Publications

(REFEREED JOURNAL PAPERS)

113. "Smart walking cane based on triboelectric nanogenerators for assisting the visually impaired"

     Z. Yang, M. Gao, J. Choi, Nano Energy, Vol. 124, 2024, pp.  109485

112."Triboelectric Nanogenerators for Preventive Health Monitoring" 

     M. Gao, Z. Yang, J. Choi, C. Wang, G. Dai, J. Yang, Nanomaterials, Vol. 24, No. 4, 2024, pp. 336 (26pp). 

111. "ダイヤモンドライクカーボン製の超撥水性表面におけるfakir水滴及び凝縮水滴のCassie-Baxter状態からWenzel状態への濡れ転移の抑制" 

     髙橋, Shamim, 徐, 崔, 大宮司, 日本冷凍空調学会論文集, 2023, pp. . 

110. "Tribochemical Investigation of Cr-Doped Diamond-Like Carbon with a MoDTC-Containing Engine Oil under Boundary Lubricated Condition" 

     S. M. Bae,  S. Horibata, Y. Miyauchi, J. Choi, Tribology International, Vol. 188, 2023, pp. 108849 (11pp). 

109."AI-enabled metal-polymer plain bearing based on the triboelectric principle" 

     M. Gao, T. Sun, Y. Li, Z. Zhang, C. Lee,  J. Choi, Advanced Functional Materials, 2023, pp. 2304070 (11pp). 

108."Enhancement of output power and durability of DLC-based sliding-TENG modified with self-assembled monolayers" 

     J. Zhou, G. Mang, J. Choi, ACS Applied Electronic Materials, Vol. 5, No. 5, 2023, pp.  2853-2861. 

107."Suppression of wetting transition on evaporative fakir droplets by using slippery superhydrophobic surfaces with low depinning force" 

     J. A Shamim, Y. Takahashi, A. Goswami, N. Shaukat, W-L. Hsu, J. Choi, H. Daiguji, Scientific Report, Vol. 13, 2023, pp. 2368 (14pp).  

106."Triboelectric Nanogenerator with Enhanced Output and Durability based on Si-DLC films" 

    M. Gao, S.B. Kim, Y. Li,  J. Choi, Nano Energy, Vol. 105, 2023, pp. 107997. 

105."Synthesis of N-doped carbon quantum dots as lubricant additive to enhance the tribological behavior of MoS2 nanofluid" 

     J. He, J. Sun, J. Choi, C. Wang, D. Su, Friction, Vol. 11, No. 3, 2023, pp. 441-459. 

104."Triboelectric pad journal bearing for self-powered condition monitoring" 

    M. Gao, Y. Li,  J. Choi, Nano Energy, Vol. 103, 2022, pp. 107581 (10pp). 

103."Effect of water adsorption layers on the friction properties of fluorinated amorphous carbon films in ambient air" 

   T. Yonezawa, T. Ishikawa, J. Choi, Langmuir, Vol. 38, No. 42, 2022, pp. 12894-12904. 

102."Adhesion strength of amorphous carbon films deposited on a trench sidewall" 

    K. Toyoshima, A. Farghali, J. Choi, Coatings, Vol. 12, 2022, pp.1220 (12pp). 

101."Scalable monolayer-functionalized nanointerface for thermal conductivity enhancement in copper/diamond composite" 

    B. Xu, S. Hung, S. Hu, C. Shao, R. Guo, J. Choi, T. Kodama, F. Chen, J. Shiomi, Carbon, Vol. 175, 2021, pp. 299-306. 

100."Effect of water adsorption on the frictional properties of hydrogenated amorphous carbon films in various relative humidity" 

    T. Ishikawa, J. Choi, Langmuir, Vol. 37, 2021, pp. 1012-1024.   

99."Formation of large-area closely packed carbon onions film by plasma-based ion implantation" 

    N. Matsumoto, H. Kinoshita, J. Choi, T. Kato, Scientific Report, Vol. 10, 2020, pp. 10037 (9pp).  

98."Development of highly durable sliding triboelectric nanogenerator using diamond-like carbon films" 

    S. H. Ramaswamy,  R. Kondo, W. Chen, K. Fukushima, J. Choi, Tribology Online, Vol. 15, No. 2, 2020, pp. 89-97.  

97. "Atomic-scale insights into the interfacial instability of superlubricity in hydrogenated amorphous carbon films" 

