1. S. Watanabe, T. Asanuma, H. Hyodo, K. Soga, M. Matsumoto, ‘Micromolding in Capillaries for Calcination-Free Fabrication of Flexible Inorganic Phosphor Films Consisting of Rare-Earth-Ion-Doped Nanoparticles,’ LANGMUIR, 29 (2013) 11185-11191.
  2. N. Venkatachalam, T. Yamano,E. Hemmer, H. Hyodo, H. Kishimoto, K. Soga, ‘Er3+-Doped Y2O3 Nanophosphors for Near-Infrared Fluorescence Bioimaging Applications,’ JOURNAL OF THE AMERICAN CERAMIC SOCIETY, (2013) 1-7.
  3. E. Hemmer, N. Venkatchalam, H. Hyodo, A. Hattori, Y. Ebina, H. Kishimoto and K. SOGA, ‘Upconverting and NIR Emitting Rare Earth based Nanostructures for NIR-Bioimaging,’ NANOSCALE, (2013) 1-22.
  4. 小森谷健二，竹村裕，溝口博，曽我公平，兵藤宏，岸本英博，金子和弘, ‘近赤外線対応内視鏡実現のためのヘッドスキャニング機構による近赤外蛍光イメージング,’ 生体医工学, 51 (2013) 135-141.
  5. 渡部雅之，竹村裕，溝口博，兵藤宏，曽我公平，座古保，岸本英博，伊藤雅昭，金子和弘, ‘近赤外可視光複合内視鏡開発のための射影変換を用いたリアルタイム映像合成に関する研究,’ 日本機械学会ロボティクス・メカトロニクス講演会2013(ROBOMEC2013)講演論文集, (2013)
  6. 曽我公平, ‘近赤外励起ナノ蛍光体のバイオメディカルイメージング応用,’ YAKUGAKU ZASSHI-JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN, 133 (2013) 355-367.
  7. E. Hemmer, T. Yamano, H. Kishimoto, N. Venkatachalam, H. Hyodo, K. Soga, ‘Cytotoxic aspects of gadolinium oxide nanostructures for up-conversion and NIR bioimaging,’ ACTA BIOMATERIALIA, 9 (2013) 4734-4743.
  8. 曽我公平, ‘バイオイメージングのためのセラミックスナノ粒子,’ Journal of the Soceity of Inorganic Materials, Japan, 19 (2012) 493-499.
  9. H. Hyodo, A. Nezu, K. Soga, K. Kimura, ‘Self-compensation property of b-rhombohedral boron doped with high Li concentration”,’ SOLID STATE SCIENCES, 14 (2012) 1578-1583.
  10. E. Hemmer, I. Kumakiri, N. Lecerf, R. Bredsen, S. Barth, J. Altmayer, N. Donia, C. Cavelius, K. Soga and S. Mathur, ‘Nanostructured ZrO2 membranes prepared by liquid-injection chemical vapor deposition,’ MICROPOROUS AND MESOPOROUS MATERIALS, 163 (2012) 229-236.
  11. E. Hemmer, H. Takeshita, T. Yamano, T. Fujiki, Y. Kohl, K. Low, N. Venkatachalam, H. Hyodo, H. Kishimoto and K. Soga, ‘in vitro and in vivo investigations of upconversion and NIR emitting Gd2O3:Er3+,Yb3+ nanostructures for biomedical applications,’ JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE, 23 (2012) 2399-2412.
  12. M. Uo, Y. Nakajima, Y. Asakawa, T. Wada, T. Hongo, K. Soga, Y. Kogo, ‘Rare earth oxide containing filler for dental composite resin,’ Key Engineering Materials, 529-530 (2012) 512-515.
  13. S. Watanabe, H. Hyodo, H. Taguchi, K. Soga, Y. Takanashi, M. Matsumoto, ‘Calcination-Free Liftoff Photolithography of Mixed Dip-coated Films Consisting of Rare-Earth-Ion-Doped Nanoparticles on Plastic Sheets,’ JOURNAL OF OLEO SCIENCE, 61 (2012) 567-573.
  14. K. Soga, K. Tokuzen, K. Fukuda, H. Hyodo, E. Hemmer, N. Venkatachalm, H. Kishimoto, ‘Application of Ceramic/Polymer Conjugate Materials for Near Infrared Biophotonics,’ JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 25 (2012) 57-62.
  15. H. Yoshida, M. Kodo, K. Soga, T. Yamamoto, ‘Doping effect on sinterability of polycrystalline yttria: From the viewpoint of cation diffusivity,’ JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 32 (2012) 3103-3114.
  16. N. Venkatachalam, E. Hemmer, T. Yamano, H. Hyodo, H. Kishimoto, K. Soga, ‘Synthesis and toxicity assay of ceramic nanophosphors for bioimaging with near-infrared excitation,’ PROGRESS IN CRYSTAL GROWTH AND CHARACTERIZATION OF MATERIALS, 58 (2012) 121-134.
