Group Members

2D Materials and Device Design Team

Seonha Park, Integrated MS-PhD Program (2021. 03~present), Team Lead

B.S., Mechanical Engineering, Pusan National University, 2021

• Research Topic: Graphene, MoS2 neuron synaptic device, Nanofabrication, Multi-modal imaging, Image analytics, Unsupervised machine learning

• Publications and Awards:

1. Min Gi Choi, Alex Belianinov, Alison Pawlicki, Seonha Park, Habeom Lee, Olga S. Ovchinnikova, and Songkil Kim*, "Nanoscale Friction of CVD Single-Layer MoS2 with Controlled Defect Formation", Surfaces and Interfaces 26, 101437 (2021). 

2. Min Gi Choi, Seonha Park, Habeom Lee and Songkil Kim*, "Correlating Surface Structures and Nanoscale Friction of CVD Multi-Layer Graphene", Applied Surface Science  584, 152572 (2022). 

3. Seonha Park, Min Gi Choi, Seokjun Kim, and Songkil Kim*, "Frictional Anisotropy of CVD Bi-Layer Graphene Correlated with Surface Corrugated Structures", Tribology and Lubricants 38(6), 235 (2022).

4. Seokjun Kim, Beongwan Kim, Seonha Park, Won Seok Chang, Haeyong Kang, Habeom Lee and Songkil Kim*, "Hysteretic Behavior of All CVD h-BN/Graphene/h-BN Field-Effect Transistors by Interfacial Charge Trap", Surfaces and Interfaces 36, 102615 (2023).

5.  Jeonghan Kim, Seonha Park, Mingi Choi, Seokjun Kim, Jeongbeom Heo, Eunseop Yeom, Seokho Kim, Habeom Lee and Songkil Kim*, "Simply Controlling the Surface Structure of Graphene Oxide Thin Films Using Multiple Drop-Casting", Diamond and Related Materials, accepted.

6. Seonha Park, Phuong Lien Nguyen, Ivan V. Vlassiouk, Mingi Choi, Seokjun Kim, Jaekwang Lee and Songkil Kim*, "Unveiling the Mechanism of  Surface Corrugation Formation on a Quasi Free-Standing Bi-Layer Graphene via Experimental and Modeling Investigations", Applied Surface Science, accepted.

7. Sieun Jang, Seonha Park, Seok Joon Yun, Un Jeong Kim, Ilia Ivanov, Sujoy Ghosh, Steven Randolph, and Songkil Kim*, "Raman Laser-Induced Structural Modification in CVD-Grown Monolayer MoS2 for Multi-Purposed Nanofabrication", ACS Applied Nano Materials, accepted.

8.  Jeong Han Kim, Seonha Park, Mingi Choi, Habeom Lee and Songkil Kim*, "Unveiling the Deposition Mechanism of Ultra-Thin Graphene Oxide Flakes in an Aqueous Colloidal Phase", Applied Surface Science, accepted.

9. 2021 PNU-Fellowship Award

10. Best poster presentation award, 2021 Korean Tribology Society (KTS) Fall Conference.

11. 2022 Innovative research course program supported by PNU BK Four program

12. Best  Oral presentation award, 2022 CSS Conference

13. Best poster presentation award, 2024 KSME Micro/Nano Engineering Sector Spring Conference

14. Best Oral presentation award, 2024 CSS Conference

15. 2024 Innovative research course program supported by PNU BK Four program

Sieun Jang, MS Program (2023. 03~present)

B.S., Mechanical Engineering, Pusan National University, 2023

• Research Topic:  MoS2 phase engineering, nanoscale multimodal imaging

• Publications and Awards:

1. Sieun Jang, Seonha Park, Seok Joon Yun, Un Jeong Kim, Ilia Ivanov, Sujoy Ghosh, Steven Randolph, and Songkil Kim*, "Raman Laser-Induced Structural Modification in CVD-Grown Monolayer MoS2 for Multi-Purposed Nanofabrication", ACS Applied Nano Materials, accepted.