    X. Chen, X. Yin, W. Qi, C. Zhang, J. Choi, S. Wu, R. Wang, J. Luo, Science Advances, Vol. 6, 2020, eaay 1272.  

96. "Ultra-low friction of a-C:H films enabled by lubrication of nanodiamond and graphene in ambient air" 

    P. Huang, W. Qi, X. Yin, J. Choi, X. Chen, J. Tian, J. Xu, H. Wu, J. Luo, Carbon, Vol. 154, 2019, pp. 203-210.  

95. "Investigation of diamond-like carbon films as a promising dielectric material for triboelectric nanogenerator " 

    S. H. Ramaswamy, J. Shimizu, W. Chen, R. Kondo, J. Choi, Nano Energy, Vol. 60, 2019, pp. 875-885.  

94. "Effect of precursor gas on the structure and mechanical properties of hydrogenated amorphous carbon films deposited on a trench sidewall" 

    Y. Hirata, K. Kitamura, T. Ishikawa, J. Choi, Journal of Applied Physics, Vol. 125, 2019, pp. 065306 

93. "The effect of microstructure on the tribological properties of a-C:H films"

    T. Ishikawa, J. Choi, Diamond and Related Materials, Vol. 89, 2018, pp. 94-100.

92. "Characterization of diamond-like carbon films prepared using various source gases by plasma-based ion implantation and deposition"

    S. Nakao, J. Choi, T. Sonoda, S. Kotake, Y. Yamada, Surface and Coatings Technology, Vol. 355, 2018, pp. 136-142.

91. "Analysis of microstructure and surface morphology of a-C:H films deposited on a trench target"

    Y. Hirata, T. Ishikawa, J. Choi, S. Sasaki, Diamond and Related Materials, Vol. 83, 2018, pp. 1-7.

90. "メタンプラズマを用いて作成したa-C:H膜の内部構造とその摩擦特性" 

    石川功, 藤田右京, 崔埈豪,  材料試験技術, Vol. 63, No. 1, 2018, pp. 22-27.

89. "Macroscale tribological properties of fluorinated graphene" 

    K. Matsumura, S. Chiashi, S. Maruyama,  J. Choi,  Applied Surface Science, Vol. 432, 2018, pp. 190-195.

88. "Effect of Ar+ ion assist on the properties of a-C:H films deposited on a trench" 

     Y. Hirata, K. Onishi, J. Choi,  Thin Solid Films, Vol.  631, 2017, pp. 57-63.

87. "Structure and mechanical properties of a-C:H films deposited on a three-dimensional target: Comparative study on target scale and aspect ratio" 

     Y. Hirata, J. Choi,  Journal of Physics D: Applied Physics, Vol. 50, 2017, pp. 155204(9pp).

86. "ラマン分光法によるDLC膜の機械特性評価および予測（第2報）―種々の原料ガスを用いてバイポーラPBII&D法により作成したDLC膜―"

     崔埈豪, 日比貴之, 古野晃久, 川口雅弘, 加藤孝久,  トライボロジスト, Vol. 62, No. 3, 2017, pp. 76-83.

85. "a-C:H 膜の内部構造と摩擦特性の相関"

     石川功, 崔埈豪,  トライボロジスト, Vol. 62, No. 2, 2017, pp.  122-128.

84. "Deposition of a-C:H films  on inner surface of high-aspect-ratio microchannel" 

     Y. Hirata,  J. Choi,  Journal of Applied Physics, Vol. 120, 2016, pp. 065305(7pp).

83. "Load dependent frictional response of vertically aligned single-walled carbon nanotube films" 

     A. S. Westover, J. Choi, K. Cui, T. Ishikawa, T. Inoue, R. Xiang, S. Chiashi, T. Kato, S. Maruyama, C. L. Pint,  Scripta Materialia, Vol. 125, 2016, pp. 63-67.

82. "Deposition of a-C:H films  on a nanotrench pattern by bipolar PBII&D" 

     Y. Hirata, Y. Nakahara, K. Nagato, J. Choi,  Journal of Physics D: Applied Physics, Vol. 49, 2016, pp. 245303(10pp).

81. "Structural changes of hydrogenated amorphous carbon films deposited on steel rods" 

     J. Choi, T. Hatta,  Applied Surface Science, Vol. 357, 2015, pp. 814-818.

80. "Microstructure of a-C:H films prepared on a microtrench and analysis of ions and radicals behavior" 

     Y Hirata, J Choi, Journal of Applied Physics, Vol. 118, 2015, pp. 085305(9pp).

