87. S. I. Yoon, H. Park, Y. Lee, C. Guo, Y. J. Kim, J. S. Lee, S. Son, M. Choe, D. Han, K. Kwon, J. Lee, K. Y. Ma, A. Ghassami, S. W. Moon, S.-Y. Park, B. K. Kang, Y.-J. Kim, S. Koo, A. Genco, J. Shim, A. Tartakovskii, Y. Duan, F. Ding, S. Ahn, S. Ryu, J.-Y. Kim, W. S. Yang, M. Chhowalla, Y. S. Park, S. K. Min, Z. Lee, H. S. Shin, "Pressure Enabled Organic Reactions via Confinement between Layers of 2D Materials",Sci. Adv.10, eadp9804 (2024); [Link] [PDF] 86. S. Kim+, H. Kim+, C. Lee, I. Park, Y. Kim, D. Moon, J. H. Shim*, S. Ryu,* S. S. Park,* "Au25 Cluster-Based Atomically Precise Coordination Frameworks and Emission Engineering through Lattice Symmetry",ACS Nano18, 29036 (2024) (+equal authorship); [Link] [PDF] 85. H. Shim, G. Park, H. Yun, S. Ryu, Y.-Y. Noh, C.-J. Kim, "Single-Shot Multispectral Encoding: Advancing Optical Lithography for Encryption and Spectroscopy",Nano. Lett.24, 11411 (2024); [Link] [PDF] 84. S. W. Han, W. S. Yun, S. Seong, Z. Tahir, Y. S. Kim, M. Ko, S. Ryu, J.-S. Bae, C. W. Ahn, and J. Kang, "Hidden Direct Bandgap of Bi2O2Se by Se Vacancy and Enhanced Direct Bandgap of Bismuth Oxide Overlayer",J. Phys. Chem. Lett.15, 1590 (2024); [Link] [PDF] 83. W. Kim,+ G. Jeong,+ J. Oh, J. Kim, K. Watanabe, T. Taniguchi and S. Ryu,* "Exciton-Sensitized Second-Harmonic Generation in 2D Heterostructures",ACS Nano17, 20580(2023) (+equal authorship); [Link] [PDF] 82. B. S. Gu, S. Dutta, Y.-R. Hong, O. F. N. Okello, H. Im, S. Ahn, S.-Y. Choi, J. W. Han, S. Ryu and I. S. Lee, "Harmonious Heterointerfaces Formed on 2D-Pt Nanodendrites by Facet-Respective Stepwise Metal Deposition for Enhanced Hydrogen Evolution Reaction",Angew. Chem.-Int. Edit.62, e202307816 (2023); [Link] [PDF] 81. H. Kim, J. H. Kim, J. Kim, J. Park, K. Park, J.-H. Baek, J.-C. Shin, H. Lee, J. Son, S. Ryu, Y.-W. Son, H. Cheong and G.-H. Lee, "In-Plane Anisotropy of Graphene by Strong Interlayer Interactions with van der Waals Epitaxially Grown MoO3",Sci.Adv.9, eadg6696 (2023); [Link] [PDF] 80. D. Kim, S. Lee, J. Park, J. Lee, H. C. Choi, K. Kim and S. Ryu,* "In-Plane and Out-of-Plane Excitonic Coupling in 2D Molecular Crystals",Nature Commun.14, 2736 (2023);[Link] [PDF] 79. Y. Kim,+ H. Kang,+ M. Song, H. Kwon and S. Ryu,* "Interfacial-Water-Modulated Photoluminescence of Single-Layer WS2 on Mica",Int. J. Mol. Sci.24, 3492(2023) (+equal authorship); [Link] [PDF] 78. Y. Park, C. Ahn, J.-G. Ahn, J. H. Kim, J. Jung, J. Oh, S. Ryu, S. Kim, S. C. Kim, T. Kim and H. Lim, "Critical Role of Surface Termination of Sapphire Substrates in Crystallographic Epitaxial Growth of MoS2 Using Inorganic Molecular Precursors",ACS Nano17, 1196(2023); [Link] [PDF] 77. S. Kim,+ S. Yoon,+ H. Ahn, G. Jin, H. Kim, M.