"Yuki Sasahara,Ryota Shimizu,Norimasa Nishiyama,Masaki Azuma,Taro Hitosugi","エピタキシャル薄膜技術を活用したCaSiO3ペロブスカイトの大気圧下回収の検討","第62回高圧討論会",,,,,,2021,Oct. "Yuki Sasahara,Ryota Shimizu,Norimasa Nishiyama,Masaki Azuma,Taro Hitosugi","エピタキシャル安定化による高圧相ペロブスカイト型CaSiO3の大気圧下回収","第82回応用物理学会秋季学術講演会",,,,,,2021,Sept. "Yuki Sasahara,Koki Kanatani,Hiroaki Asoma,Kazunori Nishio,Ryota Shimizu,Norimasa Nishiyama,Taro Hitosugi","Fabrication of High-Pressure-Phase α-PbO2-type TiO2 Epitaxial Thin Films by Pressure-Induced Phase Transition","The Twelfth International Conference on the Science and Technology for Advanced Ceramics (STAC12)",,,,,,2021,July "Yuki Sasahara,Ryota Shimizu,Norimasa Nishiyama,Masaki Azuma,Taro Hitosugi","大気圧下不安定な高圧相ペロブスカイト型CaSiO3のエピタキシャル安定化による大気圧下回収","第5回固体化学フォーラム研究会",,,,,,2021,June "Yuki Sasahara,Takashi Hirose,Naoki Matsui,Koki Kanatani,Takuya Kakinokizono,Kouta Suzuki,Masaaki Hirayama,Nakayama,Kazunori Nishio,Ryoji KANNO,Ryota Shimizu,Norimasa Nishiyama,Genki Kobayashi,Taro Hitosugi","水素含有化合物のエピタキシャル薄膜合成手法の開発","第46回固体イオニクス討論会",,,,,,2020,Dec. "Yohei Onodera,Shinji Kohara,Philip S. Salmon,Akihiko Hirata,Norimasa Nishiyama,Suguru Kitani,Anita Zeidler,Motoki Shiga,Atsunobu Masuno,Hiroyuki Inoue,Shuta Tahara,Annalisa Polidori,Henry E. Fischer,Tatsuya Mori,Seiji Kojima,Hitoshi Kawaji,Alexander I. Kolesnikov,Matthew B. Stone,Matthew G. Tucker,Marshall T. McDonnell,Alex C. Hannon,Yasuaki Hiraoka,Ippei Obayashi,Takenobu Nakamura,Jaakko Akola,Yasuhiro Fujii,Koji Ohara,Takashi Taniguchi,Osami Sakata","Structure and properties of densified silica glass: characterizing the order within disorder",,"NPG Asia Materials","Springer Nature"," 12",,,2020,Dec. "Norimasa Nishiyama,Suguru Kitani,Yuki Ohta,Eleonora Kulik,Zuzana Netriova,Astrid Holzheid,Zoltan Lences,Hitoshi Kawaji,Fumihiro Wakai","Low temperature heat capacity measurements of beta-Si3N4 and gamma-Si3N4: Determination of the equilibrium phase boundary between beta-Si3N4 and gamma-Si3N4",,"JOURNAL OF THE EUROPEAN CERAMIC SOCIETY","ELSEVIER SCI. LTD."," 40"," 16"," 6309-6315",2020,Dec. "Yuki Sasahara,Koki Kanatani,Masayuki Matsuhisa,Yuji Wada,Ryota Shimizu,Norimasa Nishiyama,Taro Hitosugi","Impact of Surface Roughness on Recrystallization of an α-Al2O3(001) Single Crystal to α-AlO(OH) Diaspore Microcrystals",,"ACS Omega",," 5",," 23520",2020,Sept. "Yuki Sasahara,Koki Kanatani,Hiroaki Asoma,Masayuki Matsuhisa,Kazunori Nishio,Ryota Shimizu,Norimasa Nishiyama,Taro Hitosugi","Ultrahigh-pressure fabrication of single-phase α-PbO2-type TiO2 epitaxial thin films",,"AIP Advances",," 10",," 025125",2020,Feb. "Ryo MIYAKI,Kan SHINOBE,Gaku OKUMA,Anna SCIAZKO,Takaaki