Norimasa Nishiyama

Profile
2002 PhD, faculty of science, University of Tokyo
2006 BL Scientist, GSECARS, Univ. of Chicago (USA)
2007 Assistant Professor, GRC, Ehime University
2009 Assocciate Professor, GRC, Ehime University
2012 BL Manager, Photon Science, DESY (Germany)
2016- S.A. Associate Prof., Tokyo Institute of Technology

Field of Specialization
tough ceramics, synthesis under high pressure and temperature, synchrotron radiation

Laboratory for Mater. & Struct(IIR, Tokyo Tech)

 http://www.msl.titech.ac.jp/english/member/profile/nishiyama_en.html
 nishiyama.n.ae@m.titech.ac.jp

Research Hub Group:Materials and Devices international hub group

Research Highlights

  • Discovery of transformation toughening by fracture-induced amorphization of the hardest oxide, nanopolycrystalline SiO2 stishovite
  • Synthesis of transparent ceramics of the third hardest material, polycrystalline cubic silicon nitride

News

  • November 2014
    “Hanging tough: Rare ceramic goes amorphous for strength”, introduction on the top page of American Ceramics Society. A paper published in Scientific Reports, “Fracture-induced amorphization of polycrystalline SiO2 stishovite: a potential platform for toughening in ceramics”
  • March 2017
    “High heat and pressure help researchers fabricate first samples of transparent silicon nitride”, introduction on the top page of American Ceramics Society. A paper published in Scientific Reports, “Transparent cubic silicon nitride”

Awards

  • Gold medal, Ehime University (1997)

Publications

  • Masaaki Misawa et al. “Picosecond amorphization of SiO2 stishovite under tension” Science Advances Vol. 3, no. 5, e1602339 (2017)
  • N. Nishiyama et al. “Transparent polycrystalline cubic silicon nitride ” Scientific Reports, 7, 44755 (2017)
  • E. Kulik, N.Nishiyama et al. “A complete solid solution with rutile-type strucuture in SiO2-GeO2 system at 12 GPa and 1600°C” J. Am Ceram Soc, 98, 4111-4116 (2015)
  • N. Nishiyama et al. “Fracture-induced amorphization of polycrystalline SiO2 stishovite: a potential platform for toughening in ceramics” Scientific Reports, 4, 6558 (2014)
  • N. Nishiyama et al. “Transparent nanocrystalline bulk alumina obtained at 7.7 GPa and 800°C” Scripta Materialia, 69, 362-365 (2013)
  • N. Nishiyama et al. “Synthesis of nanopolycrystalline bulk SiO2 stishovite with very high toughness” Scripta Materilalia, 67, 955-958 (2012)