-H. Jo, C. Lee, J. Kim* and S. Ryu,* "Photoluminescence Path Bifurcations by Spin Flip in Two-Dimensional CrPS4",ACS Nano16, 16385(2022) (+equal authorship); [Link] [PDF] 76. H. Zhao* and S. Ryu,* "Insights into 2D Materials",Phys. Chem. Chem. Phys.24, 16940 (2022); [Link] [PDF] 75. K. Y. Ma, L. Zhang, S. Jin, Y. Wang, S. I. Yoon, H. Hwang, J. Oh, D. S. Jeong, M. Wang, S. Chatterjee, G. Kim, A-R. Jang, J. Yang, S. Ryu, H. Y. Jeong, R. S. Ruoff, M. Chhowalla, F. Dingand H. S. Shin, "Epitaxial Single-Crystal Hexagonal Boron Nitride Multilayers on Ni (111)",Nature606, 88 (2022); [Link] [PDF] 74. H. Kang,+ K. Park+ and S. Ryu,* "Optical Imaging of Redox and Molecular Diffusion in 2D van der Waals Space",Acc. Chem. Res.55, 44 (2022) (+equal authorship); [Link] [PDF] 73. K. Park and S. Ryu,* "Dual-Channel Charge Transfer Doping of Graphene by Sulfuric Acid", Bull. Korean Chem. Soc. 43, 40 (2022); [Link][PDF] 72. S. W. Han, W. S. Yun, H. Kim, Y. Kim, D.-H. Kim, C. W. Ahn and S. Ryu "Hole Doping Effect of MoS2 via Electron Capture of He+Ion Irradiation",Sci. Rep. 11, 23590 (2021); [Link] [PDF] 71. S. J. Yang, D. Kim, J. Choi, S. H. Kim, K. Park, S. Ryu and K. Cho, "Enhancing Thermoelectric Power Factor of 2D Organometal Halide Perovskites by Suppressing 2D/3D Phase Separation",Adv. Mater.33, 2102797 (2021); [Link] [PDF] 70. S. Song, S. J. Yang, J. Choi, S. G. Han, K. Park, H. Lee, J. Min, S. Ryu and K. Cho, "Surface Stabilization of a Formamidinium Perovskite Solar Cell Using Quaternary Ammonium Salt",ACS Appl. Mater. & Interfaces 13, 37052(2021); [Link] [PDF] 69. H. Kang and S. Ryu,* "Optical Imaging of Chemically and Geometrically Controlled Molecular Diffusion and Redox in 2D van der Waals Space",J. Phys. Chem. C125, 16819 (2021); [Link][PDF] 68. S. Koo, I. Park, K. Watanabe, T. Taniguchi, J. Shim and S. Ryu,* "Extraordinary Photostability and Davydov Splitting in BN-Sandwiched Single-Layer Tetracene Molecular Crystals",Nano Lett.21, 6600 (2021); [Link][PDF] 67. S. Lee, S. Kim, C. Park, W. Kim, S. Ryu and W. Choi, "Solar Denitrification Coupled with in situ Water Splitting",Energy Environ. Sci.14, 4437 (2021); [Link][PDF] 66. N. Kim, S. Choi, S.-J. Yang, J. Park, J.-H. Park, N. N. Nguyen, K. Park, S. Ryu, K. Cho and C.-J. Kim, "Graphene Nanoribbon Grids of Sub-10 nm Widths with High Electrical Connectivity",ACS Appl. Mater. & Interfaces 13, 28593(2021); [Link][PDF] 65. M. Song, H. Kang, D. Rhodes, B. Kim, J. Hone and S. Ryu,* "Optically Facet-Resolved Reaction Anisotropy in Two-Dimensional Transition Metal Dichalcogenides",2D Materials8, 035045 (2021); [Link] [PDF] 64. J.