• Atomic and Electronic Structure Studies of Quantum Materials and Topological Materials
• Light–Matter Interaction Studies Based on Nanoscale Optical Measurements of Metamaterials and Nanomaterials
• Investigation of Novel Physical Properties via Dimensional Integration of Low-Dimensional Materials

• Ph.D., Department of Physics, College of Natural Sciences, Seoul National University (2006)
• M.Sc., Department of Physics, College of Natural Sciences, Seoul National University (2000)
• B.Sc., Department of Physics, College of Natural Sciences, Seoul National University (1998)

• Professor (2011–Present), Sungkyunkwan University, SKKU Advanced Institute of Nano Technology (SAINT) & Department of Nano Engineering
• Visiting Researcher (2018–2019), Samsung Advanced Institute of Technology (SAIT)
• Adjunct/Contract Researcher (2011), Samsung Advanced Institute of Technology (SAIT)
• Postdoctoral Researcher (2006–2011), Center for Nanoscale Science and Technology (CNST), National Institute of Standards and Technology (NIST), United States

• (2025) Advancing nano-optical investigations: Metallic and dielectric Mie particles in SPM techniques and their emerging applications. APPLIED PHYSICS REVIEWS. 12, 3
• (2025) Band gap and photo charge carrier tailoring in zirconium doped carbon nitride using ZrCl4–DMF–melamine for photocatalytic degradation of rhodamine B. CARBON. 13, 14
• (2025) Conductive-bridge interlayer contacts for two-dimensional optoelectronic devices. NATURE ELECTRONICS. 8, 4
• (2025) Enhanced electromagnetic interference shielding in cement composites utilizing carbon fiber clustered networks with dual different lengths. CARBON. 233
• (2024) Sliding grain boundary formations and their atomic and electronic structures in 1T’-WTe2. Applied Surface Science. 669
• (2024) Unraveling the Deposition and Dissolution Behavior of the Ag-Modified Li Surface Based on Electrochemical Atomic Force Microscopy. ACS APPLIED MATERIALS & INTERFACES. 16, 36
• (2024) Kelvin Probe Force Microscopy and Electrochemical Atomic Force Microscopy Investigations of Lithium Nucleation and Growth: Influence of the Electrode Surface Potential. JOURNAL OF PHYSICAL CHEMISTRY LETTERS. 15, 28
• (2024) Charged Black-hole-like Electronic Structure Driven by Geometric Potential of Two-dimensional Semiconductors. ADVANCED MATERIALS. 1, 1
• (2024) Highly Transparent and Flexible All-Nanofiber-Based Piezocomposite Containing BaTiO3-Embedded P(VDF-TrFE) Nanofibers for Harvesting and Monitoring Human Kinetic Movements. ADVANCED FIBER MATERIALS. 6, 5
• (2024) Probing Inherent Optical Anisotropy in Substrates via Direct Nanoimaging of Mie Scattering. ACS NANO. 18, 19
• (2024) Synthesis of N-doped graphene film with tunable graphitic and pyridinic doping content. DIAMOND AND RELATED MATERIALS. 144
• (2024) Charged Exciton Generation by Curvature-Induced Band Gap Fluctuations in Structurally Disordered Two-Dimensional Semiconductors. ACS NANO. 18, 14
• (2024) Cement composites with carbon fiber for electromagnetic interference shielding applications. CARBON. 220
• (2023) Standing wave patterns in graphene systems studied using scanning tunneling spectroscopy. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A. 41, 6
• (2023) Defect Identification of Nitrogen-Doped Graphene on Pt (111) Using Atomic Force Microscopy and Scanning Tunneling Microscopy. JOURNAL OF PHYSICAL CHEMISTRY C. 127, 42
• (2023) Transparent, Flexible, and Highly Sensitive Piezocomposite Capable of Harvesting and Monitoring Kinetic Movements of Microbubbles in Liquid. ADVANCED FUNCTIONAL MATERIALS. 33, 43
• (2023) Latent and controllable doping of stimuli-activated molecular dopants for flexible and printable organic thermoelectric generators. CHEMICAL ENGINEERING JOURNAL. 470
• (2023) Probing depth-dependent inhomogeneous lithium concentration in thick LiNi0.88Co0.09Al0.03O2 cathodes for lithium-ion batteries. JOURNAL OF ALLOYS AND COMPOUNDS. 943, 1
• (2023) Degradation phenomena of quantum dot light-emitting diodes induced by high electric field. NANOTECHNOLOGY. 34, 26
• (2023) Designing a Length-Modulated Azide Photocrosslinker to Improve the Stretchability of Semiconducting Polymers. ADVANCED FUNCTIONAL MATERIALS. 33, 23