SHIMURA,Shotaro HARA,Toshinori OGASHIWA,Naoki SHIKAZONO,Norimasa NISHIYAMA,Fumihiro WAKAI","Evolution of anisotropic microstructures in free sintering and constrained sintering of Au sub-micron particles observed by FIB-SEM tomography","MATERIALS RESEARCH MEETING 2019 (MRM2019)",,,,,,2019,Dec. "Gaku OKUMA,Shuhei WATANABE,Kan SHINOBE,Norimasa NISHIYAMA,Akihisa TAKEUCHI,Kentaro UESUGI,Satoshi TANAKA,Fumihiro WAKAI","Synchrotron X-ray CT imaging of processing-induced defects formed during sintering of alumina","MATERIALS RESEARCH MEETING 2019 (MRM2019)",,,,,,2019,Dec. "FUMIHIRO WAKAI,Gaku Okuma,Norimasa Nishiyama,Olivier Guillon","Dynamics of Sintering of Multi-Particles",,"粉体および粉末冶金",,"Vol. 66","No. 12","pp. 598-603",2019,Dec. "Gaku Okuma,Shuhei Watanabe,Kan Shinobe,Norimasa Nishiyama,竹内 晃久,上杉 健太朗,Satoshi Tanaka,FUMIHIRO WAKAI","Evaluation of Macroscopic Mechanical Properties from 3-D Visualization of Microstructure in Sintering",,"粉体および粉末冶金",,"Vol. 66","No. 12","pp. 604-610",2019,Dec. "Gaku Okuma,Masaya Endo,Shuhei Watanabe,Norimasa Nishiyama,Akihisa Takeuchi,Kentaro Uesugi,Satoshi Tanaka,FUMIHIRO WAKAI","通電加圧焼結による亀裂状内部欠陥消失過程の放射光X線CT観察","2019 年度 第1回バルクセラミックスの信頼性に関するワークショップ",,,,,,2019,Dec. "Shuhei WATANABE,Gaku OKUMA,Yosuke SATO,Tomoki SEKIYA,Norimasa NISHIYAMA,Fumihiro WAKAI","Prediction of fracture from various shaped defects by XFEM","MATERIALS RESEARCH MEETING 2019 (MRM2019)",,,,,,2019,Dec. "Fumihiro WAKAI,Gaku OKUMA,Norimasa NISHIYAMA,Olivier GUILLON","Micromechanics of Sintering: Pinch-off of Pore Channel, Formation andDisappearance of a Closed Pore","MATERIALS RESEARCH MEETING 2019 (MRM2019)",,,,,,2019,Dec. "Masaya ENDO,Gaku OKUMA,Norimasa NISHIYAMA,Fumihiro WAKAI","Fabrication of transparent polycrystalline MgO by combination of spark plasma sintering and high pressure−high temperature synthesis","MATERIALS RESEARCH MEETING 2019 (MRM2019)",,,,,,2019,Dec. "Gaku Okuma,Shuhei Watanabe,Kan Shinobe,Norimasa Nishiyama,FUMIHIRO WAKAI,竹内 晃久,上杉 健太朗,Satoshi Tanaka","SPring-8のマルチスケールX線CTで見るアルミナの焼結中の3次元内部欠陥形成プロセス","2019年度フロンティア材料研究所若手研究者発表会及び先端無機材料共同研究拠点報告会",,,,,,2019,Nov. "Ryo Miyaki,Gaku Okuma,Kan Shinobe,Anna Sciazko,Takaaki Shimura,Shotaro Hara,Toshinori Ogashiwa,Naoki Shikazono,Norimasa Nishiyama,Fumihiro Wakai","3D evolution of anisotropic microstructures in free sintering and constrained sintering of Au sub-micron particles observed by FIB-SEM tomography","The 4th International Symposium on Creation of Life Innovation Materials for Interdisciplinary and International Researcher Development (iLIM-4)",,,,,,2019,Oct. "Fumihiro Wakai,Gaku Okuma,Norimasa Nishiyama,Olivier Guillon","Mechanics