-I. Lee, S. Cho, T. T. Vu, S. Kim, S. Ryu, J. Moon and S. Park "Hybrid Polyion Complex Micelles Enabling High-Performance Lithium-Metal Batteries with Universal Carbonates",Energy Storage Mater.38, 509 (2021); [Link] [PDF] 63. S. Kim, J. Lee, C. Lee and S. Ryu,* "Polarized Raman Spectra and Complex Raman Tensors of Antiferromagnetic Semiconductor CrPS4",J. Phys. Chem. C125, 2691 (2021); [Link] [PDF] 62. W. Kim, J. Y. Ahn, J. Oh, J. H. Shim and S. Ryu,* "Second-Harmonic Young's Interference in Atom-Thin Heterocrystals",Nano Lett.20, 8825 (2020); [Link] [PDF] 61. S. W. Jang, S. Dutta, A. Kumar, Y.-R. Hong, H. Kang, S. Lee, S. Ryu, W. Choi, and I. S. Lee, "Holey Pt Nanosheets on NiFe-Hydroxide Laminates: Synergistically Enhanced Electrocatalytic 2D Interface toward Hydrogen Evolution Reaction",ACS Nano 14, 10578 (2020); [Link][PDF] 60. J. Choi, S. Koo, M. Song, D. Jung, S. Choi and S. Ryu,* "Varying Electronic Coupling at Graphene-Copper Interfaces Probed with Raman Spectroscopy",2D Materials 7, 025006 (2020); [Link] [PDF] 59. K. Park,+ H. Kang,+ S. Koo, D. Lee and S. Ryu,* "Redox-Governed Charge Doping Dictated by Interfacial Diffusion in Two-Dimensional Materials",Nature Commun.10, 4931 (2019) (+equal authorship); [Link] [PDF] 58. S. Kim, J. Lee, G. Jin, M.-H. Jo, C. Lee and S. Ryu,* "Crossover between Photochemical and Photothermal Oxidations of Atomically Thin Magnetic Semiconductor CrPS4",Nano Lett.19, 4043 (2019); [Link] [PDF]57. H. Jeon, T. Teraji, K. Watanabe, T. Taniguchi and S. Ryu,* "Lattice Vibrations of Single and Multi-Layer Isotopologic Graphene",Carbon140, 449 (2018); [Link][PDF] 56. Y. Kwon, K. Kim, W. Kim, S. Ryu and H. Cheong, "Variation of Photoluminescence Spectral Line Shape of Monolayer WS2",Curr. Appl. Phys.18, 941 (2018); [Link][PDF] 55. G. Ahn and S. Ryu,* "Reversible Sulfuric Acid Doping of Graphene Probed by in-situ Multi-Wavelength Raman Spectroscopy",Carbon138, 257 (2018); [Link][PDF]54. S.-J. Kwon, T.-H. Han, T. Y. Ko, N. Li, S.-H. Bae, K. S. Kim, S. Ryu and T.-W. Lee, "Extremely Stable Graphene Electrodes Doped with Macromolecular Acid",Nature Commun.9, 2037 (2018); [Link][PDF] 53. Y. Jang, S.-J. Kwon, J. Shin, H. Jeong, W.-T. Hwang, J.-W. Kim, J. Koo, T. Y. Ko, S. Ryu, G. Wang, T.-W. Lee, and T. Lee, "Interface-Engineered Charge Transport Properties in Benzenedithol Molecular Electronic Junctions via Chemically p-doped Graphene Electrodes",ACS Appl. Mater. & Interfaces 9, 42043(2017); [Link] [PDF] 52. Y. Ryu, W. Kim, S. Koo, H. Kang, K. Watanabe, T. Taniguchi, and S. Ryu,* "Interface-Confined Doubly Anisotropic Oxidation of Two-Dimensional MoS2",Nano Lett. 17, 7267(2017); [Link] [PDF] 51. J. Lee, T. Y. Ko, J. H. Kim, H. Bark, B. Kang, S.-G. Jung, T. Park, Z. Lee, S. Ryu,* and C. Lee,* "Structural and Optical Properties of Single- and Few-Layer Magnetic Semiconductor CrPS4",ACS Nano 11, 10935 (2017); [Link] [PDF] 50. D.