  17. 小森谷 健二,竹村 裕,溝口 博,曽我 公平,兵藤 宏,岸本 英博, 金子 和弘, ‘近赤外線利用可能な内視鏡を目指したヘッドスキャニング機構による画像検出,’ 日本機械学会 ロボティクス・メカトロニクス講演会2012講演論文集, (2012) 1A2-E01(1)-1A2-E01(4).
  18. T. Taniguchi, K. Soga, K. Tokuzen, K. Tsujiuchi, T. Kidokoro, K. Tomita, K. Katsumata, N. Matsushita, K. Okada, ‘NIR-excited NIR and visible luminescent properties of amphipathic YVO4: Er3+/Yb3+ nanoparticles,’ JOURNAL OF MATERIALS SCIENCE, 47 (2012) 2241-2247.
  19. 曽我公平, ‘アップコンバージョン発光粒子とその応用,’ ぶんせき, 2012 (2012) 37-44.
  20. 曽我公平, ‘「蛍光生物学」の最前線４　セラミックスナノ粒子を用いた近赤外励起蛍光バイオイメージング,’ DOJIN NEWS, 141 (2012) 6-11.
  21. S. Watanabe, H. Hyodo, H. Taguchi, K. Soga, Y. Takanashi, M. Matsumoto, ‘Calcination- and Etching-Free Photolithography of Inorganic Phosphor Films Consisting of Rare Earth Ion Doped Nanoparticles on Plastic Sheets,’ ADVANCED FUNCTIONAL MATERIALS, 21 (2011) 4264-4269.
  22. 大崎涼介, 丁 明, 竹村 裕, 兵藤 宏,　曽我 公平, 溝口 博, ‘屈折率を考慮した近赤外光を用いた乳がん細胞の三次元バイオイメージング,’ 第32回バイオメカニズム学術講演会(SOBIM 2011 in Osaka) 講演論文集, (2011) 243-244.
  23. H. Yoshida, K. Morita, B. N. Kim, K. Hiraga, K. Yamanaka, K. Soga and T. Yamamoto, ‘Low-Temperature Spark Plasma Sintering of Yttria Ceramics with Ultrafine Grain Size,’ JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 94 (2011) 3301-3307.
  24. E. Hemmer, T. Yamano, H. Kishimoto and K. Soga, ‘Gadolinium-containing inorganic nanostructures for biomedical applications: Cytotoxic aspects,’ Proc. 2010 International Conference on Nanoscience and Nanotechnology (ICONN), 2010 (2011) 225-229.
  25. R. Osaki, H. Takemura, M. Ding, H. Hyodo, K. Soga and H. Mizoguchi, ‘3D bioimaging sensor of breast cancer cell using rare-earth-doped ceramic nanophosphors and near-infrared,’ Proceedings of the 10th IEEE International Conference on Sensors, (2011) 1784-1787.
  26. R. Osaki, H. Takemura, M. Ding, H. Hyodo, K. Soga and H. Mizoguchi, ‘3D fluorescence bioimaging of breast cancer using rare-earth-doped ceramic nanophosphors and near-infrared,’ Proceedings of International Biomechanics Conference & Annual Meeting of Taiwanese Society of Biomechanics, (2011) TSB2011-056-.
  27. M. Kamimura, N. Kanayama, K. Tokuzen, K. Soga and Y. Nagasaki, ‘Near-infrared (1550 nm) in vivo bioimaging based on rare-earth doped ceramic nanophosphors modified with PEG-b-poly(4-vinylbenzylphosphonate),’ NANOSCALE, 3 (2011) 3705-3713.
  28. H. Hyodo, N. Sato, K. Kitano and K. Soga, ‘Surface Modification of Ceramic Phosphors by Atmospheric Pressure Plasma,’ JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 24 (2011) 429-433.
  29. T. Nagatochi, H. Hyodo, A.Sumiyoshi, K. Soga, Y. Sato, M. Terauchi, F. Esaka, K. Kimura, ‘Superconductivity in Li-doped a-rhombohedral boron”,’ PHYSICAL REVIEW B, 83 (2011) 184507-1-184507-5.
  30. 大崎 涼介，丁 明，兵藤 宏，曽我 公平，竹村 裕，溝口 博, ‘希土類含有セラミックスナノ粒子と近赤外光を用いた乳がん細胞の三次元バイオイメージング,’ 日本機械学会 ロボティクス・メカトロニクス講演会2011講演論文集, (2011) 2P2-H02(1)-2P2-H02(4).