of Sintering in Formation and Disappearance of a Closed Pore","The 13th Pacific Rim Conference of Ceramic Societies (PACRIM13)",,,,,,2019,Oct. "Gaku Okuma,Shuhei Watanabe,Kan Shinobe,Norimasa Nishiyama,Fumihiro Wakai,Akihisa Takeuchi,Kentaro Uesugi,Satoshi Tanaka","Processing-induced defects formed during sintering of alumina observed by multiscale 3D X-ray tomography","The 13th Pacific Rim Conference of Ceramic Societies (PACRIM13)",,,,,,2019,Oct. "Yuki Sasahara,Koki Kanatani,Hiroaki Asoma,Masayuki Matsuhisa,Kazunori Nishio,Ryota Shimizu,Norimasa Nishiyama,Taro Hitosugi","薄膜試料への超高圧処理によるα-PbO2型TiO2単相エピタキシャル薄膜作製","第60回高圧討論会",,,,,,2019,Oct. "Gaku Okuma,Shuhei Watanabe,Kan Shinobe,Norimasa Nishiyama,Fumihiro Wakai,Akihisa Takeuchi,Kentaro Uesugi,Satoshi Tanaka","3D Multiscale-imaging of Processing-induced Defects Formed during Sintering of Alumina","MATERIALS SCIENCE & TECHNOLOGY (MS&T19)",,,,,,2019,Oct. "Fumihiro Wakai,Gaku Okuma,Norimasa Nishiyama,Olivier Guillon","Sintering Forces Acting among Particles during Sintering by Grain Boundary/Surface Diffusion","MATERIALS SCIENCE & TECHNOLOGY (MS&T19)",,,,,,2019,Oct. "Yuki Sasahara,Koki Kanatani,Masayuki Matsuhisa,Yuji Wada,Ryota Shimizu,Norimasa Nishiyama,Taro Hitosugi","超高圧下におけるα-Al2O3単結晶基板と圧媒体中に含まれる水の表面反応","第80回応用物理学会秋季学術講演会",,,,,,2019,Sept. "Fumihiro Wakai,GakuOkuma,Norimasa Nishiyama,Olivier Guillon","Micromechanics of formation and shrinkage of a closed pore in sintering by coupled grain boundary/surface diffusion",,"Journal of the European Ceramic Society",,"Vol. 39","No. 9","pp. 2952-2959",2019,Aug. "Gaku Okuma,Shuhei Watanabe,Kan Shinobe,Norimasa Nishiyama,Akihisa Takeuchi,Kentaro Uesugi,Satoshi Tanaka,Fumihiro Wakai","3D multiscale-imaging of processing-induced defects formed during sintering of hierarchical powder packings",,"Scientific Reports","Springer Nature","Vol. 9"," 11595",,2019,Aug. "Fumihiro Wakai,Gaku Okuma,Norimasa Nishiyama","Sintering mechanics of ceramics: a short review",,"Materials Today: Proceedings",,"Vol. 16",,"pp. 4-13",2019,Aug. "Yuki Sasahara,Koki Kanatani,Hiroaki Asoma,Kazunori Nishio,Ryota Shimizu,Norimasa Nishiyama,Taro Hitosugi","超高圧処理を活用した高圧相α-PbO2型TiO2の単相エピタキシャル薄膜作製","令和1年度物性研究所短期研究会",,,,,,2019,July "Gaku Okuma,Shuhei Watanabe,Kan Shinobe,Norimasa Nishiyama,Fumihiro Wakai,Akihisa Takeuchi,Kentaro Uesugi,Satoshi Tanaka","3D processing-induced defects formed during sintering of alumina observed by multiscale X-ray CT","International Conference on the Science and Technology for Advanced Ceramics (STAC-11)",,,,,,2019,July "Gaku Okuma,Shuhei Watanabe,Kan Shinobe,Norimasa Nishiyama,Fumihiro Wakai,Akihisa