Academic Experiences
· 1998 – 2005 : B.S. in Materials Science and Engineering, Seoul National University
· 2005 – 2007 : M.S. in Materials Science and Engineering, Seoul National University
· 2008 – 2013 : Ph.D in Materials Science and Engineering, Stanford University
Career
· 2024 ~Present: Assistant Professor in Materials Science and Engineering, Seoul National University
· 2016~2024 : Assistant Professor in Mechanical Engineering, The University of Texas at Dallas
· 2013~2016 : Postdoctoral Researcher in School of Engineering, Brown University
· 2007~2008 : Digital Simulation Engineer, Renault Samsung Motors
Research Interests
1. Fundamental deformation mechanisms (plasticity, fracture)
– Size-dependent dislocation plasticity at small scale
– Dislocation dynamics simulations in a confined volume
– Dislocation interaction with grain boundaries/crack
– