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https://scholar.google.com/citations?user=zvUkpkkAAAAJ&hl=ko
https://scholar.google.com/citations?user=zvUkpkkAAAAJ&hl=ko
2025
Morphological engineering of Cu2S electrodes to enhance pseudocapacitance through redox mediator integration
Morphological engineering of Cu2S electrodes to enhance pseudocapacitance through redox mediator integration
Min Kyeong Kim, Young-Woo Lee, Gyeong Hee Ryu*, John Hong*
Journal of Alloys and Compounds, 1040, 183461, 2025
Copper hydroxide nanosheets: Synthesis, structural analysis, and electrochemical performance evaluation
Copper hydroxide nanosheets: Synthesis, structural analysis, and electrochemical performance evaluation
Hye Seong Jang, Min Kyeong Kim, Dohun Lee, Youngji Kim, Yeongeun Jang, Seunghwa Lee*, John Hong*, Gyeong Hee Ryu*
Applied Surface Science Advances, 28, 100795, 2025
Optimised Synthesis of Ni-Co Hydroxide Nanosheets: Effects on Structural and Electrochemical Properties
Optimised Synthesis of Ni-Co Hydroxide Nanosheets: Effects on Structural and Electrochemical Properties
Minjeong Lee, Yeongeun Jang, Seunghwa Lee,* Gyeong Hee Ryu *
Materials Today Nano, 30, 100612, 2025
Phase transition of amorphous cobalt hydroxide to crystalline cobalt oxides by electron-beam irradiation
Phase transition of amorphous cobalt hydroxide to crystalline cobalt oxides by electron-beam irradiation
Minjeong Lee, Hye Seong Jang, Gayoung Yoon, Gyeong Hee Ryu*
Applied Microscopy, 55(1), 2025
Yeonsu Park, Suok Lee, Eunwoo Park, Yong‐Hwan Mo, Juwon Lee, Jong Bae Park, Bong Kyun Kang, Younghyun Cho, Gyeong Hee Ryu, Sang‐Beom Han*, John Hong*, Young‐Woo Lee*
Battery Energy, 2025
Enhanced Wire-Shaped Micro-Supercapacitor Treated with a Continuous Surface Atmospheric Pressure Plasma Jet Approach
Enhanced Wire-Shaped Micro-Supercapacitor Treated with a Continuous Surface Atmospheric Pressure Plasma Jet Approach
Minju Kim, Woo Jong Kim, Min Kyeong Kim, Jeongwoo Seo, Saegyoung Song,Dong Il Kim, Byeongchan Sim, Huigu Lee, Minjeong Lee, Gyeong Hee Ryu, John Hong,*and Jin Pyo Hong*
Small, 2409050, 2025
Min Kyeong Kim, Woo Jong Kim, Min Ju Kim, Chang Hoon Ahn, Jin Pyo Hong*, Gyeong Hee Ryu*, John Hong*
Journal of Alloys and Compounds, 178717, 2025
Phase Engineering of SnSeX (X = 1,2) Microstructures for High-Performance NO2 Chemiresistive Room-Temperature Sensor Systems: Toward Highly Reliable and Robust Detection Properties under Humidity and Interfering Gas Conditions
Phase Engineering of SnSeX (X = 1,2) Microstructures for High-Performance NO2 Chemiresistive Room-Temperature Sensor Systems: Toward Highly Reliable and Robust Detection Properties under Humidity and Interfering Gas Conditions
Yeongsik Hwa, Bokyeong Kim, Hwaim Park, Yeonjin Je, Myeong Doo Ryu, Jae-Won Lee, Yong-Ryun Jo, Ha-Rim An, Byoungchul Son, Bong-Yong Jeong, Jung-Shik Kong, Tae-Hoon Kim, Min Ryou, Yeong Jae Kim, Gyeong Hee Ryu, Hyunsung Jung, Joonhee Kang*, Sang-Soo Chee*
ACS Sencors, 2025
Facile synthesis and electrochemical properties of FeO/Fe(OH)3 nanosheets
Facile synthesis and electrochemical properties of FeO/Fe(OH)3 nanosheets
Gayoung Yoon‡, Yeongeun Jang‡, Hye Seong Jang, Seunghwa Lee*, Gyeong Hee Ryu*
Applied Surface Science, 682, 161621, 2025
Mechanical Properties and Microstructure of Laser Powder Bed Fusion-Processed 18Ni300 Maraging Steel According to Direct Aging Treatment Conditions
Mechanical Properties and Microstructure of Laser Powder Bed Fusion-Processed 18Ni300 Maraging Steel According to Direct Aging Treatment Conditions
Steel Research International, 96, 2400348, 2025
2024
Atomic Scale Dynamics Mechanism of Embedded MoS2 wires
Atomic Scale Dynamics Mechanism of Embedded MoS2 wires
Gyeong Hee Ryu*, Gang Seob Jung*, and Jamie H. Warner*
ACS Nano, 18(48), 33152-33158, 2024
Integrated Structural Modulation Inducing Fast Charge Transfer in Aqueous Zinc Ion Batteries
Integrated Structural Modulation Inducing Fast Charge Transfer in Aqueous Zinc Ion Batteries
Nibagani Naresh‡, Youngtae Park‡, Su Hwan Jeong, Sang Jun Lee, Dong Park Lee, So Hyun Lee, Gyeong Hee Ryu*, Young Hwa Jung*, Joo-Hyung Kim*
Small, 2406249, 2024
Potassium fluoride-induced FeOOH formation in NiFe oxalate for improved oxygen evolution performance
Potassium fluoride-induced FeOOH formation in NiFe oxalate for improved oxygen evolution performance
Seungjoon Ha, Youngji Kim, Taeyeop Kim, Seongwoo Jeong, Gyeong Hee Ryu, Seunghwa Lee*
Chemical Communications, 60, 6781-6784, 2024
Synthesis and Electrochemical Evaluation of Nickel Hydroxide Nanosheets with Phase Transition to Nickel Oxide
Synthesis and Electrochemical Evaluation of Nickel Hydroxide Nanosheets with Phase Transition to Nickel Oxide
Minjeong Lee‡, Yeongeun Jang‡, Gayoung Yoon, Seunghwa Lee*, Gyeong Hee Ryu*
RSC Advances, 14(15), 10172-10181, 2024
Synthesis of amorphous cobalt hydroxide nanosheets and electrochemical performance according to phase transition into crystalline cobalt oxides
Synthesis of amorphous cobalt hydroxide nanosheets and electrochemical performance according to phase transition into crystalline cobalt oxides
Minjeong Lee‡, Gayoung Yoon, Min Kyeong Kim, John Hong, Seunghwa Lee*, Gyeong Hee Ryu*
Journal of Alloys and Compounds, 976, 173282, 2024
Stable sodium-metal batteries with a hierarchical structured electrode toward reversible confinement of Na dendrites
Stable sodium-metal batteries with a hierarchical structured electrode toward reversible confinement of Na dendrites
Sang Jun Lee , Dongwoo Kang, Dong Yeol Hyeon, Dong Seok Kim, Suyoon Eom, Su Hwan Jeong, Dong Park Lee, Dawon Baek, Jou-Hyeon Ahn, Gyeong Hee Ryu, Kwi-Il Park, San Moon, Joo-Hyung Kim*
Energy Storage Materials, 64, 103047, 2024
2023
Hye Seong Jang, Gyu Hyeon Jeong, Hoon Ju Lee, Hyeon Suk Shin, Yeongsik Hwa, Sang-Soo Chee, Sae Yane Paek, Jong Min Kim, Byeongseo Son, Dongwoo Kang, Gyeong Hee Ryu*
Materials Today Advances, 20, 100424, 2023
Enhanced adhesion and corrosion resistance of reduced graphene oxide coated-steel with iron oxide nanoparticles
Enhanced adhesion and corrosion resistance of reduced graphene oxide coated-steel with iron oxide nanoparticles
Dongwoo Kang, Minjeong Lee, Sang Jun Lee, Joo-Hyung Kim*, Gyeong Hee Ryu*
Applied Surface Science, 624(1), 157121, 2023
Yeongwon Kwak, Ho Young Jun, Gyuri Kim, Hye-Jin Ahn, Wook Ryol Hwang, Gyeong Hee Ryu, Sang Ouk Ryu, Boris Brigljević Kim, Se Hyun, Aleksey Ni, Hankwon Lim, Chang-Ho Choi*
Industrial & Engineering Chemistry Research, 62(25), 9755-9762, 2023
Seoyeong Kim, Gyeong Hee Ryu, Geon-Hyoung An*
Applied Surface Science, 635(30), 157634, 2023
Synthesis of CoO/Co(OH)2 Nanosheets Depending on Reaction Temperatures
Synthesis of CoO/Co(OH)2 Nanosheets Depending on Reaction Temperatures
Minjeong Lee Lee, Gayoung Yoon, Gyeong Hee Ryu*
Korean Journal of Materials Research, 33(5), 222-228, 2023
PUBLICATIONS
PUBLICATIONS
1. G.H. Jeong, H.S. Jang, J.C. Yoon, Z.Lee, J. Yang, A-R. Jang*, G.H. Ryu*, “Morphologically Controlled Synthesis of Reduced-Dimensional ZnO/Zn(OH)2 Nanosheets”, ACS Omega, 7(40), 35834-35839, 2022.
2. J. Lee, F. Shen, S. Miao, G.H. Ryu, B. Im, D.G. Kim, G.-H. An*, Y. Cho*, “Enhanced Spontaneous Self-Charging through Scalable Template-Free Surface Engineering at Building Block Fiber Scale for Wearable Electronics”, Nano Energy, 104, 107891, 2022.
3. A. Yoon, G. Kim, M. Lee, Z. Lee*, G.H. Ryu*, “Thermally Driven Phase Transition of Cobalt Hydroxide Sheets via Cobalt Oxides to Cobalt Nanoparticles”, Nanoscale Horizons, 7, 1210 – 1216, 2022.
- This has been featured in 2023 Lunar New Year Collection in Nanoscale Horizons.
- This has been featured in 2023 Celebrating International Women’s Day: Women in Nanoscience.
4. M. Lee, G. Kim, G.H. Jeong, A. Yoon, Z. Lee, G.H. Ryu*, “In-situ Formation of Co Particles Encapsulated by Graphene Layers”, Applied Microscopy, 52(7), 2022.
5. G.H. Jeong, D.H. Nam, G.H. Ryu*, “Synthesis of ZnO/Zn(OH)2 Nanosheets Using Ionic Layer Epitaxy”, Korean Journal of Materials Research, 32(3), 153-160, 2022.
6. G.H. Ryu*, G.S. Jung*, H.J. Park, R-J. Chang, J. H. Warner*, “Atomistic Mechanics of Torn Back Folded Edges of Triangular Voids in Monolayer WS2”, Small, 17(52), 2104238, 2021.
7. J. Chen, Y. Wang, W. Xu, Y. Wen, G.H. Ryu, J. C. Grossman, J. H. Warner*, “Atomic Structure of Dislocations and Grain Boundaries in Two-Dimensional PtSe2”, ACS Nano, 15(10), 16748-16759, 2021.
8. G. Yoo, G.H.Ryu, B-R, Koo*, G-H. An*, “Interfacial Defect Engineering via Combusted Graphene in V2O5 Nanochips to Develop High-Rate and Stable Zinc-Ion Batteries”, Ceramics International, 47, 31817-31825, 2021.
9. J.C. Yoon, Z. Lee, G.H. Ryu*, “Atomic Arrangements of Graphene-like ZnO”, Nanomaterials, 11(7), 1833, 2021.
10. G.H. Ryu, S. Lee, J.H. Kim, G-D Lee*, Z. Lee*, “OH Molecule-Involved Formation of Point Defects in Monolayer Graphene”, Nanotechnology, 32(2), 025704, 2021.
11. G.H. Ryu*, R-J. Chang, “Sequential Conversion from Line Defects to Atomic Clusters in Monolayer WS2”, Applied Microscopy, 50(27), 2020.