Takeuchi,Kentaro Uesugi,Shuntaro Yamaguchi,Satoshi Tanaka","SPring-8のマルチスケールX線CTで見るアルミナの焼結中の3次元内部欠陥形成プロセス","Spring Meeting of Japan Society of Powder and Powder Metallurgy, 2019",,,,,,2019,June "Yuki Sasahara,Hiroaki Asoma,Koki Kanatani,Kazunori Nishio,Ryota Shimizu,Norimasa Nishiyama,Taro Hitosugi","圧力誘起相転移による高圧相α-PbO2型TiO2エピタキシャル薄膜の作製","第4回固体化学フォーラム",,,,,,2019,June "FUMIHIRO WAKAI,Gaku Okuma,Norimasa Nishiyama,Olivier Guillon","Micromechanical principles of sintering process","Spring Meeting of Japan Society of Powder and Powder Metallurgy, 2019",,,,,,2019,June "Norimasa Nishiyama,Kotaro Fujii,Eleonora Kulik,Masahiro Shiraiwa,Nico A. Gaida,Yuji Higo,Yoshinori Tange,Astrid Holzheid,Masatomo Yashima,Fumihiro Wakai","Thermal expansion and P-V-T equation of state of cubic silicon nitride",,"Journal of the European Ceramic Society",,,,,2019,May "Yuki Sasahara,Hiroaki Asoma,Koki Kanatani,Kazunori Nishio,Ryota Shimizu,Norimasa Nishiyama,Taro Hitosugi","Fabrication of High-Pressure-Phase α-PbO2-type TiO2 Epitaxial Thin Films via Ultrahigh Pressure Treatment","The 2019 MRS Spring Meeting",,,,,,2019,Apr. "Yuki Sasahara,Hiroaki Asoma,Koki Kanatani,Masayuki Matsuhisa,Kazunori Nishio,Ryota Shimizu,Norimasa Nishiyama,Taro Hitosugi","超高圧処理を用いた高圧相α-PbO2型TiO2エピタキシャル薄膜作製","日本表面真空学会 2019年度 関東支部学術講演大会",,,,,,2019,Apr. "Norimasa Nishiyama,Fumihiro Wakai","Fabrication of transparent polycrystalline cubic silicon nitride and its physical properties","Science and Technology of Nano-Polycrystalline Diamond 2019",,,,,,2019,Mar. "Gaku Okuma,Shuhei Watanabe,Kan Shinobe,Norimasa Nishiyama,Fumihiro Wakai,Akihisa Takeuchi,Kentaro Uesugi,Shuntaro Yamaguchi,Satoshi Tanaka","SPring-8マルチスケールCTで見るアルミナの焼結中の3次元内部欠陥形成プロセス","日本セラミックス協会2019年年会",,,,,,2019,Mar. "Yuki Sasahara,Koki Kanatani,Masayuki Matsuhisa,Hiroaki Asoma,Kazunori Nishio,Ryota Shimizu,Norimasa Nishiyama,Taro Hitosugi","高圧相α-PbO2型TiO2エピタキシャル薄膜の平坦化","第66回応用物理学会春季学術講演会",,,,,,2019,Mar. "Fumihiro Wakai,Olivier Guillon,Gaku Okuma,Norimasa Nishiyama","Sintering forces acting among particles during sintering by grain-boundary/surface diffusion",,"Journal of the American Ceramic Society",,"Vol. 102",,"p. 538-547",2019,Feb. "Gaku Okuma,Shuhei Watanabe,Kan Shinobe,Norimasa Nishiyama,Fumihiro Wakai,Akihisa Takeuchi,Kentaro Uesugi,Satoshi Tanaka","Spring-8 ナノCTで見るアルミナの3次元内部欠陥構造","先進セラミックス第124委員会",,,,,,2019,Feb. "Norimasa Nishiyama","高圧場による透明セラミックス合成とそれを利用したレーザー衝撃圧縮実験","第4回 レーザー学会「ユビキタス・パワーレーザー」専門委員会",,,,,,2019,Feb. "Norimasa Nishiyama,Fumihiro Wakai","Toughening by fracture-induced amorphization in nanopolycrystalline SiO2 stishovite","International Conference on Plasticity, Damage, and