Journal Paper

• H. Habara, Amit D. Lad, R. Nagami, Prashant Kumar Singh, Gourab Chatterjee, Amitava Adak, Malay Dalui, J. Jha, P. Brijesh, Y. Mishima, K. Nagai, H. Sakagami, Sheroy Tata, T. Madhu Trivikram, M. Krishnamurthy, K. A. Tanaka, G. Ravindra Kumar. Micro-optics for ultra-intense lasers, AIP Advances, American Institute of Physics, Vol. 11, No. 3, Mar. 2021.  Official location  
• Abdul Rais Shamsul Amir, Zainuriah Hassan, Ahmad Shuhaimi Abu Bakar, Mohd Nazri Abd Rahman, Yusnizam Yusuf, Muhamad Ikram Md Taib, Abdullah Fadil Sulaiman, Hayatun Najiha Hussin, Mohd Fairus Ahmad, Mohd Natashah Norizan, Nagai Keiji, Yuka Akimoto, Shoji Dai, Mohd Natashah Norizan. Effect of indium pre-flow on wavelength shiftand crystal structure of deep green light, Optical Materials Express, The Optical Society of America, Vol. 11, No. 3, pp. 926-935, Mar. 2021.  Official location  
• Prabhakarn Arunachalam, Keiji Nagai, Mabrook S. Amer, Mohamed A. Ghanem, Abdullah M. Al-May. Recent Developments in the Use of HeterogeneousSemiconductor Photocatalyst Based Materials for aVisible-Light-Induced Water-Splitting System—A Brief Review, Catalysts, Vol. 11, Jan. 2021.  Official location  
• Takahiro Murakami, Kosuke Ikezoi, Keiji Nagai, Hideki Kato, Toshiyuki Abe. A Water-Splitting System with a Cobalt (II,III) Oxide Co- Catalyst-Loaded Bismuth Vanadate Photoanode Along with an Organo-Photocathode, ChemElectroChem, VCH-Wiley, Vol. 7, pp. 5029 – 5035, Dec. 2020.  Official location  
• Christopher S. A. Musgrave, Shuntaro Shoji, Keiji Nagai. Easy-handling minimum mass laser target scaffold based on sub-millimeter air bubble -An example of laser plasma extreme ultraviolet generation-, Scientific Reports, Springer Nature, Vol. 10, No. 5906, Apr. 2020.  Official location  
• Keiji Nagai, Takayuki Kuwabara, Mohd Fairus Ahmad, Masahiro Nakano, Makoto Karakawa, Tetsuya Taima, Kohshin Takahashi. High performance photoanodic catalyst prepared from an active organic photovoltaic cell – high potential gain from visible light, Chemical Communications, Royal Society of Chemistry, Issue 55, No. 83, pp. 12491-12494, Oct. 2019.  Official location  
• Makoto Karakawa, Kenji Suzuki, Takayuki Kuwabara, Tetsuya Taima, Keiji Nagai, Masahiro Nakano, Takahiro Yamaguchi, Kohshin Takahashi. Factors contributing to degradation of organic photovoltaic cells, Organic Electronics, Elsevier, Vol. 76, Sept. 2019.
• Christopher Stephen Andrew Musgrave, Nan Lu, Rie Sato, Keiji Nagai. Gallium–tin alloys as a low melting point liquid metal for repetition-pulse-laser-induced high energy density state toward compact pulse EUV sources, RSC Advances, Royal Society of Chemistry, Vol. 9, Issue 24, pp. 13927-13932, May 2019.
• Keiji Nagai, Christopher S. A. Musgrave, Naoaki Kuwata, Junichi Kawamura. Electrochemically Synthesized Tin/Lithium Alloy To Convert Laser Light to Extreme Ultraviolet Light, ACS Omega, American Chemical Society, Vol. 3, No. 10, pp. 12422-12427, Oct. 2018.  Official location  
• Mohd Fairus Bin Ahmad, Toshiyuki Abe, Christopher S A Musgrave, Keiji Nagai. Study of Co-deposition Photoelectrode of Perylene Derivative and Phthalocyanine in Comparison with Its Bilayer Focusing on Charge Transfer Complex and Kinetic Analysis, ELECTROCHEMISTRY, The Electrochemical Society of Japan, Vol. 86, No. 5, pp. 235-242, Sept. 2018.  Official location  
• Mohd Fairus Ahmad, Motoya Suzuki, Toshiyuki Abe, Keiji Nagai. Enhanced oxidation power in photoelectrocatalysis based on a micrometer-localized positive potential in a terrace hetero p–n junction, NPG Asia Materials, Springer Nature Publishing, Vol. 10, pp. 630-641, July 2018.  Official location  
• Kentaro Fujine, Yuka Sato, Keiji Nagai, Toshiyuki Abe. Photoelectrochemical and photocatalytic investigation of the oxidative formation of H2 from a borane-ammonia complex using an organic p-n bilayer comprising a p-type cobalt phthalocyanine and an n-type perylene derivative, Journal of Electroanalytical Chemistry, Vol. 823, No. 1, pp. 323-327, June 2018.  Official location  
• Keiji Nagai, Christopher S. A. Musgrave, Wigen Nazarov. A review of low density porous materials used in laser plasma experiments, Physics of Plasmas, American Institute of Physics, Vol. 25, No. 3, pp. 030501 1-14, Mar. 2018.  Official location  