79. "DLC coating on a trench-shaped target by bipolar PBII "   

     Y Hirata, T Kato, J Choi, International Journal of Refractory Metals and Hard Materials, Vol. 49, 2015, pp. 392-399.

78. "DLC coating on a micro-trench by bipolar PBII&D and analysis of plasma behaviour"

    W Park, H Tokioka, M Tanaka, J Choi, Journal of Physics D: Applied Physics, Vol. 47, 2014, pp. 335306(8pp).

77. "Laser-assisted replication of large-area nanostructures"

    K Nagato, K Takahashi, T Sato, J Choi, T Hamaguchi, M Nakao, Journal of Materials Processing Technology, Vol. 214, 2014, pp. 2444-2449.

76. "Synthesis and characterization of carbon nanoparticle films prepared by plasma-based ion implantation"

    S Sawai, Y Nakahara, N Matsumoto, J Choi, T Kato, M Kawaguchi, Surface and Interface Analysis, Vol. 46, 2014, pp. 961-965.

75. "古典分子動力学法を用いた水素フリーDLC 膜における表面構造のナノスケール解析"

  澤井周, 熊谷知久, 崔埈豪, 加藤孝久, トライボロジスト, Vol. 59, No. 2, 2014, pp. 110-117.

74. "バイポーラPBII法によるトレンチ形状物へのDLC成膜"

  平田祐樹, 朴元淳, 崔埈豪, 加藤孝久, トライボロジスト, Vol. 58, No. 11, 2013, pp. 841-847.

73. "Structural and environmental dependence of superlow friction in ion vapor deposited a-C:H:Si films for solid lubrication application"

   X Chen, T Kato, M Kawaguchi, M Nosaka, J Choi, Journal of Physics D: Applied Physics, Vol. 46, 2013, pp. 255304(11pp).

72. "ラマン分光法によるDLC膜の機械特性評価および予測（第1報）―トルエン原料ガスを用いたバイポーラPBII&D法により作成したDLC膜―"

  崔埈豪, 石井啓資, 加藤孝久, 川口雅弘, トライボロジスト, Vol. 58, No. 8, 2013, pp. 596-602.

71. "Mechanical properties and thermal stability of SiBCN films prepared by ion beam assisted sputter deposition"

   J Choi, N Hayashi, T Kato, M Kawaguchi, Diamond and Related Materials, Vol. 34, 2013, pp. 95-99.

70. "Nitriding of high speed steel by bipolar PBII for improvement in adhesion strength of DLC films"

   J Choi, K Soejima, T Kato, M Kawaguchi, W Lee, Nuclear Instruments & Methods in Physics Research B, Vol. 272, 2012, pp. 357-360 

69. "Low temperature Si-DLC coatings on fluoro rubber by a bipolar pulse type PBII system"

 M Ikeyama, H Masuda, T Miyajima,  J Choi, Surface and Coatings Technology, Vol. 206, 2011, pp. 999-1002.

68. "Structural and mechanical properties of DLC films prepared by bipolar PBII&D"

    J Choi, K Ishii, T Kato, M Kawaguchi, W Lee, Diamond and Related Materials, Vol. 20, 2011, pp. 845-848.

67. "Nanostructural interpretation for elastic softening of amorphous carbon induced by the incorporation of silicon and hydrogen atoms"

    T Kumagai, S Sawai, J Choi, S Izumi, T Kato, Journal of Applied Physics, Vol. 107, 2010, pp. 124315-1-124315-7.

66. "シリコン含有DLC膜上の自己組織化単分子膜形成および摩擦特性"

    崔埈豪, 桜井健一, 加藤孝久, 川口雅弘, トライボロジスト, Vol. 55, No. 8, 2010, pp. 44-50. 

65. "Structures and phonon properties of nanoscale fractional graphitic structures in amorphous carbon determined by molecular simulations"

    T Kumagai, J Choi, S Izumi, T Kato, Journal of Applied Physics, Vol. 107, 2010, pp. 104307(6pp).

64. "Observation of self-assembled monolayers on diamond-like carbon films: agglomeration of self-assembled FDTS molecules"

    J Choi, K Sakurai, T Kato, Surface and Interface Analysis, Vol.  , 2010, pp. 1373-1376. 

