Publications
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 Nano 18, 29036 (2024); [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 Nano 17, 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 Nano 17, 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 Nano 16, 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. Ding and H. S. Shin, "Epitaxial Single-Crystal Hexagonal Boron Nitride Multilayers on Ni (111)", Nature 606, 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. C 125, 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 Materials 8, 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. C 125, 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", Carbon 140, 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", Carbon 138, 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", Carbon 67, 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. B 86, 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. B 84, 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 Nano 5, 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 Nano 4, 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”, Ultramicroscopy 108, 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. C 111, 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. USA 104, 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. A 24, 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. B 109, 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]
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 Nano 17, 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 Nano 17, 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 Nano 16, 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. Ding and H. S. Shin, "Epitaxial Single-Crystal Hexagonal Boron Nitride Multilayers on Ni (111)", Nature 606, 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. C 125, 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 Materials 8, 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. C 125, 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", Carbon 140, 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", Carbon 138, 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", Carbon 67, 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. B 86, 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. B 84, 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 Nano 5, 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 Nano 4, 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”, Ultramicroscopy 108, 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. C 111, 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. USA 104, 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. A 24, 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. B 109, 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]