Fracture 2019",,,,,,2019,Jan. "G. Spiekermann,M. Harder,K. Gilmore,P. Zalden,Ch. J. Sahle,S. Petigirard,M. Wilke,N. Biedermann,C. Weis,W. Morgenroth,J. S. Tse,E. Kulik,N. Nishiyama,H. Yavas,C. Sternemann","Persistent octahedral coordination in amorphous GeO2 up to 100 GPa by Kb" X-ray emission spectroscopy",,"Physical Review X",,,,,2019,Jan. "Gaku Okuma,Shuhei Watanabe,Kan Shinobe,Norimasa Nishiyama,FUMIHIRO WAKAI,竹内晃久,上杉 健太朗,山口 駿太郎,Satoshi Tanaka","SPring-8 マイクロ/ナノ マルチスケール CT で見るアルミナの 3 次元内部欠陥構造","2019年度 エンジニアリングセラミックス若手セミナー",,,,,,2019, "Norimasa Nishiyama","高圧下でつくる透明ファインセラミックス:透明立方晶窒化ケイ素セラミックスなど",,"セラミックデータブック 2018/19",,"Vol. 46","No. 100","pp. 126-131",2018,Dec. "Yuki Sasahara,Koki Kanatani,Masayuki Matsuhisa,Ryota Shimizu,Norimasa Nishiyama,Taro Hitosugi","α-Al2O3(001)単結晶基板を活用したα-AlO(OH)ダイアスポア(100)エピタキシャル結晶合成","第59回高圧討論会",,,,,,2018,Nov. "Eleonora Kulik,Norimasa Nishiyama,Yuji Higo,Nico A. Gaida,Tomoo Katsura","Hardness of polycrystalline SiO2 coesite",,"Journal of American Ceramics Society",,,,,2018,Nov. "Norimasa Nishiyama,Fumihiro Wakai","Transparent materials fabricated under pressure: permanently densified silica glass and transparent polycrystalline cubic silicon nitride","14th Laser Ceramics Symposium (LCS2018)",,,,,,2018,Nov. "Norimasa Nishiyama","High-pressure oxide ceramics that exhibit transformation toughening via fracture-induced amorphization","第5909回高圧討論会",,,,,,2018,Nov. "Norimasa Nishiyama,Fumihiro Wakai","Transparent polycrystalline ceramics fabricated under high pressure and temperature","MS&T18, Technical Meeting and Exhibition Materials Science & Technology",,,,,,2018,Oct. "Norimasa Nishiyama","Fabrication of transparent polycrystalline cubic silicon nitride and its physical properties measurements","9th International Workshop on Spinel Nitrides and Related Materials",,,,,,2018,Sept. "Norimasa Nishiyama,Fumihiro Wakai","Transformation toughening by fracture-induced amorphization in nanocrystalline stishovite",,"The Review of High Pressure Science and Technology","日本高圧力学会","Vol. 28","No. 3","pp. 170-176",2018,Sept. "Yuki Sasahara,Hiroaki Asoma,Koki Kanatani,Ryota Shimizu,Kazunori Nishio,Norimasa Nishiyama,Taro Hitosugi","薄膜成長技術×超高圧技術: 高圧相α-PbO2型TiO2薄膜の固相エピタキシャル成長","第79回応用物理学会秋季学術講演会",,,,,,2018,Sept. "Norimasa Nishiyama,Julia Langer,Takeshi Sakai,Youhei Kojima,Astrid Holzheid,Nico A. Gaida,Eleonora Kulik,Naohisa Hirao,Saori I. Kawaguchi,Tetsuo Irifune,Yasuo Ohishi","Phase relations in silicon and germanium nitrides up to 98 GPa and 2400℃",,"Journal of the American Ceramic Society",,,,,2018,Sept. "Johannes Buchen,Hauke Marquardt,Kirsten Schulze,Segio