• I. Prencipe, J. Fuchs, S. Pascarelli, D. W. Schumacher, R. B. Stephens, N. B. Alexander, R. Briggs, M. Büscher, M. O. Cernaianu, A. Choukourov, M. De Marco, A. Erbe, J. Fassbender, G. Fiquet, P. Fitzsimmons, C. Gheorghiu, J. Hund, L. G. Huang, M. Harmand, N. J. Hartley, A. Irman, T. Kluge, Z. Konopkova, S. Kraft, D. Kraus, V. Leca, D. Margarone, J. Metzkes, K. Nagai, W. Nazarov, P. Lutoslawski, D. Papp, M. Passoni, A. Pelka, J. P. Perin, J. Schulz, M. Smid, C. Spindloe, S. Steinke, R. Torchio, C. Vass, T. Wiste, R. Zaffino, K. Zeil, T. Tschentscher, U. Schramm, T. E. Cowan. Targets for high repetition rate laser facilities: needs, challenges and perspectives, High Power Laser Science and Engineering, Cambridge University Press, Vol. 5, e17, Aug. 2017.  Official location  
• Yuto Kawai, Keiji Nagai, Toshiyuki Abe. A visible-light-induced photoelectrochemical water-splitting system featuring an organo-photocathode along with a tungsten oxide photoanode, RSC Advances, Royal Society of Chemistry, Vol. 7, No. 55, pp. 34694–34698, July 2017.  Official location  
• Toshiyuki Abe, Masato Okumura, Yuko Kikuchi, Takashi Ito, Keiji Nagai. A dual-functional organic p–n bilayer catalyst comprising a perylene derivative and cobalt phthalocyanine working under illumination and in the dark, Journal of Materials Chemistry A, Royal Chemical Society, Vol. 5, no. 16, pp. 7445, Apr. 2017.
• Christopher Musgrave, Takehito Murakami, Teruyuki Ugomori, Kensuke Yoshida, Shinsuke Fujioka, Hiroaki Nishimura, Hironori Atarashi, Tomokazu Iyoda, Keiji Nagai. High-space resolution imaging plate analysis of extreme ultraviolet (EUV) light from tin laser-produced plasmas, Review of Scientific Instruments, AIP Publishing, Vol. 88, No. 3, Mar. 2017.  Official location  
• Daiki Mendori, Takatoshi Hiroya, Megumi Ueda, Masachika Sanyoushi, Keiji Nagai, Toshiyuki Abe. Novel Photocatalytic Material of Organic p-n Bilayer Responsive to Near-Infrared Energy, Applied Catalysis B: Environmental, Elsevier, Vol. 205, pp. 514-518, Dec. 2016.
• Toshiyuki Abe, Katsuma Fukui, Yuto Kawai, Keiji Nagai, Hideki Kato. A water splitting system using an organophotocathode and titanium dioxide photoanode capable of bias-free H2 and O2 evolution, Chemical Communications, The Royal Society of Chemistry, Vol. 52, No. 49, pp. 7735-7737, June 2016.  Official location  
• Hideaki Habara, Shinichi Honda, M. Katayama, Hitoshi Sakagami, Keiji Nagai, Kazuo A. Tanaka. Efficient energy absorption of intense ps-laser pulse into nanowire target, Physics of Plasmas, Institute of Physics, Vol. 23, No. 6, June 2016.  Official location  
• Zheng Gong, Jianhua Bao, Keiji Nagai, Tomokazu Iyoda, Takehiro Kawauchi, Piotr Piotrowiak. Generation Dependent Ultrafast Charge Separation and Recombination in a Pyrene-Viologen Family of Dendrons, J. Phys. Chem. B, American Chemical Society, Vol. 120, No. 18, pp. 4286-95, Apr. 2016.  Official location  
• Prabhakarn Arunachalam, Shuai Zhang, Toshiyuki Abe, Motonori Komura, Tomokazu Iyoda, Keiji Nagai. Weak visible light (∼mW/cm2) organophotocatalysis for mineralization of amine, thiol and aldehyde by biphasic cobalt phthalocyanine/fullerene nano composites prepared by wet process, Appl. Catal. B Environmental, Elsevier, Vol. 193, No. 1, pp. 240-247, Apr. 2016.  Official location  
• Seitaro Morita, Eiji Kudo, Ryo Shirasaka, Minoru Yonekawa, Keiji Nagai, Hikaru Ota, Mikka N.-Gamo, Hidenobu Shiroishi. Electrochemical oxidation of ammonia by multi-wall-carbon-nanotube-supported Pt shell–Ir core nanoparticles synthesized by an improved Cu short circuit deposition method, Journal of Electroanalytical Chemistry, Elsevier, Vol. 762, No. 1, pp. 29-36, Dec. 2015.  Official location  
• Md Asadul Hoque, Md Asadul Hoque, Hideaki Komiyama, Hiroki Nishiyama, Keiji Nagai, Takehiro Kawauchi, Tomokazu Iyoda. Amphiphilic Liquid-Crystalline 4-Miktoarm Star Copolymers with a Siloxane Junction Leading to Cylindrically Nanostructured Templates for a Siloxane-Based Nanodot Array, 
J. Polym. Sci., Part A: Polym. Chem, Wiley, Vol. 54, No. 9, pp. 1175-1188, Nov. 2015.  Official location  
• Takehiro Kawauchi, Yuki Oguchi, Jun Sawayama, Keiji Nagai, Tomokazu Iyoda. Microwave-Assisted Synthesis of Dendritic Viologen-Arranged Molecules with an ωーMercaptoalkyl Group and Their Self-Assembled Monolayers Complexed with Various Anions, Macromolecules, 米国化学会, Vol. 48, No. 22, pp. 8090-97, Oct. 2015.