-G. Lee, H. Jeong, K.-W. Jeon, L. Zhang, K. Park, S. Ryu, J. Kim, and I. S. Lee, "Carbon thin-layer-coated manganese oxide nanocrystals as an effective support for high-performance Pt electrocatalysts stabilized at a metal–metal oxide–carbon triple junction",J. Mater. Chem. A 5, 22341 (2017); [Link][PDF] 49. D. Luo, X. You, B.-W. Li, X. Chen, H. J. Park, M. Jang, T. Y. Ko, K. Wong, M. Yousaf, X. Chen, M. Huang, S. H. Lee, Z. Lee, H.-J. Shin, S. Ryu, S. K. Kwak, N. Park, R. R. Bacsa, W. Bacsa, R. S. Ruoff, "Role of Graphene in Water-Assisted Oxidation of Copper in Relation to Dry Transfer of Graphene",Chem. Mater. 29, 4546 (2017); [Link] [PDF] 48. P. K. Nayak, Y. Horbatenko, S. Ahn, G. Kim, J.-U. Lee, K. Y. Ma, A-R. Jang, H. Lim, D. Kim, S. Ryu, H. Cheong, N. Park, and H. S. Shin, "Probing Evolution of Twist-Angle-Dependent Interlayer Excitons in MoSe2/WSe2 van der Waals Heterostructures",ACS Nano 11, 4041 (2017); [Link][PDF] 47. J. E. Lee, J. Jung, T. Y. Ko, S. Kim, S.-I. Kim, J. Nah, S. Ryu, K. T. Nam and M. H. Lee, "Catalytic synergy effect of MoS2/reduced graphene oxide hybrids for a highly efficient hydrogen evolution reaction",RSC Adv. 7, 5480 (2017); [Link] [PDF] 46. T. Y. Ko, A. Jeong, W. Kim, J. Lee, Y. Kim, J. E. Lee, G. H. Ryu, K. Park, D. Kim, Z. Lee, M. H. Lee, C. Lee and S. Ryu,* "On-Stack Two-Dimensional Conversion of MoS2 into MoO3",2D Materials 4, 014003 (2017); [Link] [PDF] 45. X. Zhang, Y. Huang, S. Chen, N. Y. Kim, W. Kim, D. Schilter, M. Biswal, B. Li, Z. Lee, S. Ryu, C. W. Bielawski, W. S. Bacsa, and R. S. Ruoff, "Birch-Type Hydrogenation of Few-Layer Graphenes: Products and Mechanistic Implications",J. Am. Chem. Soc. 138, 14980 (2016); [Link] [PDF] 44. H. Kwon, S. W. Seo, T. G. Kim, E. S. Lee, P. T. Lanh, S. Yang, S. Ryu,* J. W. Kim,* "Ultrathin and Flat Layer Black Phosphorus Fabricated by Reactive Oxygen and Water Rinse",ACS Nano 10, 8723 (2016); [Link] [PDF] 43. S. Kim and S. Ryu,* "Thickness-Dependent Native Strain in Graphene Membranes Visualized by Raman Spectroscopy ",Carbon 100, 283 (2016); [Link] [PDF] 42. S.-S. Kim, M. J. Park, J.-H. Kim, G. Ahn, S. Ryu, B. H. Hong, and B.-H. Sohn, "Strain-Assisted Wafer-Scale Nanoperforation of Single-Layer Graphene by Arrayed Pt Nanoparticles",Chem. Mater.27, 7003 (2015); [Link] [PDF] 41. D.-S. Kim, H. Kwon, A. Y. Nikitin, S. Ahn, L. Martín-Moreno, F. J. García-Vidal, S. Ryu, H. Min, and Z. H. Kim, "Stacking Structures of Few-Layer Graphene Revealed by Phase-Sensitive Infrared Nanoscopy",ACS Nano 9, 6765 (2015); [Link] [PDF] 40. K. Park and S. Ryu,* "Direction-Controlled Chemical Doping for Reversible G-Phonon Mixing in ABC Trilayer",Sci. Rep. 5, 8707 (2015); [Link] [PDF] 39. Y.-J. Yu, K. S. Kim, J. Nam, S. R. Kwon, H. Byun, K. Lee, J.-H. Ryou, R. D. Dupuis, J. Kim, G. Ahn, S. Ryu, M.-Y. Ryu and J. S. Kim, "Temperature-Dependent Resonance Energy Transfer from Semiconductor Quantum Wells to Graphene",Nano Lett. 15, 896(2015); [Link] [PDF] 38. P. Joo, K. Jo, G. Ahn, D. Voiry, H. Y. Jeong, S. Ryu, M. Chhowalla, and B.-S. Kim,* "Functional Polyelectrolyte Nanospaced MoS2 Multilayers for Enhanced Photoluminescence",Nano Lett. 14, 6456(2014); [Link] [PDF] 37. Y. Ryu, M. K. Park, and S. Ryu,* "Thermal Modulation of Photoluminescence from Single-Layer MoS2",Bull. Korean Chem. Soc. 35, 3077(2014); [Link] [PDF] 36. G. Park, S. K. Park, J. Han, T. Y. Ko, S. Lee, J. Oh, S. Ryu, H. S. Park and S. Park, "Finely Tuning Oxygen Functional Groups of Graphene Materials and Optimizing Oxygen Levels for Capacitors ",RSC Adv. 4, 36377 (2014); [Link] [PDF] 35. D. Lee, G. Ahn and S. Ryu,* "Two-Dimensional Water Diffusion at a Graphene-Silica Interface",J. Am. Chem. Soc. 136, 6634(2014); [Link] [PDF] 34. Y. Kim, D. Cho, S. Ryu and C. Lee, "Tuning Doping and Strain in Graphene by Microwave-Induced Annealing",Carbon67, 673 (2014); [Link] [PDF] 33. J. Hong, M. K. Park, E. J. Lee, D. Lee, D. S. Hwang and S. Ryu,* "Origin of New Broad Raman D and G Peaks in Annealed Graphene",Sci. Rep. 3, 2700 (2013); [Link] [PDF] 32. S. W. Han, Y. H. Hwang, S.-H. Kim, W. S. Yun, J. D. Lee, M. G. Park, S. Ryu, J. S. Park, D.-H. Yoo, S.-P. Yoon, S. C. Hong, K. S. Kim, and Y. S. Park, "Controlling Ferromagnetic Easy Axis in a Layered MoS2 Single Crystal",Phys. Rev. Lett. 110, 247201 (2013); [Link] [PDF] 31. G. Ahn , H. R. Kim , T. Y. Ko , K. Choi , K. Watanabe , T. Taniguchi , B. H. Hong , and S. Ryu,* "Optical Probing of the Electronic Interaction between Graphene and Hexagonal Boron Nitride",ACS Nano 7, 1533 (2013); [Link] [PDF] 30. S.-W. Min, H. S. Lee, H. J. Choi, M. K. Park, T. Nam, H. Kim, S. Ryu and S. Im, "Nanosheet Thickness-Modulated MoS2 Dielectric Property Evidenced by Field-Effect Transistor Performance",Nanoscale 5, 548 (2013); [Link] [PDF] 29. M. J. Lee, J. S. Choi, J.-S. Kim, I.-S. Byun, D. H. Lee, S. Ryu, C. Lee, and B. H. Park, "Characteristics and Effects of Diffused Water Between Graphene and a SiO2 Substrate",Nano Res. 5, 710 (2012); [Link] [PDF] 28. H. S. Lee, S.-W. Min, M. K. Park, Y. T. Lee, P. J. Jeon, J. H. Kim, S. Ryu and S. Im, " MoS2 Nanosheets for Top-Gate Nonvolatile Memory Transistor Channel",Small 8, 3111 (2012); [Link] [PDF] 27. S. W. Han, G.