12. W. Xu, S. Li, G.H. Ryu, P. Tang, M. Paste, J. H. Warner*, “Single-Step Chemical Vapor Deposition Growth of Platinum Nanocrystal: Monolayer MoS2 Dendrite Hybrid Materials for Efficient Electrocatalysis”, Chemistry of Materials, 32(19), 8243-8256, 2020.
13. H. Xu, J. Zhu, G. Zu, W. Liu, X. Li, C. Li, G.H. Ryu, W. Xu, X. Han, Z. Guo, J. H. Warner, J. Wu, H. Liu, “Spatially Bandgap-Graded MoS2(1−x)Se2x Homojunctions for Self-Powered Visible–Near-Infrared Phototransistors”, Nano-Micro Letters, 12(26), 2020.
14. G.H. Ryu, J. Chen, Y. Wen, J. H. Warner*, “In-Situ Atomic-Scale Dynamics of Thermally Driven Phase Transition of 2D Few-Layered 1T PtSe2 into Ultrathin 2D non-layered PtSe Crystals”, Chemistry of Materials, 31(23), 9895-9903, 2019.
15. G.H. Ryu, T. Zhu, J. Chen, S. Sinha, J. C. Grossman, J. H. Warner*, “Striated 2D Lattice with Sub-nm 1D Etch Channels by Controlled Thermally Induced Phase Transformations of PdSe2”, Advanced Materials, 31(46), 1904251, 2019.
16. J. Chen, G.S. Jung, G.H. Ryu, R-J. Chang, S. Zhou, Y. Wen, M. J. Buehler, J. H. Warner*, “Atomically Sharp Dual Grain Boundaries in 2D WS2 Bilayers”, Small, 15, 1902590, 2019.
17. R-J. Chang, Y. Sheng, G.H. Ryu, N. Mkhize, T. Chen, Y. Lu, J. Chen, J.K. Lee, H. Bhaskaran,
J. H. Warner*, “Postgrowth Substitutional Tin Doping of 2D WS2 Crystals Using Chemical Vapor Deposition”, ACS Applied Materials & Interfaces, 11, 24279-24288, 2019.
18. J. Chen, G.H. Ryu, S. Sinha, J. H. Warner*, “Atomic Structure and Dynamics of Defects and Grain Boundaries in 2D Pd2Se3 Monolayers”, ACS Nano, 13(7), 8256-8264, 2019.
19. G.H. Ryu, J. Chen, Y. Wen, S. Zhou, R.-J. Chang, J. H. Warner*, “Atomic Structural Catalogue of Defects and Vertical Stacking in 2H/3R Mixed Polytype Multilayer WS2 Pyramids”, Nanoscale, 11(22), 10859-10871, 2019.
20. J. Chen, S. Zhou, Y. Wen, G.H. Ryu, C. Allen, Y. Lu, A. I. Kirkland, J. H. Warner*, “In Situ High Temperature Atomic Level Dynamics of Large Inversion Domain Formations in Monolayer MoS2”, Nanoscale, 11, 1901-1913, 2019.
21. Y. Lu, T. Chen, G.H. Ryu, H. Huang, Y. Sheng, R.-J. Chang, J. H. Warner*, “Self-Limiting Growth of High-Quality 2D Monolayer MoS2 by Direct Sulfurization Using Precursor-Soluble Substrates for Advanced Field-Effect Transistors and Photodetectors”, ACS Applied Nano Materials, 2(1), 369-378, 2018.
22. G.H. Ryu, A.France-Lanord, Y. Wen, S. Zhou, J. C. Grossman and J.H. Warner*, “Atomic Structure and Dynamics of Self-Limiting Sub-Nanometer Pores in Monolayer WS2”, ACS Nano, 12(11), 11638-11647, 2018.
23. Y. Zhao, J.Song, G.H. Ryu, K.Y. Ko, W.J. Woo, Y.Kim, D. Kim, J.H. Lim, S. Lee, Z. Lee, J. Park and H. Kim*, “Low-Temperature Synthesis of 2D MoS2 on a Plastic Substrate for a Flexible gas Sensor”, Nanoscale, 10, 9338-9345, 2018.
