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Original Article

  1. Ionic liquid-mediated dispersion and support of functional molecules on cellulose fibers for stimuli-responsive chromic paper devices
    H. Koga*, M. Nogi, A. Isogai
    ACS Applied Materials & Interfaces, in press
    DOI: 10.1021/acsami.7b14827
  2. Electrochemical behavior of Zn-xSn high-temperature solder alloys in 0.5M NaCl solution

    Z. Wang*, C. Chen*, J. Jiu, S. Nagao, M. Nogi, H. Koga, H. Zhang, G. Zhang, K. Suganuma

    Journal of Alloys and Compounds, 716(5), 231-239 (2017)
    DOI:10.1016/j.jallcom.2017.04.281

  3. Renewable wood pulp paper reactor with hierarchical micro/nanopores for continuous-flow nanocatalysis
    H. Koga*
    , N. Namba, T. Takahashi, M. Nogi, Y. Nishina
    ChemSusChem, 10(12), 2560-2565 (2017)(First published: 4 May 2017)
    DOI: 10.1002/cssc.201700576
  4. Hazy transparent cellulose nanopaper
    M.-C. Hsieh, H. Koga, K. Suganuma, M. Nogi*
    Scientific Reports, 7, 41590 (2017)
    doi:10.1038/srep41590
  5. High reliable and high conductive submicron Cu particle patterns fabricated by low temperature heat-welding and subsequent flash light sinter-reinforcement
    W. Li*, H. Zhang, Y. Gao, J. Jiu,* C.-f. Li, C. Chen, D. Hu, Y. Goya, Y. Wang, H. Koga, S. Nagao, K. Suganuma 
    Journal of Materials Chemistry C, 5, 1155-1164 (2017)
    DOI: 10.1039/C6TC04892G
  6. Biaxially stretchable silver nanowire conductive film embedded in a taro leaf-templated PDMS surface
    C. Wu*, J. Jiu, T. Araki, H. Koga, T. Sekitani, H. Wang, K. Suganuma
    Nanotechnology, 28, 01LT01 (2017)
    doi:10.1088/0957-4484/28/1/01LT01
  7. A High-sensitivity printed antenna prepared by rapid low-temperature sintering of silver ink
    H. Koga*, T. Inui, I. Miyamoto, T. Sekiguchi, M. Nogi, K. Suganuma
    RSC Advances, 6(87), 84363-84368 (2016)
    DOI: 10.1039/C6RA19687J
  8. All nanocellulose nonvolatile resistive memory
    U. Celano, K. Nagashima*, H. Koga, M. Nogi, F. Zhuge, G. Meng, Y. He, J. D. Boeck, M. Jurczak, W. Vandervorst, T. Yanagida*
    NPG Asia Materials, 8, e310 (2016)
    doi:10.1038/am.2016.144
  9. Stretchable and transparent electrodes based on pattered silver nanowire by laser-induced forward transfer for non-contacted printing technique
    T. Araki*, R. Mandamparambil, D. van Bragt, J. Jiu, H. Koga, J. van den Brand, T. Sekitani, J. den Toonder, K. Suganuma
    Nanotechnology, 27, 45LT02 (2016)
    doi:10.1088/0957-4484/27/45/45LT02
  10. One-step fabrication of stretchable copper nanowire conductors by a fast photonic sintering technique and its application in wearable devices
    S. Ding, J. Jiu*, Y. Gao, Y. Tian, T. Araki, T. Sugahara, S. Nagao, M. Nogi, H. Koga, K. Suganuma, H. Uchida
    ACS Applied Materials & Interfaces, 8(9), 6190-6199 (2016)
    DOI: 10.1021/acsami.5b10802
  11. Rapid self-assembly of ultrathin graphene oxide film and application to silver nanowires flexible transparent electrode
    C. Wu, J. Jiu*, T. Araki, H. Koga, T. Sekitani, H. Wang, K. Suganuma
    RSC Advances, 6, 15838-15845 (2016)
    DOI: 10.1039/C5RA24896E
  12. Fast, scalable, and eco-friendly fabrication of an energy storage paper electrode
    H. Koga*, H. Tonomura, M. Nogi, K. Suganuma, Y. Nishina
    Green Chem., 18, 1117-1124 (2016) 
    DOI: 10.1039/C5GC01949D