63. "Effects of Nitrogen Gas Ratio on Composition and Microstructure of BCN Films Prepared by RF Magnetron Sputtering"

    S Nakao, T Sonoda, K Tsugawa, J Choi, T Kato, Vacuum, Vol. 84, 2010, pp. 642-647.

62. "酸素プラズマ処理によるシリコン添加DLC膜の低摩擦化"

    崔埈豪, 角田篤史, 熊谷知久, 加藤孝久, 川口雅弘, トライボロジスト, Vol. 54, No.11, 2009, pp. 53-61. 

61. "Evaluation of Elastic Properties of DLC Coating on SKD61 Steel by Optical Indentation Microscopy"

    M Ikeyama, J Choi, T Miyajima, Surface and Coatings Technology, Vol. 203, 2009, pp. 2571-2574. 

60. "Development of empirical bond-order-type interatomic potential for amorphous carbon structures"

    T Kumagai, S Hara, J Choi, S Izumi, T Kato, Journal of Applied Physics, Vol. 105, 2009, pp. 064310-1-064310-10.

59. "Improvement of corrosion protection property of Mg-alloy by DLC and Si–DLC coatings with PBII technique and multi-target DC–RF magnetron sputtering"

    M Ikeyama, N Setsuo, S Tsutomu, J Choi, Nuclear Instruments & Methods in Physics Research B, Vol. 269, 2009, pp. 1675-1679. 

58. "臨界せん断応力によるDLC膜の密着強度の評価"

    崔埈豪, 石井啓資, 熊谷知久, 加藤孝久, 疋田康弘, トライボロジスト, Vol. 54, No. 2, 2009, pp. 138-144. 

57. "Effect of Substrate Bias Voltages on Hardness of BCN Films Prepared by RF Magnetron Sputtering"

    S Nakao, J Choi, T Kato, Transaction of the Materials Research Society of Japan, Vol. 33, 2008, pp. 1047-1051. 

56. "Effect of Heat Treatment Temperature on PFPE Molecules Bonded on DLC Surface"

    M Kawaguchi, S Aoki, A Mitsuo, J Choi, T Kato, Tribology Online, Vol. 3, No. 5, 2008, pp.259-263. 

55. "Thermal Stability of SiBCN Films"

    N Hayashi, J Choi, T Kumagai, T Kato, M Kawaguchi, S Nakao, M Ikeyama, Tribology Online, Vol. 3, No. 5, 2008, pp.254-258. 

54. "Estimation of DLC Wear Process by Micro Laser Raman Spectroscopy"

    M Kawaguchi, S Aoki, A Mitsuo, K Morikawa, S Uchida, J Choi, T Kato, Tribology Online, Vol. 3, No. 2, 2008, pp.110-115. 

53. "Microstructure of Diamond-Like Carbon Films Prepared Using Acetylene and Toluene by Bipolar-Type Plasma Based Ion Implantation "

    S Nakao, J Choi, T Kato, Physica Status Solidi c, Vol. 5, No. 4, 2008, pp. 973-976. 

52. "Effect of Oxygen Plasma Treatment on the Tribological Properties of Si-DLC Coatings"

    J Choi, S Nakao, M Ikeyama, T Kato, Physica Status Solidi c, Vol. 5, No. 4, 2008, pp. 956-959. 

51. "Effect of Deposition Pressure on the Properties of DLC Coatings Deposited by Bipolar-Type PBII&D"

    J Choi, S Nakao, M Ikeyama, T Kato, Surface and Interface Analysis, Vol. 40, 2008, pp. 806-809. 

50. "Micro-scratch test of DLC films on Si substrates prepared by bipolar-type plasma based ion implantation"

    S Nakao, J Kim, J Choi, S Miyagawa, Y Miyagawa, M Ikeyama, Surface and Coatings Technology, Vol. 201, 2007, pp. 8334-8338. 

49. "Influences of C7H8, Ar and H2 Additions on the Formation of BCN:O,H Films Using Trimethylborate and N2 Gases by Bipolar-Type Plasma Based Ion Implantation"

    S Nakao, J Kim, J Choi, M Ikeyama, Transaction of the Materials Research Society of Japan, Vol. 32, 2007, pp. 875-878. 