• Takehiro Kawauchi, Yuki Oguchi, Keiji Nagai, Tomokazu Iyoda. Conical Gradient junctions of Dendric Viologen Arrays on Electrodes, Scientific Reports, Vol. 5, No. 5, June 2015.  Official location  
• Toshiyuki Abe, Yuudai Hiyama, Katsuma Fukui, Kana Sahashi, Keiji Nagai. Efficient p-zinc phthalocyanine/n-fullerene organic bilayer electrode for molecular hydrogen evolution induced by the full visible-light energy, International Journal of Hydrogen Energy, Elsevier, Vol. 40, No. 30, pp. 9165-9170, June 2015.  Official location  
• Toshiyuki Abe, Yoshinori Tanno, Naohito Taira, Keiji Nagai. Efficient organo-photocatalysis system of an n-type perylene derivative/p-type cobalt phthalocyanine bilayer for the production of molecular hydrogen from hydrazine, RSC Advnces, RSC, Vol. 5, No. 12, pp. 46325-46329, May 2015.  Official location  
• N. Yamashita, S. Watanabe, K. Nagai, M. Komura, T. Iyoda, K. Aida, Y. Tada, H. Yoshida. Chemically Directed Self-Assembly of Perpendicularly Aligned Cylinders by Liquid Crystalline Block Copolymer, J. Mater. Chem. C, RSC, Vol. 3, No. 12, pp. 2837-47, Feb. 2015.  Official location  
• Kaori Kamata, Zhenzi Piao, Souichirou Suzuki, Takahiro Fujimori, Wataru Tajiri, Keiji Nagai, Tomokazu Iyoda, Atsushi Yamada, Toshiaki Hayakawa, Mitsuteru Ishiwara, Satoshi Haraguchi, Amba Belay, Takuo Tanaka, Keisuke Takana, Keisuke Takano, Masanori Hangyo. Spirulina-Templated Metal Microcoils with Controlled Helical Structures for THz Electromagnetic Responses, Scientific Reports, Vol. 4, No. 5, May 2014.
• Toshiyuki Abe, Naohiro Taira, Yoshinori Tanno, Yuko Kikuchi, Keiji Nagai. Decomposition of hydrazine by an organic fullerene–phthalocyanine p–n bilayer photocatalysis system over the entire visible-light region, Chem. Commun., Royal Chemical Society, Vol. 50, No. 16, pp. 1950, Feb. 2014.
• Motonori Komura, Hideaki Komiyama, Keiji Nagai, Tomokazu Iyoda. Direct Observation of Faceted Grain Growth of Hexagonal Cylinder Domains in a Side Chain Liquid Crystalline Block Copolymer Matrix, MACROMOLECULES, American Chemical Society, Vol. 46, No. 22, pp. 9013–9020, Nov. 2013.  Official location  
• H. Azechi, K. Mima, .i Shiraga, S. Fujioka, H. Nagatomo, T. Johzaki, T. Jitsuno, M. Key, R. Kodama, M. Koga, K. Kondo, J. Kawanaka, N. Miyanaga, M. Murakami, K. Nagai, M. Nakai, H. Nakamura, T. Nakamura, T. Nakazato, Y. Nakao, K. Nishihara, H. Nishimura, T. Norimatsu, P. Norreys, T. Ozaki, J. Pasley, H. Sakagami, Y. Sakawa, N. Sarukura, T. Shimidu, A.i Sunahara, K. Shigemori, T. Taguchi, K. Tanaka, K. Tsubakimoto, Y. Fujimoto, H. Homma, A. Iwamoto. Present status of fast ignition realization experiment and inertial fusion energy development, Nuclear Fusion, IAEA, Vol. 53, No. 10, 104021, Oct. 2013.  Official location  
• Keiji Nagai, Toshiyuki Abe. Full-spectrum-visible-light photocatalyst based on the active layer of organic solar cell –towards water splitting and volatile molecule degradation-, KOBUNSHI RONBUNSHU Japanese Journal of Polymer Science and Technology, 高分子学会, Vol. 70, No. 9, pp. 459-475, Sept. 2013.  Official location  
• M. Primout, D. Babonneau, L. Jacquet, B. Villette, F. Girard, D. Brebion, P. Stemmler, K.B. Fournier, R. Marrs, M.J. May, R.F. Heeter, R.J. Wallace, H. Nishimura, S. Fujioka, M. Tanabe, H. Nagai. A new hybrid target concept for multi-keV X-ray sources, High Energy Density Physics, Elsevier, Vol. 9, No. 4, pp. 750-760, Sept. 2013.  Official location  
• Keiji Nagai, Yuzuri Yasuda, Tomokazu Iyoda, Toshiyuki Abe. Multilayerization of Organophotocatalyst Films that Efficiently Utilize Natural Sunlight in a One-Pass-Flow Water Purification System, ACS Sustainable Chem. Eng, American Chemical Society, Vol. 1, No. 8, pp. 1033−1039, Aug. 2013.  Official location  
• Motonori Komura, Kaori Kamata, Tomokazu Iyoda, Keiji Nagai. Hexagonally Arranged Nanopore Film Fabricated via Selective Etching by 172-nm Vacuum Ultraviolet Light Irradiation, Fusion Science and Technology, American Nuclear Society, Vol. 63, No. 2, pp. 257-264, Mar. 2013.  Official location  
• Shingo Hadano, Hiroshige Handa, Keiji Nagai, Tomokazu Iyoda, JingZe Li, Shigeru Watanabe. Surface-enhanced Raman Scattering (SERS) Effect of Hexagonally Arranged Gold Nanoparticle Array with 29-nm Particles and 23-nm Gaps Using Liquid-crystalline Block-copolymer Template, Chemistry Letter, Vol. 42, No. 1, p. 71-73, Jan. 2013.  Official location  
• Toshiyuki Abe, Yoshinori Tanno, Toshihiro Ebina, Shouichi Miyakushi, Keiji Nagai. Enhanced photoanodic output at an organic p/n bilayer in the water phase by means of the formation of whiskered phthalocyanine, ACS Appl. Mater. Interfaces, ACS, Vol. 5, No. 4, pp. 1248–1253, Jan. 2013.  Official location  
• Toshiyuki Abe, Miyuki Ichikawa, Takahito Hikage, Seiji Kakuta, Keiji Nagai. Relationship between the morphology of poly(3-hexylthiophene)/methanofullerene composite and its photoelectrode characteristics in the water phase, Chem. Phys. Lett., Elsevier, Vol. 549, p. 77-81, Oct. 2012.  Official location  
• Shuai Zhang, Toshiyuki Abe, Tomokazu Iyoda, Keiji Nagai. Photoelectrode Characteristics of Partially Hydrolyzed Aluminum Phthalocyanine Chloride/Fullerene C60 Composite Nanoparticles Working in a Water Phase, Molecules, MDPI, Vol. 17, No. 9, p. 10801- 10815, Sept. 2012.  Official location  
• Toshiyuki Abe, Junpei Chiba, Misaki Ishidoya, Keiji Nagai. Organophotocatalysis system of p/n bilayers for wide visible-light-induced molecular hydrogen evolution, RSC Advances, Royal Chemical Society, Vol. 2, No. 21, p. 7992-7996, Aug. 2012.  Official location  
• Tianyu Yang, Shuai Zhang, Motonori Komura, Tomokazu Iyoda, Keiji Nagai. Site-Selective Self-Assembly of Fullerene Nanoparticles on Amphiphilic Block Copolymer Thin Film from Water Suspension, Japanese Journal of Applied Physics, The Japan Society of Applied Physics, Vol. 51, No. 7, June 2012.  Official location  
• Arunachalam Prabhakarn, Shuai Zhang, Keiji Nagai, Toshiyuki Abe, Tomokazu Iyoda. Synthesis and characterization of Biphasic Vanadyl phthalocyanine and Ccomposite nanoparticles through a reprecipitation process, Trans. Mat. Res. Soc. Japan, Vol. 37, No. 2, p. 205- 208, June 2012.
• Shuai Zhang, Prabhakarn Arunachalam, Toshiyuki Abe, Tomokazu Iyoda, Keiji Nagai. Photocatalytic decomposition of N-methyl-2-pyrrolidone, aldehydes, and thiol by biphase and p/n junction-like organic semiconductor composite nanoparticles responsive to nearly full spectrum of visible light, Journal of Photochemistry and Photobiology A: Chemistry, Elsevier, Vol. 244, No. 1, pp. 18-23, June 2012.  Official location  
• Nanae Yamashita, Hideaki Komiyama, Yongbin Zhao, Motonori Komura, Tomokazu Iyoda, Keiji Nagai. Hexagonally Arrayed 17nm Interpenetrating and Continuous Biphasic Structure via Block-Copolymer-Templating Process, Japanese Journal of Applied Physics, 応用物理学会, Vol. 51, No. 7, June 2012.  Official location  
• Toshiyuki Abe, Kazuki Nakamura, Hiromasa Ichinohe, Keiji Nagai. Evaluation of photoanodic output on carbon cluster/phthalocyanine films with respect to the types of n-type conductors employed, Journal of Materials Science, Springer, Vol. 47, No. 2, pp. 1071-1076, Dec. 2011.
• Keiji Nagai, Toshiyuki Abe, Yumi Kaneyasu, Yuzuri Yasuda, Ichirou Kimishima, Tomokazu Iyoda, Hiroshi Imaya. A Full-Spectrum Visible-Light-Responsive Organophotocatalyst Film for Removal of Trimethylamine, ChemSusChem, Wiley, Vol. 4, No. 6, pp. 727–730, June 2011.  Official location  
• Liqin Ge, Jianyu Ji, Lingling Bai, Teng Fei, Weichen Wang, Keiji Nagai, Hiroaki Nishimura, Yasukazu Izawa, Kunioki Mima, Takayoshi Norimatsu. Effect of Nd:YAG Laser Energy on Multilayer Hollow Nanofiber Target's Extreme Ultraviolet Conversion Efficiency, Journal of Macromolecular Science, Part B: Physics, Taylor & Francis, Vol. 50, No. 9, pp. 1761–1770, May 2011.
• Shuai Zhang, Ryohei Sakai, Toshiyuki Abe, Tomokazu Iyoda, Takayoshi Norimatsu, Keiji Nagai*. Photoelectrochemical and Photocatalytic Properties of BiphasicOrganic p- and n-Type Semiconductor Nanoparticles Fabricatedby a Reprecipitation Process, ACS Appl. Mater. Interfaces, American Chemical Society, Vol. 3, No. 6, pp. 1902–1909, May 2011.  Official location  
• Toshiyuki Abe, Shunsuke Tobinai, Naohiro Taira, Junpei Chiba, Takashi Ito, Keiji Nagai. Molecular Hydrogen Evolution by Organic p/n Bilayer Film of Phthalocyanine/Fullerene in the Entire Visible-Light Energy Region, J. Phys. Chem. C, American Chemical Society, Vol. 115, No. 15, pp. 7701-7705, Apr. 2011.  Official location  
• Keiji Nagai, Kouhei Miyamoto, Tomokazu Iyoda, Cao Pan, ZhongZe Gu. MONOLITHIC AND LOW-DENSITY (<50 mg/cm^3) METALOXIDES FABRICATED USING ELECTROSPINNING:VANADIUM OXIDE AND COPPER OXIDE EXAMPLES, FUSION SCIENCE AND TECHNOLOGY, American Nuclear Society, Vol. 59, No. 1, pp. 216-220, Jan. 2011.  Official location  
