplets with high viscosity dispersed in DMS with low viscosity, which stretch and coalesce to from bridges between electrodes under an electric field, resulting in the increase of the apparent viscosity.This year we have investigated th...
  • Ministry of Education, Culture, Sports, Science and Technology:Grants-in-Aid for Scientific Research(一般研究(C))
    Date (from‐to) : 1990 -1991 
    Author : Yoshihiro ISHIBASHI
     
    名古屋大学The critical phenomenon in the swelling of polymer-gel has been studied. In this project, it was intended to study elastic instability of the polymer-gel, which is considered as one of the origins of swelling, using Brilloouin scattering technique. Usually the Brillouin peaks of the polymer-gel appear at wave number shifts within 0.5cm^<-1>. High resolution would be, therefore, required in the experimental eauipment. A pressure scanning Fabry-Perot interferometer designed for observation of the Brillouin scattering with high resolution, high contrast and high stability was cons...
  • Ministry of Education, Culture, Sports, Science and Technology:Grants-in-Aid for Scientific Research(一般研究(B))
    Date (from‐to) : 1985 -1986 
    Author : Yoshihiro ISHIBASHI
     
    名古屋大学Processes of formation of various orders have been investigated with the image processing system including a video camera.1. Polarization reversal in ferroelectric liquid crystals.1) Dependence on temperature and applied voltage (V) of ferroelectric liquid crystal DOBAMBC was studied. It has turned out that the switching time, the number of nuclei and the velocity of wall motion all depend only on V/ , where is the temperature difference from the SmA-to-SmC transition temperature. From this, it was concluded that the voltage for activation of defects to nuclei is proportional to...
  • Physical properties of antiferroelectric liquid crystals
  • Electrorheological fluid by polymers
  • Study of complex fluids by nonlinear dielectric spectroscopy

Educational Activities

Teaching Experience

  • 卒業論文
    開講年度 : 2017
    課程区分 : 学士課程
    開講学部 : 工学部
  • Advanced Exercise in Applied Physics
    開講年度 : 2017
    課程区分 : 修士課程
    開講学部 : 工学院
  • Advanced Exercise in Applied Physics
    開講年度 : 2017
    課程区分 : 修士課程
    開講学部 : 工学院
    キーワード : 応用物理学、量子物理学、凝縮系物理学、応用工学、ナノサイエンス、ナノテクノロジー
  • Advanced Study in Applied Physics
    開講年度 : 2017
    課程区分 : 博士後期課程
    開講学部 : 工学院
  • Advanced Research on Applied Physics
    開講年度 : 2017
    課程区分 : 博士後期課程
    開講学部 : 工学院
    キーワード : 応用物理学、量子物理学、凝縮系物理学、応用光学、ナノサイエンス、ナノテクノロジー
  • Internship
    開講年度 : 2017
    課程区分 : 学士課程
    開講学部 : 工学部
    キーワード : 想像的人材育成、実践的人材育成、就業体験、国内外インターンシップ
  • Internship Ⅰ
    開講年度 : 2017
    課程区分 : 学士課程
    開講学部 : 工学部
    キーワード : 想像的人材育成、実践的人材育成、就業体験、国内外インターンシップ
  • Internship Ⅱ
    開講年度 : 2017
    課程区分 : 学士課程
    開講学部 : 工学部
    キーワード : 想像的人材育成、実践的人材育成、就業体験、国内外インターンシップ
  • Exercise in Scientific English
    開講年度 : 2017
    課程区分 : 学士課程
    開講学部 : 工学部
    キーワード : 英語,読解,作文,英会話,プレゼンテーション,ディスカッション
  • Creative Engineering Design
    開講年度 : 2017
    課程区分 : 学士課程
    開講学部 : 工学部
    キーワード : 社会的ニーズ、調査研究、研究発表、既存知識、課題解決法
  • Continuum Mechanics
    開講年度 : 2017
    課程区分 : 学士課程
    開講学部 : 工学部
    キーワード : 弾性体、流体、ひずみ、応力、保存則


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