  31. K. SOGA 曽我 公平, ‘Biomedical imaging with near infrared excitation: fundamental and applcations. NIR励起バイオメディカルイメージングとその応用,’ Journal of Japanese Society for Biomaterials, バイオマテリアル－生体材料－, 29 (2011) 95-103.
  32. B. Shamoradi, K. Namratha, K. Byrappa, K. Soga, S. Ananda, R. Somashekar, ‘Enhancement of the photocatalytic activity of modified ZnO nanoparticles with manganese additive,’ RESEARCH ON CHEMICAL INTERMEDIATES, 37 (2011) 329-340.
  33. K. TANABE, Kohei SOGA1, Shizuka HOSOI, Kazuaki OSUMI, Hideshi YAMAGUCHI, Tomoya URUGA and Kaoru KIMURA, ‘Low Critical Concentration of Metal?Insulator Transition of Vanadium Doped Amorphous Boron,’ JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80 (2011) 1-11.
  34. H. Akiyama, K. Tokuzen, H. Otsuka, K. Soga, F. Tashiro, ‘Application of liposome-encapsulated ceramic phoshpors for cancer cell imaging under near infrared excitation,’ Journal of Physics: Conference Series, 232 (2010) 012001-1-012001-4.
  35. E. Hemmerw, K. Soga, T. Konishi, T. Watanabe, T. Taniguchi, S. Mathur, ‘Influence of the Host Phase on the Vibrational Spectra of Europium-Doped Zirconia Prepared by Hydrothermal Processing,’ JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 93 (2010) 3873-3879.
  36. B. Shahmoradi, I. A. Ibrahim, N. Sakamoto, S. Ananda, T. N. G. Row, K. Soga, K. Byrappa, S. Parsons; Y. Shimizu, ‘In situ surface modification of molybdenum-doped organic?inorganic hybrid TiO2 nanoparticles under hydrothermal conditions and treatment of pharmaceutical effluent,’ ENVIRONMENTAL TECHNOLOGY, 31 (2010) 1213-1220.
  37. K. Soga, K. Tokuzen, K. Tsuji, T. Yamano, H. Hyodo and H. Kishimoto, ‘NIR Bioimaging: Development of Liposome-Encapsulated, Rare-Earth-Doped Y2O3 Nanoparticles as Fluorescent Probes,’ EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2010 (2010) 2673-2677.
  38. M. Kodo, K. Soga, H. Yoshida, T. Yamamoto, ‘Doping effect of divalent cations on sintering of polycrystalline yttria,’ JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 30 (2010) 2741-2747.
  39. 宇尾基弘，金森敏英，高橋正樹，亘理文夫，曽我公平，向後保雄, ‘希土類含有イットリアナノ微粒子の歯科材料への応用,’ 傾斜機能材料論文集ISBN978-4-9901902-6-2, 24 (2010) 76-81.
  40. T. Zako, H. Hyodo, K. Tsuji, K. Tokuzen, H. Kishimoto, M. Ito, K. Kaneko, M. Maeda and K. Soga, ‘Development of Near Infrared-Fluorescent Nanophosphors and Applications for Cancer Diagnosis and Therapy,’ JOURNAL OF NANOMATERIALS, 2010 (2010) 1-8.
  41. K. Soga and Y. Nagasaki, ‘Polyscale technology for developing near infrared fluorescence bioimaging system based on novel synthese approaches for rare-earth doped nanophosphors,’ MATERIALS RESEARCH INNOVATIONS, 14 (2010) 51-55.
  42. C. K. Chandrashenkar, B. Basavalingu, K. M. Lokantha Rai, S. Ananda, T. Tonthai, K. Soga and K. Byrappa, ‘Novel method of synthesis of R3+:YVO4 (where R=Nd, Er) crystals,’ MATERIALS RESEARCH INNOVATIONS, 14 (2010) 38-44.
  43. E. Hemmer, Y. Kohl, V. Colquhoun, H. Thielecke, K. Soga and S. Mathu, ‘Probing Cytotoxicity of Gadolinium Hydroxide Nanostructures,’ JOURNAL OF PHYSICAL CHEMISTRY B, 114 (2010) 4358-4365.
  44. Y. Kohl, E. Hemmer, K. Soga, S. Mathur and H. Thielecke, ‘Biocompatibility of Eu3+-doped Gadolinium Hydroxide and Oxide Nanorods,’ Terrae Rarae 2009, (2010) 1-9.
  45. K. Soga, K. Tokuzen, K. Tsuji, T. Yamano, N. Venkatachalam, H. Hyodo and H. Kishimoto, ‘Application of ceramic phosphors for near infrared biomedical imaging technologies,’ Proceedings of SPIE, 7598 (2010) 759807-1-759807-9.
  46. E. Hemmer, T. Yamano, H. Kishimoto and K. Soga, ‘Cytotoxicity of Gd2O3:Ln3+ Nanostructures and their Potential as Biomarkers,’ Terrae Rarae 2009, (2010) 1-10.