Speziale,Tiziana Boffa Ballaran,Norimasa Nishiyama,Micheal Hanfland","Equation of state of polycrystalline stishovite across the tetragonal-orthorhombic phase transition",,"Journal of Geophysical Research. Solid Earth",,"Vol. 123",,,2018,July "Norimasa Nishiyama,Fumihiro Wakai","Transparent polycrystalline cubic silicon nitride and its physical properties","12th International Conference on Ceramic Materials and Components for Energy and Environmental Applications (CMCEE 2018)",,,,,,2018,July "Norimasa Nishiyama,Fumihiro Wakai","Fabrication of transparent polycrystalline cubic silicon nitride and its physical properties","7th International Congress on Ceramics",,,,,,2018,June "Eleonora Kulik,Vadim Murzin,Shogo Kawaguchi,Norimasa Nishiyama,Tomoo Katsura","Thermal expansion of coesite determined by synchrotron powder X-ray diffraction",,"Physics and Chemistry of Minerals",,,,,2018,May "FUMIHIRO WAKAI,Gaku Okuma,Norimasa Nishiyama,Olivier Guillon","3粒子の固相焼結の背後にある焼結力","日本セラミックス協会2018年年会",,,,,,2018,Mar. "Fumihiro Wakai,Gaku Okuma,Norimasa Nishiyama","Role of microscopic forces in densification of particles in solid state sintering","The 6th International Symposium on Advanced Ceramics (ISAC-6)",,,,,,2018,Mar. "N.Nishiyama,R. Ishikawa,H. Ohfuji,T. Taniguchi,F. Wakai","Transparent polycrystalline cubic silicon nitride and its physical properties","6th International Symposium on Advanced Ceramics (ISAC-6)",,,,,,2018,Mar. "Norimasa Nishiyama","割れにくいシリカと透明なシリコンナイトライド","第10回ナノ物質集積複合化技術研究会",,,,,,2018,Mar. "Gaida A N,Nishiyama N,Masuno A,Sch?rmann U,Giehl C,Beermann O,Ohfuji H,Bednarcik J,Kulik E,Holzheid A,Irifune T,Kienle L","Transparent polycrystalline nanoceramics consisting of triclinic Al2SiO5 kyanite and Al2O3 corundum",,"J. Am. Ceram. Soc",,"Vol. 101",,"pp. 998-1003",2018,Jan. "Norimasa Nishiyama","立方晶窒化ケイ素透明セラミックス",,"FINE CERAMICS REPORT",,"Vol. 36","No. 1","pp. 11-16",2018,Jan. "Kimiko Yoshida,Nishiyama N,Shinoda Y,Akatsu T,Wakai F","Evaluation of effects of crack deflection and grain bridging on toughening of nanocrystalline SiO2 stishovite",,"J. Euro. Cer. Soc.",,,,,2017,Dec. "Norimasa Nishiyama","Exploration of super-hard material: laser-shock compression of transparent nanocrystalline high-pressure phases","Mini-workshop on high energy density science with XFELs",,,,,,2017,Dec. "Norimasa Nishiyama,Koki Kanatani,FUMIHIRO WAKAI","スピネル型窒化ケイ素・透明多結晶体の合成とその物性","第58回高圧討論会",,,,,,2017,Nov. "N. Nishiyama,R. Ishikawa,H. Ohfuji,H. Marquardt,T. Taniguchi,B. Kim,A. Masuno,Y. Ikuhara,F. Wakai,T. Irifune","Ultra high pressure sintering and synthesis of transparent polycrystalline cubic silicon nitride","International