• H. HOMMA, M. NAKAI, H. KADOTA, H. HOSOKAWA, M. NAGATA, T. NORIMATSU, H. AZECHI, T. FUJIMURA, K. NAGAI. RECENT DEVELOPMENTS IN FABRICATION OF NEWCONCEPTUAL GOLD CONE AND MACHINING OFPOLYSTYRENE SHELL FOR FAST IGNITION TARGET, Fusion Science and Technology, American Nuclear Society, Vol. 51, No. 1, pp. 276-278, Jan. 2011.  Official location  
• Toshiyuki Abe, Yuutarou Kamei, Keiji Nagai. Study of photoanode kinetics at metal-free phthalocyanine in an organic p/n bilayer with respect to the pH conditions employed, Solid State Sciences, Elsevier, Vol. 12, No. 7, pp. 1136-1139, July 2010.  Official location  
• Liqin Ge, Jianyu Ji, Tian Tian, Zhongdang Xiao, Zhongze Gu, Takayoshi Norimatsu, Yoshinori Shimada, Hiroaki Nishimura, Shinsuke Fujioka, Keiji Nagai. Fabrication of the Hollow SnO2 nanoparticles contained Spheres as Extreme Ultraviolet (EUV) target, Colloids and Surfaces A: Physicochem. Eng. Aspects, Elsevier, Vol. 359, No. 1-3, pp. 88-92, Apr. 2010.  Official location  
• Toshiyuki Abe, Hiromasa Ichinohe, Seiji Kakuta, Keiji Nagai. Organic Photoanode of Fullerene/Phthalocyanine Working in the Water Phase with Respect to Preparation Methods of the Bilayer Film, Japanese Journal of Applied Physics, 応用物理学会, Vol. 49, No. 1, 015101, Jan. 2010.
• Minoru Tanabe, Hiroaki Nishimura, Naofumi Ohnishi, Kevin B. Fournier, Shinsuke Fujioka, Atsushi Iwamae, Stephanie B. Hansen, Keiji Nagai, Frederic Girard, Michel Primout, Bruno Villette, Didier Brebion, Kunioki Mima. Characterization of heat-wave propagation through laser-driven Ti-doped underdense plasma, High Energy Density Physics, elsevier, Vol. 6, No. 1, pp. 89-94, Jan. 2010.
• Iwamoto, A., Fujimura, T., Nakai, M., Keiji Nagai, Norimatsu, T., Azechi, H., Maekawa, R., Sakagami, H.. Study on possible fuel layering sequence for FIREX target, Journal of Physics: Conference Series, Vol. 244, No. PART 3, 2010.
• Fujioka, S., Nishimura, H., Takabe, H., Yamamoto, N., Nishihara, K., Salzmann, D., Norimatsu, T., Miyanaga, N., Mima, K., Azechi, H., Sunahara, A., Shimada, Y., Izawa, Y., Keiji Nagai, Wang, F., Zhong, J., Zhao, G., Li, Y., Dong, Q., Wang, S., Zhang, Y., Zhang, J., Y-J, Rhee, Y-W, Lee, D-H, Kwon. Laser-produced plasmas as unique x-ray souces for industry and astrophysics, Journal of Physics: Conference Series, Vol. 244, No. PART 1, 2010.
• Takeshi Fujimura, Mitsuo Nakai, Akifumi Iwamoto, Keiji Nagai, Hirofumi Homma, Ken-ichi Tanabe, Takayoshi Norimatsu. Manufacturing of leak check of shell targets for FIREX-I project, Plasma and Fusion Research, プラズマ・核融合学会, Vol. 4, No. S1010, Nov. 2009.  Official location  
• H. Azechi, K. Mima, Yasushi Fujimoto, S. Fujioka, H. Homma, M. Isobe, A. Iwamoto, Takahisa Jitsuno, T. Johzaki, R. Kodama, M. Koga, Kiminori Kondo, Junji Kawanaka, T. Mito, noriaki Miyanaga, Osamu Motojima, M. Murakami, H. Nagatomo, K. Nagai, M. Nakai, H. Nakamura, T. Nakamura, T. Nakazato, Y. Nakao, K. Nishihara, H. Nishimura, T. Norimatsu, T. Ozaki, H. Sakagami, Yoichi Sakawa, Nobuhiko Sarukura, K. Shigemori, T. Shimizu, H. Shiraga, A. Sunahara, T. Taguchi, K.A. Tanaka, K. Tsubakimoto. Plasma physics and laser development for the Fast-Ignition Realization Experiment (FIREX) Project, Nuclear Fusion, IOP, IAEA, Vol. 49, No. 10, 104024, Oct. 2009.
• KEIJI NAGAI, QinCui Gu, YUZURI YASUDA, TAKAYOSHI NORIMATSU, SHINSUKE FUJIOKA, Hiroaki Nishimura, Noriaki Miyanaga, Yasukazu Izawa, Kunioki Mima. Oriented and Low-Density Tin Dioxide Film by Sol–GelMineralizing Tin-Contained Hydroxypropyl CelluloseLyotropic Liquid Crystal for Laser-Induced ExtremeUltraviolet Emission, J. Polym. Sci.: Part A: Polym. Chem., Vol. 47, No. 18, pp. 4566-4576, Sept. 2009.  Official location  
• Han Yang, Keiji Nagai, Toshiyuki Abe, Hirofumi Homma, Takayoshi Norimatsu, Ramasami Ramaraj. Enhanced Catalytic Activity of Gold Nanoparticles Doped in a Mesoporous OrganicGel Based on Polymeric Phloroglucinol Carboxylic Acid -Formaldehyde, ACS Appl. Mater. Interfaces, American Chemical Society, Vol. 1, No. 9, pp. 1860, Sept. 2009.  Official location  
• Fuyumi Ito, Naotake Nakamura, Takayoshi Norimatsu, Keiji Nagai. Tin-Doped Resorcinol-Formaldehyde Aerogel with Decanano-Cell Structure, Plasma and Fusion Research, プラズマ・核融合学会, Vol. 4, No. S1011, Sept. 2009.  Official location  