  47. Y. Kawasaki, Y. Gotoh, K. Tokuzen, M. Kamimura, T. Komeno, M. Tomatsu, R. Todoroki, Y. Nagasaki, K. Soga and F. Tashiro, ‘Selective Tumor Imaging by a Novel Tumor Specific Aralin-Infrared-to-Visible Phosphor Conjugate,’ Journal of Physics: Conference Series, 191 (2009) 012001-1-012001-4.
  48. N. Venkatachalam1, Y. Okumura, K. Soga, R. Fukuda and T. Tsuji, ‘Bioimaging of M1 Cells Using Ceramic Nanophosphors: Synthesis and Toxicity Assay of Y2O3 Nanoparticles,’ Journal of Physics: Conference Series, 191 (2009) 012002-1-012002-3.
  49. K. Soga, Y. Okumura, K. Tsuji and N. Venkatachalam, ‘Effect of K3PO4 addition as sintering inhibitor during calcination of Y2O3 nanoparticles,’ Journal of Physics: Conference Series, 191 (2009) 012003-1-012003-7.
  50. S. Hosoi, K Tanabe, H. Kim, K. Kirihara, K. Soga, K. Kimura, K. Kato and M. Takata, ‘Electron density distribution of b-rhombohedral boron constructed from icosahedral cluster”,’ Journal of Physics: Conference Series, 176 (2009) 12026-.
  51. M. Yamaguchi, Y. Ohishi, S. Hosoi, K. Soga and K. Kimura, ‘Metallic-covalent bonding conversion in boron icosahedral cluster solids studied using electron localizability indicator,’ Journal of Physics: Conference Series, 176 (2009) 12027-.
  52. M. Kodo, K. Soga, H. Yoshida and T. Yamamoto, ‘Low temperture sintering of polycrystalline yttria by transition metal ion doping,’ JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 117 (2009) 765-768.
  53. M. Uo, E. Kudo, A. Okada, K. Soga, Y. Kogo, ‘Preparation and Properties of Dental Composite Resin Cured under Near Infrared Irradiation,’ JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 22 (2009) 551-554.
  54. 曽我公平, ‘ポリスケールテクノロジーによる近赤外励起蛍光バイオイメージングシステムの開発,’ BUNSEKI KAGAKU, 58 (2009) 461-471.
  55. K. Tsujiuci, A. Okada, D. Matsuura, K. Soga, ‘Development of Flexible and Transparent Upconversion Display by Using Polymer-Ceramics Composite,’ JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 22 (2009) 541-546.
  56. N. Venkatachalam, Y. Saito and K. Soga, ‘Synthesis of Er3+ Doped Y2O3 Nanophosphors,’ JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 92 (2009) 1006-1010.
  57. M. Uo, T. Hasegawa, T. Akasaka, I. Tanaka, F. Munekane, M. Omori, H. Kimura, R. Nakatomi, K. Soga, Y. Kogo and F. Watari, ‘Multiwalled carbon nanotube monoliths prepared by spark plasma sintering (SPS) and their mechanical properties,’ BIO-MEDICAL MATERIALS AND ENGINEERING, 19 (2009) 11-17.
  58. T. Zako, H. Nagata, N. Terada, A. Utsumi, M. Sakono, M. Yohda, H. Ueda, K. Soga, M. Maeda, ‘Cyclic RGD peptide-labeled upconversion nanophosphors for tumor cell-targeted imaging,’ BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 381 (2009) 54-58.
  59. H. Hyodo, S. Araake, S. Hosoi, K. Soga, Y. Sato, M. Terauchi and K. Kimura, ‘Structure and electronic properties of Mg-doped b-rhombohedral boron constructed from icosahedral clusters”,’ Transactions of the Materials Research Society of Japan, 33 (2008) 303-306.
  60. B. Basavalingu, H. N. Girish, K. Byrappa, K. Soga, ‘Hydrothermal synthesis and characterization of orthorhombic yttrium aluminum perovskites (YAP),’ MATERIALS CHEMISTRY AND PHYSICS, 112 (2008) 723-725.
  61. 曽我公平・上村真生・長崎幸夫, ‘希土類含有セラミックスナノ粒子によるアップコンバージョン現象を利用した近赤外励起バイオイメージング,’ 応用物理, 77 (2008) 1458-1461.
  62. Y. Takahashi, T. Konishi, K. Soga and T. Fujirwara, ‘Origin of photpluminescence in suzukiite-type BaTiSi2O7,’ JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 116 (2008) 1104-1107.
  63. M. Kammimura, D. Miyamoto, Y. Saito, K. Soga, Y. Nagasaki, ‘Preparation of PEGylated upconversion nanophosphors with high dispersion stability under physiological conditions for near-infrared bioimaging,’ Transactions of the Materials Research Society of Japan, 33 (2008) 795-798.