  13. Chemical modification of cellulose nanofibers for the production of highly thermal resistant and optically transparent nanopaper for paper devices
    H. Yagyu, T. Saito, A. Isogai, H. Koga, M. Nogi*
    ACS Applied Materials & Interfaces, 7(39), 22012-22017 (2015)

    http://dx.doi.org/10.1021/acsami.5b06915

  14. Highly reliable silver nanowire transparent electrode employing selectively patterned barrier shaped by self-masked photolithography
    J. Wang, J. Jiu*, T. Sugahara, S. Nagao, M. Nogi, H. Koga, P. He*, K. Suganuma, H. Uchida
    ACS Applied Materials & Interfaces, 7(41), 23297-23304 (2015)
    DOI: 10.1021/acsami.5b07619
  15. Laser-induced forward transfer of high-viscosity silver precursor inks for non-contact printed electronics
    T. Inui, R. Mandamparambil*, T. Araki*, R. Abbel, H. Koga, M. Nogi, K. Suganuma
    RSC Advances, 5, 77942-77947 (2015)
    DOI: 10.1039/C5RA14119B
  16. Targeted kinetic strategy for improving the thermal conductivity of epoxy composite containing percolating multi-layer graphene oxide chains
    T. Zhou*, H. Koga, M. Nogi, T. Sugahara, S. Nagao, T. T. Nge, K. Suganuma, H.-W. Cui, F. Liu, Y. Nishina
    eXPRESS Polymer Letters, 9(7), 608-623 (2015)

    DOI: 10.3144/expresspolymlett.2015.57
  17. The effect of light and humidity on the stability of silver nanowire transparent electrodes
    J. Jiu*, J. Wang, T. Sugahara, S. Nagao, M. Nogi, H. Koga, K. Suganuma, M. Hara, E. Nakazawa, H. Uchida
    RSC Advances, 5, 27657-27664 (2015)
    DOI: 10.1039/C5RA02722E
  18. Facile identification of the critical content of multi-layer graphene oxide for epoxy composite with the optimal thermal properties
    T. Zhou*, S. Nagao, T. Sugahara, H. Koga, M. Nogi, K. Suganuma, T. T. Nge, Y. Nishina
    RSC Advances, 5, 20376-20385 (2015)
    DOI: 10.1039/C4RA15881D
  19. Highly sensitive and flexible pressure sensor based on silver nanowires filled elastomeric interlayer and silver nanowires electrodes
    J. Wang, J. Jiu*, M. Nogi, T. Sugahara, S. Nagao, H. Koga, P. He,* K. Suganuma
    Nanoscale, 7, 2926-2932 (2015)

    DOI: 10.1039/C4NR06494A
  20. The role of Zn precipitates and Cl- anions in pitting corrosion of Sn-Zn solder alloys

    J.-C. Liu*, S. W. Park, S. Nagao, H. Koga, M. Nogi, J.-S. Ma, G. Zhang, K. Suganuma