• Akifumi Iwamoto, Takeshi Fujimura, Mitsuo Nakai, Takayoshi Norimatsu, Keiji Nagai, Ryuji Maekawa, Hitoshi Sakagami. Proposal on Temperature Control Procedure of the Cryogenic Target for the FIREX Project, Plasma and Fusion Research, プラズマ・核融合学会, Vol. 4, No. S1007, Sept. 2009.  Official location  
• Hiroshi AZECHI, Mitsuo NAKAI, Hirofumi HOMMA, Tomoyuki JOHZAKI, Mayuko KOGA, Kunioki MIMA, Noriaki MIYANAGA, Masakatsu MURAKAMI, Hideo NAGATOMO, Keiji NAGAI, Tatsufumi NAKAMURA, Katsunobu NISHIHARA, Hiroaki NISHIMURA, Takayoshi NORIMATSU, Youichi SAKAWA, Keisuke SHIGEMORI, Hiroyuki SHIRAGA, Akifumi IWAMOTO, Toshiyuki MITO, Hitoshi SAKAGAMI, Osamu MOTOJIMA, Ryosuke KODAMA, Kazuo A. TANAKA, Atsushi SUNAHARA. Advanced target design for the FIREX-I project, Plasma Fusion Res., The Japan Society of Plasma Science and Nuclear Fusion Research, Vol. 4, No. S1001, Sept. 2009.  Official location  
• Keiji Nagai, H. Yang, T. Norimatsu, H. Azechi, F. Belkada, Y. Fujimoto, T. Fujimura, K. Fujioka, S. Fujioka, H. Homma, F. Ito, A. Iwamoto, T. Jitsuno, Y. Kaneyasu, M. Nakai, N. Nemoto, H. Saika, T. Shimoyama, Y. Suzuki, K. Yamanaka, K. Mima. Fabrication of aerogel capsule, bromine-doped capsule, and modified gold cone in modified target for Fast Ignition Realization Experiment (FIREX) Project, Nuclear Fusion, Institute of Physics, IAEA, Vol. 49, No. 9, 095028 (9pp), Sept. 2009.  Official location  
• A. Iwamoto, T. Fujimura, M. Nakai, T. Norimatsu, K. Nagai, H. Sakagami, T. Mito, O. Motojima. TEMPERATURE CONTROL IN A CRYOGENIC TARGET WITH A CONICAL LASER GUIDE FOR FUEL LAYERING, Fusion Science and Technology, American Nuclear Society, Vol. 56, No. 1, pp. 427-431, July 2009.  Official location  
• Tsuyoshi Tanimoto, H. Habara, R. Kodama, M. Nakatsutsumi, Kazuo A. Tanaka, K. L. Lancaster, J. S. Green, R. H. H. Scott, M. Sherlock, Peter A. Norreys, R. G. Evans, M. G. Haines, S. Kar, M. Zepf, J. King, T. Ma, M. S. Wei, T. Yabuuchi, F. N. Beg, M. H. Key, P. Nilson, R. B. Stephens, H. Azechi, K. Nagai, T. Norimatsu, K. Takeda, J. Valente, J. R. Davies. Measurements of fast electron scaling generated by petawatt laser systems, Physics of Plasmas, AIP, Vol. 16, No. 6, 062703, June 2009.
• A. L. Lei, K. A. Tanaka, R. Kodama, K. Adumi, H. Habara, Y. Kitagawa, K. Kondo, T. Matsuoka, T. Tanimoto, T. Yabuuchi, K. Mima, K. Nagai, H. Nagatomo, T. Norimatsu, K. Sawai, K. Suzuki, Wei Yu, Han Xu, X. Q. Yang, L. H. Cao, H. B. Cai, Y. Sentoku, A. Pukhov, R. Kumar, R. Snavely, R. Freeman, Min Yu, J. Zheng. Study of ultraintense laser propagation in overdense plasmas for fast ignition, Physics of Plasmas, AIP, Vol. 16, No. 5, 056307, May 2009.
• Fuyumi Ito, Naotake Nakamura, Keiji Nagai, Mitsuo Nakai, Takayoshi Norimatsu. SMOOTH MEMBRANE FORMATIONON RESORCINOL-FORMALDEHYDE AEROGEL BALLS GELATED USING A BASIC PHASE-TRANSFER CATALYST, Fusion Sci. Technol., American Nuclear Society, Vol. 55, No. 4, pp. 465-471, May 2009.  Official location  
• Keiji NAGAI, Qincui GU, Takayoshi Norimatsu, Shinsuke FUJIOKA, Hiroaki NISHIMURA, Noriaki Miyanaga, Katsunobu NISHIHARA, Yasukazu IZAWA, Kunioki. MIMA. Nano-structured lithium-tin plane fabrication for laserproduced plasma and extreme ultraviolet generation, Laser and Particle Beams, Cambridge University Press, Vol. 26, No. 3, pp. 497-501, Sept. 2008.  Official location  
• Han YANG, Keiji NAGAI, Mitsuo NAKAI, Takayoshi NORIMATSU. Thin shell aerogel fabrication for FIREX-I targets usinghigh viscosity (phloroglucinol carboxylic acid)/formaldehyde solution, Laser and Particle Beams, Cambridge University Press, Vol. 26, No. 3, pp. 449–453, Sept. 2008.  Official location  
• D. BATANI, R. DEZULIAN, R. REDAELLI, H. Stabile, F. Canova, T. Desai, G. Lucchini, E. Krousky, K. Masek, M. Pfeifer, J. Skala, R. Dudzak, B. Rus, J. Ullschmied, V. Malka, J. Faure, M. Koenig, J. Limpouch, W. Nazarov, D. Pepler, K. Nagai, T. Norimatsu, H. Nishimura. Recent experiments on the hydrodynamics oflaser-produced plasmas conducted at the PALS laboratory, Laser and Particle Beams, Cambridge University Press, Vol. 25, No. 1, pp. 127– 141, Mar. 2007.
• Keiji Nagai, H. Azechi, F. Ito, A. Iwamoto, Y. Izawa, T. Johzaki, R. Kodama, K. Mima, T. Mito, M. Nakai, N. Nemoto, T. Norimatsu, Y. Ono, K. Shigemori, H. Shiraga, K. A. Tanaka. Foam Materials for Cryogenic Targets of Fast Ignition Realization Experiment (FIREX), Nuclear Fusion, Institute of Physics, IAEA, Vol. 45, No. 11, pp. 1277-1283, Nov. 2005.  Official location  