  64. Y. Saito, K. Shimizu, M. Kamimura, H. Furusho, K. Soga and Y. Nagasaki, ‘Plate assay by UC emission from Y2O3: Er under near infrared excitation,’ Transactions of the Materials Research Society of Japan, 33 (2008) 803-806.
  65. Masao Kamimura, Daisuke Miyamoto, Yu Saito, Kohei Soga and Yukio Nagasaki, ‘Preparation of PEG and Protein Co-immobilized Upconversion Nanophosphors as Near-infrared Biolabeling Materials,’ JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 21 (2008) 183-187.
  66. D. Matsuura, T. Ikeuchi, and K. Soga, ‘Upconversion Luminescence of Colloidal Solution of Y2O3 Nano-particles Doped with Trivalent Rare-Earth Ions,’ JOURNAL OF LUMINESCENCE, 128 (2008) 1267-1270.
  67. M. Kamimura, D. Miyamoto, Y. Saito, K. Soga and Y. Nagasaki, ‘Design of Poly(ethylene glycol)/Streptavidin Coimmobilized Upconversion Nanophosphors and Their Application to Fluorescence Biolabeling,’ LANGMUIR, 24 (2008) 8864-8870.
  68. T. Zako, H. Nagata, N. Terada, M. Sakono, K. Soga, M. Maeda, ‘Improvement of dispersion stability and characterization of upconversion nanophosphors covalently modified with PEG as a fluorescence bioimaging probe,’ JOURNAL OF MATERIALS SCIENCE, 43 (2008) 5325-5330.
  69. 曽我公平, ‘近赤外バイオイメージングシステムの開拓,’ 金属, 7 (2008) 6-11.
  70. M. Kodo, K. Soga, H. Yoshida, T. Yamamoto, ‘Doping effect of transition metal Ions on sinterability of polycrystalline yttria,’ Proceedings of 2nd International Congress on Ceramics (ICC2), (2008) 1-6.
  71. H. Yoshida, K. Morita, B. N. Kim, K. Hiraga, M. Kodo, K. Soga and T. Yamamoto, ‘Densification of Nanocrystalline Yttria by Low Temperature Spark Plasma Sintering,’ JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 91 (2008) 1707-1710.
  72. K. Soga, T. Tsuji, F. Tashiro, J. Chiba, M. Oishi, K. Yoshimoto, Y. Nagasaki, K. Kitano and S. Hamaguchi, ‘Development of NIR Bioimaging Systems,’ Journal of Physics : Conference Series, 106 (2008) 012023-1-012023-5.
  73. K. Byrappa, A. S. Dayananda, C. P. Sajan, B. Basavalingu, M. B. Shayan, K. Soga, M. Yoshimura, ‘Hydrothermal preparation of ZnO:CNT and TiO2:CNT composites and their photocatalytic applications,’ JOURNAL OF MATERIALS SCIENCE, 43 (2008) 2348-2355.
  74. K. Byrappa, M. K. Devaraju, J. R. Paramesh, B. Basavalingu, K. Soga, ‘Hydrothermal synthesis and characterization of LaPO4 for bio-imaging phosphors,’ JOURNAL OF MATERIALS SCIENCE, 43 (2008) 2229-2233.
  75. H. Hyodo, S. Araake, S. Hosoi, K. Soga, Y. Sato, M. Terauchi, K. Kimura, ‘Structure and electronic properties of Mg-doped b-rhombohedral boron constructed from icosahedral clusters,’ PHYSICAL REVIEW B, 77 (2008) 024515-1-024515-8.
  76. T. Konishi, M. Shimizu, Y. Kameyama and K. Soga, ‘Fabrication of upconversion emissive LaOCl phosphors doped with rare-earth ions for bioimaging probes,’ JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 18 (2007) S183-S186.
  77. K. Soga, Y. Saito, K. Shimizu, Y. Okumura and T. Konishi, ‘Application of Rare-Earth Doped Ceramic Nanophoshpors for Bioimaging under NIR Excitation,’ Proceedings of Materials Science and Technology 2007, (2007) 617-621.
  78. T. Konishi, K. Shimizu, Y. Saito and K. Soga, ‘Surface Modification of Upconversion Nanophosphors with Poly(acrylic acid),’ JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 20 (2007) 11-15.
  79. K. Soga, A. Okada, Y. Saito, Y. Kameyama and T. Konishi, ‘Coating on Upconversion Emissive Nano-particles with Photocurig Resin,’ JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 20 (2007) 7-9.
  80. S. Hosoi, H. Kim, T. Nagata, K. Kirihara, K. Soga, K. Kimura, K. Kato, M. Tanaka, ‘Electron density distribution in derivative crystals of a-rhombohedral boron,’ JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 76 (2007) No. 044602 (8 pages)-.