48. "The Effect of Substrate Bias Mode (DC, uni-and bipolar pulse) on the Micro-structure and Mechanical Properties of BCN Films Prepared by RF Sputtering"

    J Kim, S Nakao, J Choi, M Ikeyama, S Miyake, Transaction of the Materials Research Society of Japan, Vol. 32, 2007, pp. 869-873. 

47. "Adhesion Strength and Optical Transparency of DLC Coatings on Polycarbonate"

    J Choi, S Nakao, M Ikeyama, J Kim, T Kato, Transaction of the Materials Research Society of Japan, Vol. 32, 2007, pp. 883-886. 

46. "Vacuum Vapor Deposition of PFPE Molecules on CHxNy and CHxFy Amorphous Carbon Surfaces"

    M Kawaguchi, J Choi, T Kato, Microsystem Technologies, Vol. 13, 2007, pp. 1341-1437.

45. "Corrosion Protection of DLC Coatings on Magnesium Alloy"

    J Choi, S Nakao, M Ikeyama, J Kim, T Kato, Diamond and Related Materials, Vol. 16, 2007, pp. 1361-1364.

44. "Friction Properties of Protective DLC Films on Magnesium Alloy in Aqueous NaCl Solution"

    J Choi, J Kim, S Nakao, M Ikeyama, T Kato, Nuclear Instruments & Methods in Physics Research B, Vol. 257, 2007, pp. 718-721.

43. "Deposition of Si-DLC Film and Its Microstructural, Tribological and Corrosion Properties"

    J Choi, M Kawaguchi, T Kato, M Ikeyama, Microsystem Technologies, Vol. 13, 2007, pp. 1353-1358.

42. "The Effect of Si Incorporation on Thermal and Tribological Properties of DLC Films Deposited by PBII&D with Bipolar Pulses"

    J Choi, S Nakao, S Miyagawa, M Ikeyama, Y Miyagawa, Surface and Coatings Technology, Vol. 201, 2007, pp. 8357-8361. 

41. "DLC Coatings on Inner Walls of PET Bottles by a Simplified PBII Technique"

    M Ikeyama, S Miyagawa, S Nakao, J Choi, T Miyajima, Instruments & Methods in Physics Research B, Vol. 257, 2007, pp. 741-745.

40. "BCN膜の微細構造への大気中熱処理の影響"

    金鍾得, 中尾節男, 崔埈豪, 三宅正二郎, 表面技術, Vol. 57, No. 10, 2006, pp. 722-726. 

39. "Raman spectra of DLC films prepared by bipolar-type plasma based ion implantation"

    S Nakao, J Kim, J Choi, S Miyagawa, Y Miyagawa, M Ikeyama, Transaction of the Materials Research Society of Japan, Vol. 31, No. 3, 2006, pp. 685-688. 

38. "Deposition of B-C-N films by sputtering and their mechanical properties"

    J Kim, S Nakao, J Choi, M Ikeyama, S Miyake, Transaction of the Materials Research Society of Japan, Vol. 31, No. 3, 2006, pp. 693-696. 

37. "正・負高電圧パルス型プラズマ利用イオン注入法で作製したSi含有DLC膜(II)-正パルス波高値と耐熱性, 摩擦摩耗特性"

    M Ikeyama, J Choi, S Nakao, S Miyagawa, 粉体および粉末冶金, Vol. 53, 2006, pp. 641-646.

36. "正・負高電圧パルス型プラズマ利用イオン注入法で作製したSi含有DLC膜(I)-Si含有量と耐熱性および摩擦摩耗特性"

    M Ikeyama, J Choi, S Nakao, S Miyagawa, 粉体および粉末冶金, Vol. 53, 2006, pp. 635-640.

35. "Effects of positively and negatively pulsed voltages on the microstructure of DLC films prepared by bipolar-type plasma based ion implantation"

    S Nakao, J Choi, J Kim, S Miyagawa, Y Miyagawa, M Ikeyama, Diamond and Related Materials, Vol. 15, 2006, pp. 884 -887. 

34. "Vapor deposition of perfluoropolyether lubricant on fluorinated diamondlike carbon surface"

    M Kawaguchi, J Choi, T Kato, Journal of Applied Physics, Vol. 99, 2006, pp. 08N108-1-08N108-3. 

33. "Electrically Conductive Diamond-Like Carbon Coatings Prepared by Plasma-Based Ion Implantation with Bipolar Pulses" 

    S Miyagawa, S Nakao, J Choi, M Ikeyama and Y Miyagawa, New Diamond and Frontier Carbon Technology, Vol. 16, No. 1, 2006, pp. 33-38.