Book

• Keiji Nagai. Novel Approaches to Photofunctional Molecular and Polymeric Materials, Novel Approaches to Photofunctional Molecular and Polymeric Materials, CMC出版, pp. 155-163, Apr. 2019.  Official location  
• Keiji Nagai, ほか. 臭いの測定法と消臭・脱臭技術事例集 第６章５節 有機光触媒J-catによる消臭と、低コストに大量合成する技術, 臭いの測定法と消臭・脱臭技術事例集, 技術情報協会, pp. 193-197, Nov. 2018.
• Christopher D. Windle, Soundarrajan Chandrasekaran, Hiromu Kumagai, Go Sahara, Keiji Nagai, Toshiyuki Abe, Murielle Chavarot-Kerlidou, Osamu Ishitani, Vincent Artero. Molecular Design of Photocathode Materials for Hydrogen Evolution and Carbon Dioxide Reduction, Molecular Technology: Energy Innovation, Wiley, pp. 251-286, June 2018.  Official location  
• Keiji Nagai. 光化学の事典 ４章 様々な化合物の光化学 4.4 その他の原子含有化合物 (5) 有機金属化合物の光化学, 朝倉書店, 2014.

International Conference (Reviewed)

• K. Nagai, T. Kuwabara, A. M. Fairus, M. Nakano, M. Karakawa, T. Taima, K. Takahashi, T. Abe. Visible Light Photocatalyst Prepared from Active Organic Photovoltaic Cell, PRiME 2020 (ECS, ECSJ, & KECS Joint Meeting), ECS Meeting Abstracts,, ECS, Vol. MA2020-02, Oct. 2020.  Official location  
• Keiji Nagai. Organophotocatalyst -photoenergy conversion by the use of organic semiconductors-, The Fifth International Symposium on Innovative Materials and Processes in Energy Systems, IMPRES2019, Oct. 2019.
• Keiji NAGAI, Christopher S. A. Musgrave, Shuntaro SHOJI, Kaori HASEGAWA, Nan LU. Target Fabrication and Supply for High Repetition Laser Application, The Eleventh International Conference on Inertial Fusion Science and Applications, IFSA2019, Sept. 2019.
• Keiji Nagai, Mohd Fairus Ahmad, Toshiyuki Abe. Micro- and Nano-Structure p-n Junction Based Organophotocatalyst Film, 1st International Conference on 4D Materials & Systems, ECS, Electrochemical Society, Aug. 2018.
• Keiji Nagai. Organophotocatalyst film, Advances in polymer science and technology (APA-17), Nov. 2017.
• Christopher S A Musgrave, Takehito Murakami, Rie Sato, Shuntaro Shoji, Kaori Hasegawa, Nan Lu, Tomokazu Iyoda, Keiji Nagai. Steps towards compact generation of 13.5 nm Extreme ultraviolet (EUV) light, Plasma Physics by Laser and Applications (PPLA 2017), July 2017.
• Keiji Nagai. Organophotocatalyst, 9th International Conference on Molecular Electronics and Bioelectronics, June 2017.
• Keiji Nagai. Bubble target for high repetition laser with minimum mass, 6th European Target Fabrication Workshop, May 2017.
• Christopher S A Musgrave, Takehito Murakami, Tomokazu Iyoda, Keiji Naga. Imaging plate analysis of Extreme Ultraviolet Light (EUV) from laser-produced plasmas, SPIE Advanced Lithography 2016, Feb. 2017.
• Keiji Nagai, Toshiyuki Abe. P-N junction based Organophotocatalyst, Japan-France Artificial Photosynthesis Symposium, Oct. 2016.
• Keiji Nagai. Mass-productive target fabrication for high repetition irradiation, Building a Target Network for Advanced Laser Light Sources, Aug. 2016.
• Keiji Nagai. Mass-productive target fabrication and its delivering for high repetition laser, The 1st Asia-Pacific User Meeting for the Helmholtz Internatonal Beamline for Extreme Fields (HIBEF 2016), June 2016.
• Keiji Nagai, Toshiyuki Abe, Tomokazu Iyoda. p-n junction based Organophotocatalysis, The 3rd Chemical Resources Laboratory forum International, Oct. 2015.
• Keiji Nagai, Ahmad Mohd Fairus Bin, Chiharu Shinozaki, Tomokazu Iyoda, Toshiyuki Abe. Full-spectrum-visible-light Heterogeneous Organophotocatalysis Enhanced by p-n-Semiconductor Biphasing and Multilayerization, The 7th International Conference on Green and Sustainable Chemistry and 4th JACI/GSI Symposium, July 2015.
• Keiji Nagai. Multilayerization of Organophotocatalyst Films that Efficiently Utilize Natural Sunlight, JSPS-ICC Meeting, June 2015.
• Keiji Nagai. p-n-junction-based organophotocatalyst films and their multilayerization, The 11th Korea-Japan Symposium on Frontier Photoscience, June 2015.
• Keiji Nagai. Organophotocatalyst Films and Their Multilayerization that Efficiently Utilize Natural Sunlight in a One-pass-flow Water Purification System, Energy Materials and Nanotechnology, June 2015.
• Keiji Nagai, Toshiyuki Abe, Tomokazu Iyoda. Organophotocatalyst Films and Their Multilayerization That Efficiently Utilize Natural Sunlight, 227th Electrochemical Society Meeting, May 2015.
• Shuai Zhang, Toshiyuki Abe, Tomokazu Iyoda, Takayoshi Norimatsu, Kenji Nagai. Organic Semiconductor Nanoparticles with Heterojunctions Composed of Fullerene C and Zinc Phthalocyanine and Their Application to Visible-Light-Responsive Photocatalysts, Transactions of Materials Research Society of Japan, Materials Research Society of Japan, Vol. 36, No. 2, Page 177-181, June 2011.  Official location  

International Conference (Not reviewed / Unknown)

• Keiji NAGAI. PHOTOCATALYST BY THE USE OF ORGANIC SEMICONDUCTORS, The Second International Conference on Nanoscience and Nanotechnology, ICNAN'19, Nov. 2019.
• Mohd Fairus Ahmad, Toshiyuki Abe, Keiji Nagai. An effect of charge localization in domain interface towards enhancement of photoanodic current of organic heterojunction photocatalyst, International CLS Forum on "Photo and Catalytic Science for Sustainable Society, Mar. 2018.
• Christopher Musgrave, Shuntaro Shoji, Nan Lu, Keiji Nagai. Generation of 13.5 nm Extreme Ultraviolet light (EUV); a materials perspective, International CLS Forum on "Photo and Catalytic Science for Sustainable Society, Mar. 2018.
• Mohd Fairus bin Ahmad, Toshiyuki Abe, Keiji Nagai. An effect of domain interface for the photoelectrochemistry of organic semiconductor heterojunction, The 2nd International Symposium on Recent Progress of Energy and Environmental Photocatalysis, Dec. 2017.