24. G.H. Ryu, J. Lee, D. Kang, H.J. Jo, H.S. Shin and Z. Lee*, “Effects of Dry Oxidation Treatments on Monolayer Graphene”, 2D Materials, 4(2), 024011, 2017.
25. T.Y. Ko, A. Jeong, W. Kim, J.H. 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(1), 014003, 2017.
26. K. Gupta, T. Liu, R. Kavian, H.G. Chae, G.H. Ryu, Z. Lee, S.W. Lee and S. Kumara*, “High Surface Area Carbon from Polyacrylonitrile for High Performance Electrochemical Capacitive Energy Storage”, Journal of Materials Chemistry A, 4, 18294-18299, 2016.
27. J.G. Song, S.J. Kim, W.J. Woo, Y. Kim, I.K. Oh, G.H. Ryu, Z. Lee, J.H. Lim, J. Park* and H. Kim*, “Effect of Al2O3 Deposition on Performance of Top-Gated Monolayer MoS2 Based Field Effect Transistor”, ACS Applied Materials & Interfaces, 8 (41), 28130–28135, 2016.
28. Y. Kim, H. Bark, G.H. Ryu, Z. Lee and C. Lee*, “Wafer Scale Monolayer MoS2 Grown by Chemical Vapor Deposition using a Reaction of MoO3 and H2S”, Journal of Physics: Condensed Matter, 28, 184002, 2016.
29. J.W. Lee, K. Kim, S. Han, G.H. Ryu, Z. Lee and H. Cheong*, “Raman Signatures of Polytypism in Molybdenum Disulfide”, ACS Nano, 10 (2), 1948-1953, 2016.
30. G.H. Ryu, J. Lee, N.Y. Kim, Y.D. Lee, Y. Kim, M.J. Kim, C. Lee and Z. Lee*, “Line-Defect
Mediated Formation of Hole and Mo Clusters in Monolayer Molybdenum Disulfide”, 2D Materials, 3(1), 014002, 2016.
31. K. Park, Y. Kim, J.G. Song, S.J. Kim, C.W. Lee, G.H. Ryu, Z. Lee, J. Park and H. Kim*, “Uniform, Large-Area Self-Limiting Layer Synthesis of Tungsten Diselenide”, 2D Materials, 3(1), 014004, 2016.
32. Y. Kim, J.G. Song, Y.J. Park, G.H. Ryu, S.H. Hwang, P.J. Jeon, C.W. Lee, W.J. Woo, T. Choi,
H. Jung, J.M. Myoung, S. Im, Z. Lee, J.H. Ahn, J. Park and H. Kim, “Self-Limiting Layer Synthesis of Transition Metal Dichalcogenides”, Scientific Reports, 6, 18754, 2015.
33. R.Y. Tay, H.J. Park, G.H. Ryu, D. Tan, S.H. Tsang, H. Li, W. Liu, E.H.T. Teo*, Z. Lee, Y. Lifshitz and R.S. Ruoff, “Synthesis of Aligned Symmetrical Multifaceted Monolayer Hexagonal Boron Nitride Single Crystals on Resolidified Copper”, Nanoscale, 8, 2434–2444, 2016.
34. J. Kim, S. Kwon, D-H Cho, B. Kang, H. Kwon, Y. Kim, S. Park, G.Y. Jung, E. Shin, W-G. Kim,
H. Lee, G.H. Ryu, M. Choi, T.H. Kim, J. Oh, S. Park, S.K. Kwak, S.W. Yoon, D. Byun, Z. Lee and C. Lee*, “Direct Exfoliation and Dispersion of Two-Dimensional Materials in Pure Water via Temperature Control”, Nature Communications, 6, 8294, 2015
35. J.G. Song, G.H. Ryu, S.H. Hwang, S. Sim, C.W. Lee, T. Choi, H. Jung, Y. Kim, Z. Lee, J.M. Myoung, C. Dussarrat, C. Lansalot-Matras, J. Park, H. Choi and H. Kim*, “Controllable Synthesis of Molybdenum Tungsten Disulfide Alloy for Vertically Composition-Controlled Multilayer”, Nature Communications, 6, 7817, 2015.