  81. T. Ohgaki, Y. Nagumo, K. Soga and A. Yasumori, ‘Luminescence Property and Phase-Separation Texture of Phase-Separated Glasses and Glass-Ceramics in Mn-Doped ZnO-SiO2 System,’ JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 115 (2007) 201-204.
  82. T. Ohgaki, A. Higashida, K. Soga, and A. Yasumori, ‘Eu-Doped CaAl2Si2O8 Nanocrystalline Phosphors Crystallized from the CaO-Al2O3SiO2 Glass System,’ JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 154 (2007) J163-J166.
  83. K. Kirihara, K. Kawaguchi, Y. Shimizu, T. Sasaki, N. Koshizaki, K. Soga, K. Kimura, ‘Dependence of photocurrent in single-crystalline boron nanobelts on atmosphere,’ APPLIED PHYSICS LETTERS, 89 (2006) 243121-1-243121-3.
  84. K. Soga, Y. Saito, K. Shimizu, H. Nagata, T. Konishi and Y. Nagasaki, ‘Surface modification of rare-earth doped ceramic nano-phosphors for fluorescence bio-imaging,’ MRS Online Proccedings Library Archive, Symposium E, 951 (2006) E02-E03.
  85. K. Soga, T. Konishi, Y. Saito, K. Shimizu, ‘Application of Ceramic Nano-Phosphors for Bio-Imaging,’ Proc. 6th Asian BioCeramics Symp. (ABC2006), (2006) -.
  86. K. Kirihara, H. Hyodo, H. Fujihisa, Z. Wang, K. Kawaguchi, Y. Shimizu, T. Sasaki, N. Koshizaki, K. Soga, K. Kimura, ‘Mg-doping experiment and electrical transport measurement of boron nanobelts,’ JOURNAL OF SOLID STATE CHEMISTRY, 179 (2006) 2799-2804.
  87. K. Byrappa, A. Subramani, S. Ananda, K. Rai, M. Sunita, B. Basavalingu, K. Soga, ‘Impregnation of ZnO onto activated carbon under hydrothermal conditions and its photocatalytic properties,’ JOURNAL OF MATERIALS SCIENCE, 41 (2006) 1355-1362.
  88. K. Soga, A. Okada and M. Yamada, ‘Photocuring by Infrared Irradiation Using Upconversion Emission,,’ JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 19 (2006) 45-48.
  89. T. Kunishi, M. Yamada, K. Soga, D. Matsuura and Y. Nagasaki, ‘PEG-based Surface Modification on Upconversion Nanophosphors for Bio-imaging under IR Excitation,’ JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 19 (2006) 145-149.
  90. K. Ramaningaiah, C. Chndrashekar, K. Lakanatharai, B. Basavalingu, K. Soga, ‘Crystal growth and morphology of Nd:YVO4 under hydrothermal conditions,’ JOURNAL OF MATERIALS SCIENCE, 41 (2006) 1415-1421.
  91. K. Soga, R. Koizumi, M. Yamada, D. Matsuura and Y. Nagasaki, ‘Preparation of Polymer Composite Upconversion Phosphor from Inorganic Particle,’ JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 18 (2005) 73-74.
  92. K. Kirihara, Z. Wang, K. Kawaguchi, Y. Shimizu, T. Sasaki, N. Koshizaki, H. Hyodo, K. Soga, K. Kimura, ‘Electrical transport of tetragonal boron nanobelts,’ JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 23 (2005) 2510-2513.
  93. R. Koizumi, M. Yamada, K. Soga and Y. Nagasaki, ‘Preparation of Upconversion Emissive Inorganic Particles-polymer Composite,’ JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 18 (2005) 51-54.
  94. K. Kirihara, Z. Wang, K. Kawaguchi, Y. Shimizu, T. Sasaki, N. Koshizaki, K. Soga, and K. Kimura, ‘Temperature dependence of electrical conductance in single-crystalline boron nanobelts,’ APPLIED PHYSICS LETTERS, 86 (2005) 212101-212103.
  95. H. Inoue, K. Moriwaki, N. Tabata, K. Soga, A. Makshima and Y. Akasaka, ‘Simulation of the optical properties of Tm: ZBLAN glass II. Energy transfer between Tm3+ ions under single- and dual-wavelength excitation,’ JOURNAL OF NON-CRYSTALLINE SOLIDS, 336 (2004) 135-147.
  96. K. Soga, A. Oguri, S. Araake, K. Kimura, M. Terauchi and A. Furjiwara, ‘Li- and Mg-doing into Icosahedral Boron Crystals, alpha- and beta- Rhombohedral Boron, Targeting High Temperature Superconductivity: Structure and Electronic States,’ JOURNAL OF SOLID STATE CHEMISTRY, 177 (2004) 498-506.