2. Best poster presentation award, 2023 KSME Micro/Nano Engineering Sector Spring Conference.

3. 2023 Innovative research course program supported by PNU BK Four program

4. Best Oral presentation award, 2024 CSS Conference

2D Materials Tribology Physics Team

Mingi Choi, Integrated MS-PhD Program (2020. 09~ present), Team Lead

B.S., Mechanical Engineering, Pusan National University, 2020

• Research Topic: Graphene family, TMDCs, h-BN, Heterostructures, Nanoscale friction, Solid Tribology, Combined solid-liquid Lubrication

• Publications and Awards:

1. Min Gi Choi, Alex Belianinov, Alison Pawlicki, Seonha Park, Habeom Lee, Olga S. Ovchinnikova, and Songkil Kim*, "Nanoscale Friction of CVD Single-Layer MoS2 with Controlled Defect Formation", Surfaces and Interfaces 26, 101437 (2021). 

2. Min Gi Choi, Seonha Park, Habeom Lee and Songkil Kim*, "Correlating Surface Structures and Nanoscale Friction of CVD Multi-Layer Graphene", Applied Surface Science  584, 152572 (2022)..

3. Seonha Park, Min Gi Choi, Seokjun Kim, and Songkil Kim*, "Frictional Anisotropy of CVD Bi-Layer Graphene Correlated with Surface Corrugated Structures", Tribology and Lubricants, accepted.

4.  Jeonghan Kim, Seonha Park, Mingi Choi, Seokjun Kim, Jeongbeom Heo, Eunseop Yeom, Seokho Kim, Habeom Lee and Songkil Kim*, "Simply Controlling the Surface Structure of Graphene Oxide Thin Films Using Multiple Drop-Casting", Diamond and Related Materials, accepted.

5.  Seonha Park, Phuong Lien Nguyen, Ivan V. Vlassiouk, Mingi Choi, Seokjun Kim, Jaekwang Lee and Songkil Kim*, "Unveiling the Mechanism of  Surface Corrugation Formation on a Quasi Free-Standing Bi-Layer Graphene via Experimental and Modeling Investigations", Applied Surface Science, accepted.

6. Mingi Choi, Ivan V. Vlassiouk, Won-Seok Kim, Jeong Han Kim, Anirundha V. Sumant, Ji-Woong Jang, Junho Suh, Youngjun Jang and Songkil Kim*, Graphene Oxide Gluing Layer Enabling Macroscale Tribology Applications of Pristine Graphene, Friction, accepted.

7.  Jeong Han Kim, Seonha Park, Mingi Choi, Habeom Lee and Songkil Kim*, "Unveiling the Deposition Mechanism of Ultra-Thin Graphene Oxide Flakes in an Aqueous Colloidal Phase", Applied Surface Science, accepted.

8. 2020 PNU-Fellowship Award

9. Best oral presentation award, 2021 Korean Tribology Society (KTS) Fall Conference.

10. Best poster presentation award, 2022 CSS Conference

11. 2022 PNU-ME BK Best Graduate Student Award

12. 2023 PNU-ME BK Best Graduate Student Award

13. 2023 Innovative research course program supported by PNU BK Four program

14. NRF PhD Research Support Grant Awarded, 2023.09~2025.08

Wonseok Kim, Research Associate (2024. 09~present), Co-Affiliated at the PNU HMEC(Core Facility)

Research Associate, co-affillated at the ANT-Lab and the PNU Hybrid Innovative Manufacturing Engineering Center (Core Facility)

B.S., Materials Science and Engineering, Silla University, 2021

• Research Topic: 2D Materials, Solid Tribology, Diamond-Like Carbon Coating, Physical Vapor Deposition (PVD)

• Publications and Awards:

1. Won-Seok Kim, Songkil Kim, Young-Jun Jang, and Jongkuk Kim, "A Study on the Wear Behavior of Tetrahedral Amorphous Carbon Coatings Based on Bending Angles of the Filtered Cathodic Vacuum Arc with Different Arc Discharge Currents", Tribology and Lubricants 38(3), 101 (2022).

2. Mingi Choi, Ivan V. Vlassiouk, Won-Seok Kim, Jeong Han Kim, Anirundha V. Sumant, Ji-Woong Jang, Junho Suh, Youngjun Jang and Songkil Kim*, Graphene Oxide Gluing Layer Enabling Macroscale Tribology Applications of Pristine Graphene, Friction, accepted.

