Yun received his BS in chemical engineering in 1992 from Inha University in South Korea. He then moved to KAIST where he received his MS in chemistry in 1995. From 1995 until 2005, Dr. Yun was a materials engineer with the Korean Aerospace Industry company, making organic bulletproof armor for fighter jet pilot seats. He returned to KAIST in 1995 to work in the specialty polymer lab, obtaining his PhD there with Dr. Jin Baek Kim on nanopatterning and chemically amplified photoresists. He joined the materials science department at KAIST for a postdoctoral position where he worked on graphene oxide biomaterials applications using photolithography. Yun joined PME in the fall of 2012 and has a joint assignment at Argonne National Laboratory.
Dr. Yun is the representative from the Nealey Group for the multi-university research initiative (MURI), a project focusing on bringing together expertise from different groups to develop a nanoimprint lithography process. In close collaboration with the University of Minnesota, he is investigating various materials for their feasibility in implementation of nanoimprint lithography in a continuous roll-to-roll (R2R) process. In a different project, Yun is studying the wetting behavior of graphene oxide and whether it can be tuned through various process treatments. Finally, he is actively involved in several other projects in the Nealey group involving the synthesis and use of topcoat materials to direct block copolymer assembly.
The Role of Water Volume Fraction on Water Adsorption in Anion Exchange Membranes
Gervasio Zaldivar, Ruilin Dong, Joan M Montes de Oca, Ge Sun, Riccardo Alessandri, Christopher G Arges, Shrayesh N Patel, Paul F Nealey, Juan J de Pablo, Macromolecules, 2025
Role of Crosslinking and Backbone Segmental Dynamics on Ion Transport in Hydrated Anion-Conducting Polyelectrolytes
Zhongyang Wang, Kai Wang, Christopher Eom, Yuxi Chen, Ge Sun, Mincheol Kim, Joan M Montes de Oca, Dongyue Liang, Kushal Bagchi, Shrayesh N Patel, Juan J de Pablo, Paul F Nealey, Advanced Functional Materials, 2025
IEC-Independent Coupling between Water Uptake and Ionic Conductivity in Anion-Conducting Polymer Films
Joan M Montes de Oca, Ruilin Dong, Gervasio Zaldivar, Ge Sun, Zhongyang Wang, Shrayesh N Patel, Paul F Nealey, Juan J de Pablo, Macromolecules, 2025
Water-mediated ion transport in an anion exchange membrane
Zhongyang Wang, Ge Sun, Nicholas HC Lewis, Mrinmay Mandal, Abhishek Sharma, Mincheol Kim, Joan M Montes de Oca, Kai Wang, Aaron Taggart, Alex B Martinson, Paul A Kohl, Andrei Tokmakoff, Shrayesh N Patel, Paul F Nealey, Juan J de Pablo. Nature Communications. 2025.
Directed self-assembly of block copolymer films on atomically-thin graphene chemical patterns
Chang, TH; Xiong, SS; Jacobberger, RM; Mikael, S; Suh, HS; Liu, CC; Geng, DL; Wang, XD; Arnold, MS; Ma, ZQ; Nealey, PF. Directed self-assembly of block copolymer films on atomically-thin graphene chemical patterns. Scientific Reports. 2016. Vol. 6, Pg. 31407.
Directed self-assembly of high-chi block copolymer for nano fabrication of bit patterned media via s
Xiong, S. S. Chapuis, Y. A. Wan, L. Gao, H. Li, X. Ruiz, R. Nealey, P. F.. Directed self-assembly of high-chi block copolymer for nano fabrication of bit patterned media via s. Nanotechnology. 2016. Vol. 27, Pg. 415601.
Directed Self-Assembly of Triblock Copolymer on Chemical Patterns for Sub-10-nm Nanofabrication via
Xiong, SS; Wan, L; Ishida, Y; Chapuis, YA; Craig, GSW; Ruiz, R; Nealey, PF. Directed Self-Assembly of Triblock Copolymer on Chemical Patterns for Sub-10-nm Nanofabrication via. ACS Nano. 2016. Vol. 10, Pg. 7855–7865.
Roadmap on optical metamaterials
Urbas, A. M. Jacob, Z. Dal Negro, L. Engheta, N. Boardman, A. D. Egan, P. Khanikaev, A. B. Menon, V. Ferrera, M. Kinsey, N. DeVault, C. Kim, J. Shalaev, V. Boltasseva, A. Valentine, J. Pfeiffer, C. Grbic, A. Narimanov, E. Zhu, L. X. Fan, S. H. Alu, A. Poutrina, E. Litchinitser, N. M. Noginov, M. A. MacDonald, K. F. Plum, E. Liu, X. Y. Nealey, P. F. Kagan, C. R. Murray, C. B. Pawlak, D. A. Smolyaninov, I. I. Smolyaninova, V. N. Chanda, D.. Roadmap on optical metamaterials. Journal of Optics. Vol. 18, Pg. 093005.
Post-directed-self-assembly membrane fabrication for in situ analysis of block copolymer structures
J Ren, L E Ocola, R Divan, D A Czaplewski, T Segal-Peretz, S Xiong, R J Kline, C G Arges and P F Nealey. Post-directed-self-assembly membrane fabrication for in situ analysis of block copolymer structures. Nanotechnology. 2016. Vol. 27, Pg. 435303.