  97. M. Terauchi, Y. Satoa, T. Nakayamab, A. Oguri, K. Soga and K. Kimura, ‘High-energy-resolution electron energy-loss spectroscopy study of the electronic structure of Cu- and Mg-Si-doped b-rhombohedral boron crystals,’ JOURNAL OF SOLID STATE CHEMISTRY, 177 (2004) 2916-2919.
  98. H. Inoue, K. Soga and A. Makishima, ‘Structure around Tm3+ ion in glass based on AlF3,’ JOURNAL OF NON-CRYSTALLINE SOLIDS, 331 (2003) 58-69.
  99. H. Inoue, S. Osawa, K. Soga, A. Makishima, ‘Energy transfer between Er3+ions in ZBLAN glass,’ PHYSICS AND CHEMISTRY OF GLASSES, 44 (2003) 422-430.
  100. K. Soga, W. Wang, R. E. Riman, J. B. Brown and K. R. Mikeska, ‘Luminescent properties of nanostructured Dy3+– and Tm3+-doped lanthanum chloride prepared by reactive atmosphere processing of sol-gel derived lanthanum hydroxide,’ JOURNAL OF APPLIED PHYSICS, 93
  101. H. Inoue, K. Soga and A. Makishima, ‘The effect of crystsl-fields on the optical properties of Pr:ZBLAN glass,’ JOURNAL OF NON-CRYSTALLINE SOLIDS, 325 (2003) 282-294.
  102. 曽我 公平、木村 薫, ‘ホウ素系正20面体クラスター固体の構造と物性－高温超伝導発現の可能性,’ セラミックス, 37 (2002) 277-282.
  103. K. Soga, Y. Suzuki, Y. Kojima, M. Takeda and K. Kimura, ‘Pulsed and modulated photoconduction on icosahedral Al-Cu-Fe quasicrystalline thin film,’ JOURNAL OF SOLID STATE CHEMISTRY, 342 (2002) 369-373.
  104. H. Inoue, K. Soga and A. Makishima, ‘Simulation of the optical properties of Er:ZBLAN glass,’ JOURNAL OF NON-CRYSTALLINE SOLIDS, 298 (2002) 270-286.
  105. K. Soga, J. Kaga, H. Inoue and A. Makishima, ‘Optical properties of new low-phonon SnF2-PbF2-ZnF2 glasses,’ JOURNAL OF NON-CRYSTALLINE SOLIDS, 315 (2002) 1-6.
  106. T. Konishi, K. Soga, H. Inoue, A. Makishima, ‘Synthesis and properties of glassy microcavities for morphology-dependent resonances through liquid-liquid phase separation,’ JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 85 (2002) 1151-1156.
  107. H. Inoue, K. Soga and A. Makishima, ‘Simulation of the optical properties of Tm:ZBLAN glass,’ JOURNAL OF NON-CRYSTALLINE SOLIDS, 306 (2002) 17-29.
  108. A. Makishima, Y. Orihara, K. Soga and H. Inoue, ‘Preparation and optical properties of TPPS-doped metal-carboxylate-salts glasses,’ Sience and Technology of Advanced Materials, 2 (2001) 405-410.
  109. K. Soga, H. Inoue and A. Makishima, ‘Effect of long range and nearest neighbor coordination on optical properties of Eu3+-doped fluorozirconate glasses,’ PHYSICS AND CHEMISTRY OF GLASSES, 42 (2001) 328-332.
  110. K. Soga, H. Inoue and A. Makishima, ‘Simulation of optical spectra of Eu3+ ion in fluorozirconate glasses by molecular dynamics simulation and point charge model of crystal field,’ JOURNAL OF APPLIED PHYSICS, 89 (2001) 3730-3735.
  111. T. Konishi, T. Asano, Y. Ishii, K. Soga, H. Inoue, ‘Effects of Eu2O3 on liquid-liquid phase separation of PbO-B2O3, BaO-B2O3 and SrO-B2O3 glasses,’ JOURNAL OF NON-CRYSTALLINE SOLIDS, 265
  112. M. Tsuda, K. Soga, H. Inoue and A. Makishima, ‘Comparison between the calculated and measured energy transfer rates of the 4S3/2 state in Er3+-doped fluorozirconate glasses,’ JOURNAL OF APPLIED PHYSICS, 88 (2000) 1900-1906.
  113. K. Soga, H. Inoue and A. Makishima, ‘Calculation and simulation of spectroscopic properties for rare-earth ions in chloro-fluorozirconate glasses,’ JOURNAL OF NON-CRYSTALLINE SOLIDS, 274 (2000) 69-74.