    Corrosion Science, 92, 263-271 (2015)
    doi:10.1016/j.corsci.2014.12.014

  21. A Miniaturized flexible antenna printed on high dielectric constant nanopaper composite
    T. Inui, H. Koga*, M. Nogi*, N. Komoda, K. Suganuma
    Advanced Materials, 27(6), 1112-1116 (2015)
    DOI: 10.1002/adma.201404555
  22. Silver nanowire electrodes: Conductivity improvement without post-treatment and application in capacitive pressure sensors
    J. Wang, J. Jiu*, T. Araki, M. Nogi, T. Sugahara, S. Nagao, H. Koga, P. He*, K. Suganuma
    Nano-Micro Letter, 7(1), 51-58 (2015)
    doi:10.​1007/​s40820-014-0018-0
  23. Nanofibrillar chitin aerogels as renewable base catalysts
    Y. Tsutsumi, H. Koga, Z.-D. Qi, T. Saito, A. Isogai*
    Biomacromolecules, 15(11), 4314-4319 (2014)
    DOI: 10.1021/bm501320b
  24. Cellulose nanofiber paper as an ultra flexible nonvolatile memory
    K. Nagashima, H. Koga, U. Celano, F. Zhuge, M. Kanai, S. Rahong, G. Meng, Y. He, J. D. Boeck, M. Jurczak, W. Vandervorst, T. Kitaoka, M. Nogi, T. Yanagida*
    Scientific Reports, 4, 5532 (2014)
    doi:10.1038/srep05532
  25. Sol-gel-derived high-performance stacked transparent conductive oxide thin films
    T. Sugahara*, Y. Hirose, S. Cong, H. Koga, J. Jiu, M. Nogi, S. Nagao, K. Suganuma
    Journal of the American Ceramic Society, 97(10), 3238-3243 (2014)
    DOI: 10.1111/jace.13116
  26. Uniformly connected conductive networks on cellulose nanofiber paper for transparent paper electronics
    H. Koga*, M. Nogi*, N. Komoda, T. T. Nge, T. Sugahara, K. Suganuma
    NPG Asia Materials, 6, e93 (2014)
    doi:10.1038/am.2014.9
  27. Facile synthesis of very-long silver nanowires for transparent electrodes
    J. Jiu*, T. Araki, J. Wang, M. Nogi, T. Sugahara, S. Nagao, H. Koga, K. Suganuma, E. Nakazawa, M. Hara, H. Uchida, K. Shinozaki
    J. Mater. Chem. A, 2(18), 6326-6330 (2014)
    DOI: 10.1039/C4TA00502C
  28. Transparent nanopaper-based flexible organic thin-film transistor array
    Y. Fujisaki*, H. Koga, Y. Nakajima, M. Nakata, H. Tsuji, T. Yamamoto, T. Kurita, M. Nogi, N. Shimidzu
    Advanced Functional Materials, 24(12), 1657-1663 (2014)
    DOI: 10.1002/adfm.201303024
  29. Low haze transparent electrodes and highly conducting air dried films with ultra-long silver nanowires synthesized by one-step polyol method
    T. Araki*, J. Jiu, M. Nogi, H. Koga, S. Nagao, T. Sugahara, K. Suganuma
    Nano Research, 7(2), 236-245 (2014)
    DOI 10.1007/s12274-013-0391-x
  30. Electrically conductive bacterial cellulose composite membranes produced by the incorporation of graphite nanoplatelets in pristine bacterial cellulose membranes
    T. Zhou*, D. Chen, J. Jiu, T. T. Nge, T. Sugahara, S. Nagao, H. Koga, M. Nogi, K. Suganuma, X. Wang, X. Liu, P. Cheng, T. Wang, D. Xiong
    Express polymer letters, 7(9) 756-766 (2013)
    DOI: 10.3144/expresspolymlett.2013.73
  31. Cu salt ink formulation for printed electronics using photonic sintering
    T. Araki, T. Sugahara*, J. Jiu, S. Nagao, M. Nogi, H. Koga, H. Uchida, K. Shinozaki, K. Suganuma
    Langmuir, 29(35), 11192-11197 (2013)
    DOI: 10.1021/la402026r
  32. Direct synthesis of gold nanocatalysts on TEMPO-oxidized pulp paper containing aldehyde groups
    A. Azetsu, H. Koga, L.-Y. Yuan, T. Kitaoka*
    BioResources8(3) 3706-3717 (2013)
    URL: http://www.bioresources.com/
  33. Transparent, conductive and printable composites consisting of TEMPO-oxidized nanocellulose and carbon nanotube
    H. Koga*, T. Saito, T. Kitaoka, M. Nogi, K. Suganuma, A. Isogai
    Biomacromolecules, 14(4), 1160-1165 (2013)
    DOI: 10.1021/bm400075f
  34. On-paper synthesis of nickel nanoparticles and catalytic propane steam reforming for efficient hydrogen production
    S. Miura, H. Koga, T. Kitaoka*, H. Wariishi
    Heat Transfer Engineering, 34(11-12), 889-895 (2013)
    DOI: 10.1080/01457632.2012.752670
  35. Paper-immobilized enzyme as a green microstructured catalyst
    H. Koga*, T. Kitaoka, A. Isogai
    Journal of Materials Chemistry, 22(23), 11591-11597 (2012)
    DOI: 10.1039/c2jm30759f
  36. Topological loading of Cu(I) catalysts onto crystalline cellulose nanofibrils for the Huisgen click reaction
    H. Koga*, A. Azetsu, E. Tokunaga, T. Saito, A. Isogai, T. Kitaoka
    Journal of Materials Chemistry, 22(12), 5538-5542 (2012)
    DOI: 10.1039/c2jm15661j
  37. Synthesis and catalytic features of hybrid metal nanoparticles supported on cellulose nanofibers
    A. Azetsu, H. Koga*, A. Isogai, T. Kitaoka*
    Catalysts, 1(1), 83-96 (2011)
    DOI: 10.3390/catal1010083
  38. In situ synthesis of bimetallic hybrid nanocatalysts on a paper-structured matrix for catalytic applications