32. "Analysis of plasma and neutral gas flow inside of a PET bottle under PIII condition by particle-in-cell/Monte Carlo simulation" 

    Y Miyagawa, M Tanaka, M Ikeyama, S Nakao, J Choi, and S Miyagawa, Nuclear Instruments & Methods in Physics Research B, Vol. 242, No. 1-2, 2006, pp. 341-345.

31. "Effects of target bias voltage on the electrical conductivity of DLC films deposited by PBII/D with a bipolar pulse" 

    S Miyagawa, S Nakao, J Choi, M Ikeyama and Y Miyagawa, Nuclear Instruments & Methods in Physics Research B, Vol. 242, No. 1-2, 2006, pp. 346-348.

30. "Deposition of PFPE lubricant films on Si-incorporated carbon surfaces"

    J Choi, M Kawaguchi, T Kato, M Ikeyama, Journal of Applied Physics, Vol. 99, 2006, pp. 08N109-1-08N109-3.

29. "Effect of Positive Pulses on the Microstructure and Mechanical Properties of Diamond-Like Carbon Films Deposited by PBII"

    J Choi, S Miyagawa, S Nakao, M Ikeyama, Y Miyagawa, Nuclear Instruments & Methods in Physics Research B, Vol. 242, 2006, pp. 357-359. 

28. "Thermal stability and tribological properties of Si-incorporated DLC films"

    J Choi, S Miyagawa, S Nakao, M Ikeyama, J Kim, Y Miyagawa, Transaction of the Materials Research Society of Japan, Vol. 31, No. 3, 2006, pp. 689-692. 

27. "Deposition of ultrathin organic films on various carbon surfaces using vacuum vapor deposition"

    J Choi, T Kato, S Nakao, M Ikeyama, M Kawaguchi, Surface and Interface Analysis, Vol. 38, 2006, pp. 887-890. 

26. "Thermal stability of diamond-like carbon films deposited by plasma based ion implantation technique with bipolar pulses"

    J Choi, S Nakao, S Miyagawa, M Ikeyama, Y Miyagawa, Diamond and Related Materials, Vol. 15, 2006, pp. 948 -951. 

25. "Visible and UV Raman Spectra of Diamond-Like Carbon Films Prepared by a PBII System" 

    S Nakao, J Choi, S Miyagawa, M Ikeyama and Y Miyagawa, Transaction of the Materials Research Society of Japan, Vol. 30, No. 3, 2005, pp. 785-788. 

24. "Self-Assembled Monolayers as Lubricants for Magnetic Disk Drives" 

    J Choi, T Kato, IEEE Transactions on Magnetics, Vol. 41, No. 2, 2005, pp. 599-563. 

23. "Microstructure and Mechanical Properties of Si-DLC Films Deposited by PBII with Bipolar Pulses"

    J Choi, S Miyagawa, S Nakao, M Ikeyama, Y Miyagawa, Transaction of the Materials Research Society of Japan, Vol. 30, No. 3, 2005, pp. 781-784. 

22. "Vapor Deposition of Strongly Bonded Hydrocarbon Films on Diamond-Like Carbon Surfaces"

    J Choi, T Kato, M Ikeyama, Journal of Applied Physics, Vol. 97, No. 10, 2005, pp. 307-309. 

21. "Friction and Durability Characteristics of Ultrathin Perfluoropolyether Lubricant Film Composed of Bonded and Mobile Molecular Layers on Diamond-Like Carbon Surface" 

    T Kato, M Kawaguchi, MS Mayeed, J Choi, Wear, Vol. 257, 2004, pp. 909-915. 

20. "Frictional Properties of Bilayered Mixed Lubricant Films on Amorphous Carbon Surface: Effect of Alkyl Chain Length and SAM/PFPE Portion" 

    J Choi, H Morishita, T Kato, Applied Surface Science, Vol. 228, No. 1-4, 2004, pp. 191-200. 

19. "Spreading of Perfluoropolyethers on FDTS-coated Amorphous Carbon Surfaces" 

    J Choi, M Kawaguchi, T Kato, IEEE Transactions on Magnetics, Vol. 40, No. 4, 2004, pp. 3189-3191. 