  114. T. Konishi, T. Asano, Y. Ishii, K. Soga, H. Inoue, S. Inoue, A. Makishima, H. Nishimura, S. Takasu and T. Sabato, ‘Thermal- blanket Effect Observed on Molten Glass in Drop Shaft Experiments,’ Journal of the Japan Society of Microgravity Application, 17 (2000) 91-97.
  115. M. Tsuda, K. Soga, H. Inoue, S. Inoue and A. Makishima, ‘Effect of Yb3+ doping on upconversion emission intensity and mechanism in Er3+/Yb3+-codoped fluorozirconate glasses under 800 nm excitation,’ JOURNAL OF APPLIED PHYSICS, 86 (1999) 6143
  116. M. Tsuda, K. Soga, H. Inoue, S. Inoue and A. Makishima, ‘Upconversion mechanism in Er3+-doped fluorozirconate glasses under 800 nm excitation,’ JOURNAL OF APPLIED PHYSICS, 85 (1999) 29-37.
  117. M. Shiraishi, A. Makishima, H. Inoue and K. Soga, ‘Optical properties of lead-tin fluorophosphate glass doped with porphyrin metallocomplexes,’ JOURNAL OF NON-CRYSTALLINE SOLIDS, 259 (1999) 165-169.
  118. S. Inoue, A. Makishima, H. Inoue, K. Soga, T. Konishi, T. Asano, ‘An approach to new glasses through phase separation,’ JOURNAL OF NON-CRYSTALLINE SOLIDS, 247 (1999) 1-8.
  119. H. Tsuboi, K. Soga, H. Inoue and A. Makishima, ‘Synthesis and fluorescence properties of Eu2+-complex doped SiO2 gels,’ JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 81 (1998) 1197-1202.
  120. H. Inoue, K. Soga and A. Makishima, ‘Structure and opetical properties of Eu3+-doped fluoroaluminate and fluorophosphate glasses,’ JOURNAL OF NON-CRYSTALLINE SOLIDS, 222 (1997) 212-220.
  121. S. Inoue, K. Wada, A. Nukui, M. Yamane, S. Shibata, A. Yasumori , Tetsuji Yano, Akio Makishima, Hiroyuki Inoue, Kohei Soga, ‘Estimation of phase separation rates of BaO-B2O3 melts under cooling,’ PHYSICS AND CHEMISTRY OF GLASSES, 38 (1997) 197-200.
  122. S. Inoue, A. Makishima, H. Inoue, K. Soga, T. Konishi, Tomoyoshi Asano and Yuu Ishii, ‘In situ observation of phase separation of barium borate melt in a stable immiscibility region under microgravity,’ JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 80 (1997) 2413-2417.
  123. K. Soga, M. Tsuda, S. Sakuragi, H. Inoue and A. Makishima, ‘Effects of chloride introduction on the optical properties and the upconversion emission with 980-nm excitation of Er3+ in ZBLAN fluoride glasses,’ JOURNAL OF NON-CRYSTALLINE SOLIDS, 222 (1997) 272-281.<
  124. 曽我公平, ‘ガラスの中での希土類,’ NEW GLASS, 11 (1996) 20-27.
  125. 井上 博之・曽我 公平・牧島 亮男, ‘ニューガラスの新展開に向けて,’ Inorganic Materials, 3 (1996) 95-101.
  126. H. Inoue, K. Soga, A. Makishima and I. Yasui, ‘Structure of fluorozirconate glass containing Cl ions,’ PHYSICS AND CHEMISTRY OF GLASSES, 36 (1995) 1-5.
  127. K. Soga, H. Inoue, A. Makishima and S. Inoue, ‘Energy level calculateion of the Eu3+ ion in fluorozirconate glassand Chemistry of Glasses,’ PHYSICS AND CHEMISTRY OF GLASSES, 36 (1995) 253-258.
  128. K. Soga, M. Uo, H. Inoue, S. Inoue and A. Makishima, ‘Site-dependent study of the optical properties of Eu3+ in pure and chlorine doped fluorozirconate glasses,’ JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 78 (1995) 129-132.
  129. S. Inoue, K. Soga, A. Nukui and A. Makishima, ‘Effect of Yb3+-codoping on the upconversion emission intensity in Er3+-doped ZBLAN fluoride glasses under 800-nm excitation,’ JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 77 (1994) 2433-2436.
  130. K. Soga, H. Inoue, A. Makishima and S. Inoue, ‘Fluorescence Properties of fluorozirconate glasses containing Eu3+ ions,’ JOURNAL OF LUMINESCENCE, 55 (1993) 17-24.
  131. S. Inoue, K. Soga and A. Makishima, ‘Effect of introduction of chloride on the upconversion emission intensity in Er- and Yb-codoped ZBLAN fluoride glasses,’ JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 76 (1993) 1591-1594.