-B. Cha, E. Frantzeskakis, I. Razado-Colambo, J. Avila, Y. S. Park, D. Kim, J. Hwang, J. S. Kang, S. Ryu, W. S. Yun, S. C. Hong, and M. C. Asensio, "Band-Gap Expansion in the Surface-Localized Electronic Structure of MoS2(0002)",Phys. Rev. B86, 115105 (2012); [Link] [PDF] 26. J. E. Lee, G. Ahn, J. Shim, Y. S. Lee, and S. Ryu,* "Optical Separation of Mechanical Strain from Charge Doping in Graphene",Nature Commun.3, 1024 (2012); [Link] [PDF] 25. H. S. Lee, S. Min, Y. Chang, M. K. Park, T. Nam, H. Kim, J. H. Kim, S. Ryu, and S. Im, “MoS2 Nanosheet Phototransistors with Thickness-Modulated Optical Energy Gap”, Nano Lett.12, 3695 (2012); [Link] [PDF] 24. G. Ahn, H. R. Kim, B. H. Hong, and S. Ryu,* “Raman Spectroscopy Study on the Reactions of UV-Generated Oxygen Atoms with Single-Layer Graphene on SiO2/Si Substrates”, Carbon Lett.13, 34 (2012); [Link] [PDF] 23. J. Shim, C. H. Lui, T. Y. Ko, Y.-J. Yu, P. Kim, T. F. Heinz, and S. Ryu,* “Water-Gated Charge Doping of Graphene Induced by Mica Substrates”, Nano Lett.12, 648 (2012); [Link][PDF] 22. H. Kwon, K. Hwang, J. Park, S. Ryu, and S. K. Kim, “Electron Solvation and Solvation-Induced Crystallization of an Ammonia Film on Ag(111) Studied by 2-Photon Photoemission”, Phys. Chem. Chem. Phys.13, 17785 (2011); [Link] [PDF] 21. S. W. Han, H. Kwon, S. K. Kim, S. Ryu, W. S. Yun, D. H. Kim, J. H. Hwang, J.-S. Kang, J. Baik, H. J. Shin, and S. C. Hong, “Band-Gap Transition Induced by Interlayer van der Waals Interaction in MoS2”, Phys. Rev. B84, 045409 (2011); [Link] [PDF] 20. S. Ryu,* J. Maultzsch, M. Y. Han, P. Kim, and L. E. Brus, “Raman Spectroscopy of Lithographically Patterned Graphene Nanoribbons”, ACS Nano5, 4123 (2011); [Link] [PDF] 19. S. Ryu, Li Liu, S. Berciaud, Y.-J. Yu, H. Liu, P. Kim, G. W. Flynn, and L. E. Brus, “Atmospheric Oxygen Binding and Hole Doping in Deformed Graphene on a SiO2 Substrate”, Nano Lett. 10, 4944 (2010); [Link] [PDF] 18. J. Song, T. Y. Ko, and S. Ryu,* “Raman Spectroscopy Study of Annealing-Induced Effects on Graphene Prepared by Micromechanical Exfoliation”, Bull. Korean Chem. Soc. 31, 2679 (2010); [Link][PDF] 17. C. Lee, H. Yan, L. E. Brus, T. F. Heinz, J. Hone, and S. Ryu,* “Anomalous Lattice Vibrations of Single- and Few-Layer MoS2”, ACS Nano4, 2695 (2010); [Link] [PDF] 16. S. Vukelic, P. Kongsuwan, S. Ryu and Y. L. Yao, "Ultrafast Laser Induced Structural Modification of Fused Silica—Part II: Spatially Resolved and Decomposed Raman Spectral Analysis",J. Manuf. Sci. E.132, 061013 (2010); [Link] [PDF] 15. H. Liu, S. Ryu, Z. Chen, M. L. Steigerwald, C. Nuckolls, and L. E. Brus, “Photochemical Reactivity of Graphene”, J. Am. Chem. Soc.131, 17099 (2009); [Link] [PDF] 14. Y.