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• Seamless Atomic Monolayer of Hexagonal Boron Nitride and Method of Fabricating the Same. Application No. 10-2395-7740000, May 3, 2022, Republic of Korea
• Graphene and Method of Preparing the Same. Application No. US 16/747,873, May 21, 2020, United States
• Wafer-Scale Direct Growth Method of Single-Crystalline Monolayer Graphene Exhibiting Epitaxy and Self-Limited Monolayer Formation on Crystalline Dielectric SiON–SiC Surfaces Using Chemical Vapor Deposition without Catalyst Metals. Application No. 10-2017-0092874, Mar 19, 2019, Republic of Korea
• Seamless Hexagonal Boron Nitride Atomic Monolayer Thin Film and Method of Fabricating the Same. Application No. US 20160237558 A1, May 8, 2018, United States
• Heterogeneous Layered Structure, Method of Preparing the Same, and Electronic Device Including the Same. Application No. US 14/211,327, Dec 6, 2016, United States
• Magnetoresistive Structure, Method of Manufacturing the Same, and Electronic Device Including the Same. Application No. US 14/282,470, Jun 14, 2016, United States
• Method of Forming a Multilayer Graphene Structure. Application No. US 14/309,128, Mar 15, 2016, United States
• Method of Forming a Multilayer Graphene Structure. Application No. US 14/309,128, Mar 15, 2016, United States

• (2018) Minister’s Commendation, Ministry of Science and ICT, Republic of Korea — Contribution to the Advancement of Nanotechnology
• (2014) Cheongam Science Fellowship – Cheongam Young Faculty, POSCO Cheongam Foundation
• (2006) Outstanding Doctoral Dissertation Award, Department of Physics, Seoul National University
• (2006) Postdoctoral Overseas Research Scholarship for Fostering the Next Generation of Scholars in Science and Engineering, National Research Foundation of Korea (NRF)

• (2017) Synthesis and Characterization of Atomic and Electronic Properties of Graphene-Based Heterostructures. 5th International Conference on Analytical Science & Technology, Republic of Korea
• (2017) Synthesis and Characterization of Atomic and Electronic Properties of Graphene-Based Heterostructures. 2017 Collaborative Conference on Materials Research (CCMR), Republic of Korea
• (2016) Photofluidic Near-Field Mapping of Superspherical Gold Nanoparticles. Proc. SPIE 9925, Nanoimaging and Nanospectroscopy, United States
• (2016) Photofluidic Near-Field Mapping of Superspherical Gold Nanoparticles (Conference Presentation). SPIE Proceedings, United States
• (2016) Synthesis and Characterization of Atomic and Electronic Properties of Graphene-Based Heterostructures. EMN Summer 2016, Mexico
• (2015) Atomic and Electronic Properties of Graphene-Based Heterostructures. The International Chemical Congress of Pacific Basin Societies 2015, United States
• (2015) Scanning Tunneling Microscopy and Spectroscopy Study on Graphene. SpectroNanoscopy Workshop 2015, Republic of Korea
• (2013) SPM Study of CVD-Grown Graphene on h-BN Films. The 8th International Conference on Advanced Materials and Devices, Republic of Korea
• (2013) SPM Study of Graphene Directly CVD-Grown on h-BN Films. Fall Meeting of the Korean Physical Society, Republic of Korea
• (2013) Clean Graphene Transfer Using h-BN Instead of PMMA. The Fourth SRC Summer Workshop on Topological Matter, Republic of Korea
• (2013) Study of Catalytic Growth of Graphene on h-BN by Kelvin Probe Force Microscopy. The Fourth SRC Summer Workshop on Topological Matter, Republic of Korea
• (2013) SPM Study of CVD-Grown Graphene on h-BN Films. NUS–SKKU Joint Workshop, Singapore
• (2013) Atomic and Electronic Structure of Graphene/Hexagonal Boron Nitride Grown by Chemical Vapor Deposition. 2013 Spring Meeting of the Korean Society of Surface Engineering, Republic of Korea
• (2013) Synthesis and Characterization of Directly Grown Large-Area Graphene on h-BN. American Physical Society (APS) March Meeting 2013, United States
• (2013) STM/STS Study of Large-Area Graphene Directly CVD-Grown on h-BN Films. 2013 Plasma & Nano Technology Workshop, Republic of Korea
• (2012) STM/STS Study of Large-Area Graphene Directly CVD-Grown on h-BN Films. 1st International Workshop on Convergence in NanoScience, Sungkyunkwan University, Republic of Korea
• (2012) STM/STS Study of Large-Area Graphene Directly CVD-Grown on h-BN Films. Fall Meeting of the Korean Physical Society, Republic of Korea
• (2012) Energetic and Spatial Study of the N = 1 Landau Level in Graphene. Inaugural PKU–SKKU Joint Workshop: Low-Dimensional Nanomaterials and Device Applications, China
• (2012) Energetic and Spatial Study of the N = 1 Landau Level in Graphene. 3rd Joint Workshop on Advanced Materials: New Progress of Nanomaterials, Dalian University of Technology–Sungkyunkwan University, China
• (2012) Energetic and Spatial Study of the N = 1 Landau Level in Graphene. Spring Meeting of the Korean Physical Society, Republic of Korea