3. Best poster presentation award, 2021 Korean Tribology Society (KTS) Spring Conference.

4. Best oral presentation award, 2021 Korean Tribology Society (KTS) Fall Conference.

Jiwoong Jang, Integrated MS-PhD Program (2023. 03~present), Co-advised with Dr. Youngjun Jang (KIMS)

B.S., Mechanical Engineering, Pusan National University, 2023

• Research Topic: Diamond-Like Carbon Coating, Physical Vapor Deposition (PVD)

• Publications and Awards:

1. Mingi Choi, Ivan V. Vlassiouk, Won-Seok Kim, Jeong Han Kim, Anirundha V. Sumant, Ji-Woong Jang, Junho Suh, Youngjun Jang and Songkil Kim*, Graphene Oxide Gluing Layer Enabling Macroscale Tribology Applications of Pristine Graphene, Friction, accepted.

Yeomyung Cha, MS Program (2023. 03~present), Co-advised with Dr. Youngjun Jang (KIMS)

B.S., Mechanical Engineering, Chosun University, 2024

• Research Topic: Diamond-Like Carbon Coating, Physical Vapor Deposition (PVD)

• Publications and Awards:

Seongyun Lee, Undergraduate Researcher (2025. 08~present)

B.S., Mechanical Engineering, Pusan National University, 2022~

• Research Topic: 2D Materials, Thin Film Process, Solid Tribology

• Publications and Awards:

2D Materials-Based Thin Film Design Team

Jeonghan Kim, Integrated MS-PhD Program (2021. 03~present), Team Lead

B.S., Mechanical Engineering, Pusan National University, 2021

• Research Topic: 2D nanomaterial ink, 2D Printed electronics, 2D nanomaterial-based sensors

• Publications and Awards:

1.  Jeonghan Kim, Seonha Park, Mingi Choi, Seokjun Kim, Jeongbeom Heo, Eunseop Yeom, Seokho Kim, Habeom Lee and Songkil Kim*, "Simply Controlling the Surface Structure of Graphene Oxide Thin Films Using Multiple Drop-Casting", Diamond and Related Materials, accepted.

2. Mingi Choi, Ivan V. Vlassiouk, Won-Seok Kim, Jeong Han Kim, Anirundha V. Sumant, Ji-Woong Jang, Junho Suh, Youngjun Jang and Songkil Kim*, Graphene Oxide Gluing Layer Enabling Macroscale Tribology Applications of Pristine Graphene, Friction, accepted.

3.  Jeong Han Kim, Seonha Park, Mingi Choi, Habeom Lee and Songkil Kim*, "Unveiling the Deposition Mechanism of Ultra-Thin Graphene Oxide Flakes in an Aqueous Colloidal Phase", Applied Surface Science, accepted.

4. 2021 PNU-Fellowship Award

5. Best poster presentation award, 2022 Korean Microscopy Spring Conference

6. 2022 Innovative research course program supported by PNU BK Four program

7. Best poster presentation award, 2022 CSS Conference

Jinhyuk Moon, Undergraduate Researcher (2025. 05~present)

B.S., Mechanical Engineering, Pusan National University, 2022~

• Research Topic: 2D nanomaterials, Multimodal sensing platform

• Publications and Awards:

Mechanical/Material Design Team

Yeonhong Son, Integrated MS-PhD Program (2021. 03~present) , Team Lead

B.S., Mechanical Engineering, Pusan National University, 2021

• Research Topic: FEM Analysis, Mechanical System Design

• Publications and Awards:

1. Yeonhong Son, Myung-Sung Kim, Hwasup Jang, Songkil Kim*, Yongjin Kim*, "Study on Temperature-Dependent Mechanical Properties of Chloroprene Rubber for Finite Element Analysis of Rubber Seal in an Automatic Mooring System". Journal of the Society of Naval Architects of Korea 59(3), 157 (2022)..

2.  Yeonhong Son, Myung-Sung Kim, Taehyun Lee, Jung Yup Kim, Hwasup Jang, Jongjik Lee, Youngki Kim, Songkil Kim* and Yongjin Kim*, "Experimental and Numerical Evaluation of a Rubber seal in a Vacuum Suction Pad for an Automatic Mooring System", Marine Structure, accepted.

3. 2023 Innovative research course program supported by PNU BK Four program