Domestic Conference (Not reviewed / Unknown)

• Keiji NAGAI Takayuki KUWABARA Mohd Fairus AHMAD Masahiro NAKANO Makoto KARAKAWA Tetsuya TAIMA Kohshin TAKAHASHI, Toshiyuki ABE, Mohd Fairus Bin Ahmad, Makoto Karakawa, Tetsuya Taima, Kohshin Takahashi, Masahiro Nakano, Toshiyuki Abe. Visible Light Photocatalyst prepared from Active Organic Photovoltaic Cell, THE INSTITUTE OF ELECTRONICS ,IEICE Technical Report, OME2019, No. 60, pp. 5-8, Jan. 2020.

Other Publication

• Keiji Nagai. エネルギー利得向上への新設計, Canapple ニュース, カーボン・エネルギーコントロール社会協議会, No. 102, Oct. 2019.  Official location  
• Keiji Nagai. Removal of odor source by the use of organic nanoparticle photocatalyst J-cat which is suspended in water or alcohol), Fragrance Journal, フレグランスジャーナル社, Vol. 46, No. 9, pp. 26-31, Sept. 2018.  Official location  
• Keiji Nagai. J-cat: A Metal-less, Full Visible Light Spectrum Responsive Photocatalyst, Convertech, 加工技術研究会, Vol. 43, No. 11, pp. 116-119, Nov. 2015.
• Keiji Nagai. Nanomaterials to Generate Extreme Ultraviolet light, Encyclopedia of Nanoscience and Nanotechnology, American Scientific Publishers, Vol. 18, pp. 75-83, May 2011.  Official location  
• Toshiyuki Abe, Keiji Nagai. p/n型有機半導体フィルムの固／液界面特性とその光触媒機能, Electrochemistry, 電気化学会, Vol. 78, No. 1, pp. 59-63, Jan. 2010.  Official location  
• Takayoshi Norimatsu, Keiji Nagai, Akifumi Iwamoto, Junji Kawanaka, Yoshiki Nakata. Current Status of Laser Fusion by Fast Ignition -Target for FIREX and PW laserLFEX-, J. Plasma Fusion Res., プラズマ・核融合学会, Vol. 85, No. 11, pp. 755-761, Nov. 2009.  Official location  
• Keiji Nagai, Takayoshi Norimatsu, Yasukazu Izawa, Tatsuhiko Yamanaka. Laser Fusion Target Nanomaterials, Encyclopedia of Nanoscience and Nanotechnology, American Scientific Publishers, Vol. 4, pp. 407-419, June 2004.

Patent

• Keiji Nagai. 有機系の微小構造体. Patent. Registered. 国立大学法人東京工業大学, 株式会社ファインテック, 学校法人法政大学. 2019/01/31. 特願2019-015602. 2019/08/08. 特開2019-130524. 特許第7352928号. 2023/09/21 2023.
• Keiji Nagai. ナノ粒子分散液の製造方法、ナノ粒子分散液製造装置およびフラレーン粒子分散液. Patent. Published. 国立大学法人東京工業大学. 2015/08/28. 特願2015-168940. 2017/03/02. 特開2017-043520. 2017.
• Keiji Nagai. ナノ粒子分散液の製造方法. Patent. Registered. 国立大学法人東京工業大学. 2015/08/28. 特願2015-168940. 2017/03/02. 特開2017-043520. 特許第6607488号. 2019/11/01 2019.
• Tomokazu Iyoda, Keiji Nagai, Hideaki Komiyama. 混合鎖星形共重合体. Patent. Published. 国立大学法人東京工業大学. 2013/11/05. 特願2013-228996. 2015/05/11. 特開2015-089894. 2015.
• Tomokazu Iyoda, Keiji Nagai, motonori komura. パターン形成方法. Patent. Registered. 国立大学法人東京工業大学, 日本電信電話株式会社. 2013/09/02. 特願2013-180970. 2015/03/16. 特開2015-050322. 特許第5924779号. 2016/04/28 2016.
• Keiji Nagai. 縮環芳香族誘導体組成物、光電変換素子、太陽電池、及び有機光触媒、並びに、縮環芳香族誘導体含有層の製造方法 . Patent. Registered. 国立大学法人東京工業大学. 2012/05/17. 特願2012-113458. 2013/11/28. 特開2013-237822. 特許第5866711号. 2016/01/15 2016.
• Keiji Nagai. p-n接合型粒子、及びその製造方法、並びに有機光触媒. Patent. Registered. 国立大学法人東京工業大学, 国立大学法人弘前大学. 2010/01/19. 特願2010-009360. 2011/08/04. 特開2011-147849. 特許第5688789号. 2015/02/06 2015.
• Keiji Nagai. 放射線源用ターゲット、その製造方法及び放射線発生装置. Patent. Registered. 国立大学法人東京工業大学. 2007/08/09. 特願2007-207453. 2009/02/26. 特開2009-043573. 特許第5234448号. 2013/04/05 2013.
• Keiji Nagai. 有機光触媒. Patent. Registered. 国立大学法人東京工業大学, 国立大学法人弘前大学. 2006/04/26. 特願2007-514770. 2008/12/18. 再表2006/115271. 特許第5182665号. 2013/01/25 2013.

Degree

• 高分子膜分散プローブの発光特性と電子移動及びエネルギー移動の解析,  Thesis,  Doctor (Science),  Waseda University,  1995/03/--, 

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