36. H. J. Park, G.H. Ryu, Z. Lee*, “Hole Defects on Two-Dimensional Materials Formed by Electron Beam Irradiation: Toward Nanopore Devices”, Applied Microscopy, 45 (3), 107-114. 2015.
37. G. Kim, H. Lim, K.Y. Ma, A.R. Jang, G.H. Ryu, M. Jung, H.J. Shin, Z. Lee and H.S. Shin*, “Catalytic Conversion of Hexagonal Boron Nitride to Graphene for In-Plane Heterostructures”, Nano Letters, 15 (7), 4769-4775, 2015.
38. G.H. Ryu, H.J. Park, J. Ryou, J. Park, J. Lee, G. Kim, H.S. Shin, C.W. Bielawski, R.S. Ruoff, S. Hong and Z. Lee*, “Atomic-Scale Dynamics of Triangular Hole Growth in Monolayer Hexagonal Boron Nitride under Electron Irradiation”, Nanoscale, 7, 10600-10605, 2015.
- Feature on a front cover of 2015
39. Y. Choi, G.H. Ryu, S.H. Min, B.R. Lee, M.H. Song, Z. Lee and B.S. Kim*, “Interface Controlled Synthesis of Heterodimeric Silver-Carbon Nanoparticles Derived from Polysaccharides”, ACS Nano, 8 (11), 11377-11385, 2014.
40. Y.N. Jo, M.S. Park, E.Y. Lee, J. Lee, J.G. Kim, K.J. Hong, S.I. Lee, H.Y. Jeong, G.H. Ryu, Z. Lee and Y.J. Kim*, “Increasing Reversible Capacity of Soft Carbon Anode by Phosphoric Acid Treatment”, Electrochimica Acta, 146 (10), 630-637, 2014.
41. J. Lee, J. Baek, G.H. Ryu, M.J. Lee, S. Oh, S.K. Hong, B.H. Kim, S.H. Lee, B.J. Cho, Z. Lee* and S. Jeon*, “High-Angle Tilt Boundary Graphene Domain Recrystallized from Mobile Hot-Wire-Assisted Chemical Vapor Deposition System”, Nano Letters, 14 (8), 4352-4359, 2014.
42. J.H. Chu, J. Kwak, S.D. Kim, M.J. Lee, J.J. Kim, S.D. Park, J.K. Choi, G.H. Ryu, K. Park, S.Y. Kim, J.H. Kim, Z. Lee, Y.W. Kim and S.Y. Kwon*, “Monolithic Graphene Oxide Sheets with Controllable Composition”, Nature Communications, 5, 3383, 2014.
43. Y. Lee, J. Lee, H. Bark, I.K. Oh, G.H. Ryu, Z. Lee, H. Kim, J.H. Cho, J.H. Ahn and C. Lee*, “Synthesis of Wafer-Scale Uniform Molybdenum Disulfide Films with Control over the Layer Number using a Gas Phase Sulfur Precursor”, Nanoscale, 6, 2821-2826, 2014.
44. J. Ryu, Y. Kim, D. Won, N. Kim, J.S. Park, E.K. Lee, D. Cho, S.P. Cho, S.J. Kim, G.H. Ryu,
H.A.S. Shin, Z. Lee, B.H. Hong and S. Cho*, “Fast Synthesis of High-Performance Graphene Films by Hydrogen-Free Rapid Thermal Chemical Vapor Deposition”, ACS Nano, 8 (1), 950- 956, 2014.
45. G.H. Ryu, H.J. Park, N.Y. Kim and Z. Lee*, “Atomic Resolution Imaging of Rotated Bilayer Graphene Sheets using a Low kV Aberration-Corrected TEM”, Applied Microscopy, 42 (4), 218-22, 2012.
- Selected as the journal cover of December 2012
- Selected as the best paper published in 2012 in the Korean Society of Microscopy Journals
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