Conference on Sintering 2017",,,,,,2017,Nov. "Fumihiro Wakai,Shun Kanchika,Gaku Okuma,Norimasa Nishiyama","Microscopic sintering forces acting among particles during sintering by grain boundary/surface diffusion","Sintering2017",,,,,,2017,Nov. "Norimasa Nishiyama","Transformation toughening in silica and transparent polycrystalline cubic silicon nitride","3rd International Symposium on Metastable Materials Science & Technology",,,,,,2017,Oct. "Norimasa Nishiyama","スピネル型窒化ケイ素透明多結晶体の合成とその物性","先進セラミックス第124委員会 第153回会議",,,,,,2017,Sept. "Norimasa Nishiyama","A very tough hardest oxide: nanopolycrystalline SiO2 stishovite","Inernational Workshop on Giant Straining Process for Advanced Materials (GSAM2017)",,,,,,2017,Sept. "Norimasa Nishiyama","立方晶窒化ケイ素の透明多結晶体の高温高圧下における焼結","日本セラミックス協会 第30回秋季シンポジウム",,,,,,2017,Sept. "Norimasa Nishiyama","Transparent polycrystalline silicon nitride with spinel structure","9th International Symposium on Nitrides (ISNT2017) & 5th International Symposium on SiAlONs and Non-oxides (ISSNOX5)",,,,,,2017,Aug. "Norimasa Nishiyama","Fabrication of Transparent polycrystalline Spinel-type Silicon Nitride and its Physical Properties","10th International Conference n the Science and Technology for Advanced Ceramics (STAC-10)",,,,,,2017,Aug. "Norimasa Nishiyama,Ryo Ishikawa,Hiroaki Ohfuji,Hauke Marquardt,Takashi Taniguchi,Byung-Nam Kim,Atsunobu Masuno,Takashi Taniguchi,Byung-Nam Kim,Yuichi Ikuhara,FUMIHIRO WAKAI,Tetsuo Irifune","Transparent polycrystalline spinel-type silicon nitride","PACRIM Symposium 19: Transparent Ceramic Materials and Devices",,,,,,2017,May "Misawa M,Ryuo E,Yoshida K,Kalia R K,Aiichiro Nakano,Nishiyama N,Shimojo F,Vashishta P,Wakai F","Picosecond amorphization of SiO2 stishovite under tension",,"Science Advances",,"Vol. 3",,,2017,May "Nishiyama N,Ishikawa R,Ohfuji H,Marquardt H,Kurnosov A,Bednarcik J,Kulik E,Ikuhara Y,Wakai F,Irifune T","Transparent polycrystalline cubic silicon nitride",,"Scientific Reports",,"Vol. 7",,,2017,Mar. "Norimasa Nishiyama","高圧下で合成した透明ナノ多結晶体?立方晶窒化物と三斜晶系の酸化物?","Workshop on Materials science under ultra-high pressure MATSUYAMA 2017",,,,,,2017,Mar. "Yoshida K,Nishiyama N,Sone M,Wakai F","Strength and toughness of nanocrystalline SiO2 stishovite toughened by fracture-induced amorphization",,"Acta Materialia",,"Vol. 124",,"pp. 316-324",2017,Feb. "Gaida N A,Nishiyama N,Masuno A,Holzheid A,Ohfuji H,Schurmann U,Szillus C,Kulik E,Bednarcik J,Beermann O,Giehl C,Kienle","Synthesis of Al2O3/SiO2 nano-nano composite ceramics under high pressure and its inverse Hall-Petch behavior",,"J. Am. Ceram. Soc.",,"Vol. 100",,"pp. 323-332",2017,Jan.