    H. Koga*, Y. Umemura, T. Kitaoka
    Catalysts, 1(1), 69-82 (2011)
    DOI: 10.3390/catal1010069
  39. Design of catalyst layers by using paper-like fiber/metal nanocatalyst composites for efficient NOx reduction
    H. Koga*, Y. Umemura, T. Kitaoka
    Composites Part B: Engineering, 42(5), 1108-1113 (2011)
    DOI: 10.1016/j.compositesb.2011.03.023
  40. In situ modification of cellulose paper with amino groups for catalytic applications
    H. Koga*, T. Kitaoka, A. Isogai
    Journal of Materials Chemistry, 21(25), 9356-9361 (2011)
    DOI: 10.1039/c1jm10543d
  41. Activated carbon water purification filter prepared by wet molding with a dual polyelectrolyte retention system
    H. Koga*, T. Kitaoka
    Sen’i Gakkaishi, 67(4), 81-85 (2011)
    URL: http://www.jstage.jst.go.jp/
  42. One-step synthesis of gold nanocatalysts on a microstructured paper matrix for the reduction of 4-nitrophenol
    H. Koga*, T. Kitaoka
    Chemical Engineering Journal, 168(1), 420-425 (2011)
    DOI: 10.1016/j.cej.2010.08.073
  43. Topochemical synthesis and catalysis of metal nanoparticles exposed on crystalline cellulose nanofibers
    H. Koga, E. Tokunaga, M. Hidaka, Y. Umemura, T. Saito, A. Isogai, T. Kitaoka
    Chemical Communications, 46(45), 8567-8569 (2010)
    DOI: 10.1039/c0cc02754e
  44. NOx reduction over paper-structured fiber composites impregnated with Pt/Al2O3 catalyst for exhaust gas purification
    Koga H.*, Ishihara H., Kitaoka T., Tomoda A., Suzuki R., Wariishi H.
    Journal of Materials Science, 45(15), 4151-4157 (2010)
    DOI: 10.1007/s10853-010-4504-6
  45. In situ synthesis of platinum nanocatalysts on a microstructured paperlike matrix for the catalytic purification of exhaust gases
    H. Koga, Y. Umemura, A. Tomoda, R. Suzuki, T. Kitaoka*
    ChemSusChem, 3(5), 604-608 (2010)
    DOI: 10.1002/cssc.200900277
  46. Paper-structured catalyst for catalytic NOx removal from combustion exhaust gas
    H. Ishihara, H. Koga, T. Kitaoka*, H. Wariishi, A. Tomoda, R. Suzuki
    Chemical Engineering Science, 65(1), 208-213 (2010)
    DOI: 10.1016/j.ces.2009.05.042
  47. Influence of a fiber-network microstructure of paper-structured catalyst on methanol reforming behavior
    H. Koga*, T. Kitaoka, M. Nakamura, H. Wariishi
    Journal of Materials Science, 44(21), 5836-5841 (2009)
    DOI: 10.1007/s10853-009-3823-y
  48. On-paper synthesis of Au nanocatalysts from Au(III) complex ions for low-temperature CO oxidation
    H. Koga, T. Kitaoka*, H. Wariishi
    Journal of Materials Chemistry, 19(29), 5244-5249 (2009)
    DOI: 10.1039/b905818d
  49. Paper-structured fiber composites impregnated with platinum nanoparticles synthesized on a carbon fiber matrix for catalytic reduction of nitrogen oxides
    H. Koga, Y. Umemura, H. Ishihara, T. Kitaoka*, A. Tomoda, R. Suzuki, H. Wariishi
    Applied Catalysis B: Environmental, 90(3-4), 699-704 (2009)
    DOI: 10.1016/j.apcatb.2009.05.002
  50. In situ synthesis of silver nanoparticles on zinc oxide whiskers incorporated in a paper matrix for antibacterial applications
    H. Koga, T. Kitaoka*, H. Wariishi
    Journal of Materials Chemistry, 19(15), 2135-2140 (2009)
    DOI: 10.1039/b820310e
  51. In situ synthesis of Cu nanocatalysts on ZnO whiskers embedded in a microstructured paper composite for autothermal hydrogen production
    H. Koga, T. Kitaoka*, H. Wariishi
    Chemical Communications, -(43), 5616-5618 (2008)
    DOI: 10.1039/b812216d
  52. Paper-structured catalyst with porous fiber-network microstructure for autothermal hydrogen production
    H. Koga, S. Fukahori, T. Kitaoka*, M. Nakamura, H. Wariishi
    Chemical Engineering Journal, 139(2), 408-415 (2008)
    DOI: 10.1016/j.cej.2007.11.042
  53. Steam reforming behavior of methanol using paper-structured catalysts: Experimental and computational fluid dynamic analysis
    S. Fukahori, H. Koga, T. Kitaoka*, M. Nakamura, H. Wariishi
    International Journal of Hydrogen Energy, 33(6), 1661-1670 (2008)
    DOI: 10.1016/j.ijhydene.2007.12.063
  54. Hydrogen production from methanol using a SiC fiber-containing paper composite impregnated with Cu/ZnO catalyst
    S. Fukahori, H. Koga, T. Kitaoka*, A. Tomoda, R. Suzuki, H. Wariishi
    Applied Catalysis A: General, 310(-), 138-144 (2006)
    DOI: 10.1016/j.apcata.2006.05.032
  55. Autothermal reforming of methanol using paper-like Cu/ZnO catalyst composites prepared by a papermaking technique
    H. Koga, S. Fukahori, T. Kitaoka*, A. Tomoda, R. Suzuki, H. Wariishi
    Applied Catalysis A: General, 309(2), 263-269 (2006)
    DOI: 10.1016/j.apcata.2006.05.014