-J. Yu, Y. Zhao, S. Ryu, L. E. Brus, K. S. Kim, and P. Kim, “Tuning the Graphene Work Function by Electric Field Effect”, Nano Lett.9, 3430 (2009); [Link] [PDF] 13. E. Stolyarova, D. Stolyarov, K. Bolotin, S. Ryu, L. Liu, K. T. Rim, M. Klima, M.Hybertsen, I. Pogorelsky, I. Pavlishin, K. Kusche, J. Hone, P. Kim, H. L. Stormer, V. Yakimenko, and G. Flynn, “Observation of Graphene Bubbles and Effective Mass Transport under Graphene Films”, Nano Lett.9,332 (2009); [Link] [PDF] 12. S. Berciaud, S. Ryu, L. E. Brus, and T. F. Heinz, “Probing the Intrinsic Properties of Exfoliated Graphene: Raman Spectroscopy of Free-Standing Monolayers”, Nano Lett.9,346 (2009); [Link] [PDF] 11. S. Ryu, M. Y. Han, J. Maultzsch, M. L. Steigerwald, T. F. Heinz, P. Kim, and L. E. Brus, “Reversible Basal Plane Hydrogenation of Graphene”, Nano Lett. 8,4597 (2008); [Link] [PDF] 10. L. Liu,+S. Ryu,+ M. R. Tomasik, E. Stolyarova, N. J. Jung, M. S. Hybertsen, M. L. Steigerwald, L. E. Brus, and G. W. Flynn, “Graphene Oxidation: Thickness Dependent Etching and Strong Chemical Doping”, Nano Lett.8, 1965 (2008) (+equal authorship); [Link] [PDF] 9. J. S. Lee, S. Ryu, K. Yoo, J. Kim , I. S. Choi, and W. S. Yun, “Local Inhomogeneity in Gate Hysteresis of Carbon Nanotube Field-effect Transistors Investigated by Scanning Gate Microscopy”, Ultramicroscopy108, 1045 (2008); [Link] [PDF] 8. J. S. Lee, S. Ryu, K. Yoo, I. S. Choi, W. S. Yun, and J. Kim, “Origin of Gate Hysteresis in Carbon Nanotube Field-Effect Transistors”, J. Phys. Chem. C111, 12504 (2007); [Link] [PDF] 7. E. Stolyarova, K. T. Rim, S. Ryu, J. Maultzsch, P. Kim, L. E. Brus, T. F. Heinz, M. S. Hybertsen, and G. W. Flynn, “High-resolution Scanning Tunneling Microscopy Imaging of Mesoscopic Graphene Sheets on an Insulating Surface”, Proc. Natl. Acad. Sci. USA104, 9209 (2007); [Link] [PDF] 6. S. Ryu, J. Chang, and S. K. Kim, “Hot Electrons at Metal-organic interface: Time-resolved Two Photon Photoemission Study of Phenol on Ag(111)”, J. Vac. Sci. Technol. A24, 1454 (2006); [Link] [PDF] 5. S. Ryu, J. Chang, H. Kwon, and S. K. Kim, “Dynamics of Solvated Electron Transfer in Thin Ice Film Leading to a Large Enhancement in Photodissociation of CFCl3”, J. Am. Chem. Soc.128, 3500 (2006); [Link][PDF] 4. S. Ryu, J. Chang, and S. K. Kim, “Interfacial Electron Dynamics and Hot-electron-driven Surface Photochemistry of Carbon Tetrachloride on Ag(111)”, J. Chem. Phys. 123, 114710 (2005); [Link][PDF] 3. J. Lee,+S. Ryu,+ J. Chang, S. Kim, and S. K. Kim, “Direct Observation of an Intermediate State for a Surface Photochemical Reaction Initiated by Hot Electron Transfer”, J. Phys. Chem. B109, 14481 (2005) (+equal authorship); [Link][PDF] 2. J. Lee, S. Ryu, J. S. Ku, and S. K. Kim, “Charge Transfer Photodissociation of Phenol on Ag(111)”, J. Chem. Phys. 115, 10518 (2001); [Link][PDF] 1. J. Lee, S. Ryu, and S. K. Kim, “The Adsorption and Photochemistry of Phenol on Ag(111)”, Surf. Sci.481, 163 (2001); [Link][PDF]