18. "Topological and Tribo-chemical Studies of Contact Sliding on Ultra-thin Perfluoropolyether Film" 

    SK Sinha, J Choi, T Kato, IEEE Transactions on Magnetics, Vol. 39, No. 2, 2003, pp. 875-880.

17. "Friction of PFPE Lubricant Film with Bonded and Mobile Layers" 

    M Kawaguchi, J Choi, K Tanaka, T Kato, Journal of Japanese Society of Tribologists, Vol. 48, No. 3, 2003, pp. 237-244.

16. "Monte Carlo Simulation of PFPE Molecular Conformation in the Ultrathin Liquid Films" 

    T Kato, MS Mayeed, M Kawaguchi, J Choi, Journal of Japanese Society of Tribologists, Vol. 48, No. 8, 2003, pp. 679-686. 

15. "A Study of Friction Properties of ZDOL on Magnetic Disk Surface" 

    M Kawaguchi, J Choi, T Kato, K Tanaka, IEEE Transactions on Magnetics, Vol. 39, No. 5, 2003, pp. 2483-2485. 

14. "Measurement on the Shear Properties of Liquid Nanomeniscus Bridge" 

    J Choi, T Kato, Tribology International, Vol. 36, No. 4-6, 2003, pp. 475-481. 

13. "Self-Assembled Monolayer on Diamond-Like Carbon Surface: Formation and Friction Measurements"

    J Choi, T Ishida, T Kato, S Fujisawa, Tribology International, Vol.36, No. 4-6, 2003, pp. 285-290. 

12. "Self-Assembled Monolayers on ta-C Surfaces: Effect of sp3/sp2 Ratio on Adsorption Rate and Friction"

    J Choi, T Kato, Journal of Applied Physics, Vol. 93, No. 10, 2003, pp.8722-8724.

11. "Possibility of Organic Monolayer Films as Lubricants for Disk Drives: Comparative Study of PFPE and Organosilane" 

    J Choi, M Kawaguchi, T Kato, ASME Trans. Journal of Tribology, Vol. 125, No. 4, 2003, pp. 850-853.

10. "ナノスケール複合潤滑膜の開発­" 

    崔埈豪, 加藤孝久, トライボロジスト, Vol. 48, No. 7, 2003, pp. 585-591.

9. "The Surface Coverage Effect on the Frictional Properties of Patterned PFPE Nanolubricant Films in HDI" 

    J Choi, M Kawaguchi, T Kato, IEEE Transactions on Magnetics, Vol. 39, No. 5, 2003, pp. 2492-2494. 

8. "Development of the Mixed Nanolubricant System by FDTS Islands and PFPE Mobile Phase" 

    J Choi, T Kato, IEEE Transactions on Magnetics, Vol. 39, No. 5, 2003, pp. 2444-2446. 

7. "Nanorheological Properties of the PFPE Nanomeniscus Bridge in the Separation Range of 10-1000 nm " 

    J Choi, T Kato, Langmuir, Vol. 19, No. 19, 2003, pp. 7933-7940. 

6. "Nanoscale Lubricant with Strongly Bonded Phase and Mobile Phase" 

    J Choi, M Kawaguchi, T Kato, Tribology Letters, Vol. 15, No. 4, 2003, pp. 353-358. 

5. "液体超薄膜の動的特性－ナノメニスカス架橋の影響" 

    崔埈豪, 加藤孝久, トライボロジスト, Vol. 48, No. 10, 2003, pp. 855-865. 

4. "Self-Assembled Monolayers Formation on the Magnetic Hard Disk Surface and Friction Measurements"

    J Choi, M Kawaguchi, T Kato, Journal of Applied Physics, Vol. 91, No. 10, 2002, pp. 7574-7576.

3. "Static and Dynamic Behavior of Liquid Nano-meniscus Bridge"

    J Choi, T Kato, STLE Tribology Transactions, Vol. 44, No. 1, 2001, pp. 19-26. 

2. "Wear of the Alumina Short Fiber Reinforced Tin-Bronze Matrix Composites at the Room Temperature and an Elevated Temperature" 

    J Choi, MY Huh, Journal of KSTLE, Vol. 11, No. 4, 1995, pp. 45-52. 

1. "Wear Properties of the Alumina Short Fiber Reinforced Tin-Bronze Matrix Composites Manufactured by Hot Pressing" 

    J Choi, MY Huh, The Korean Society for Technology of Plasticity, Vol. 4, 1995, pp. 398-409.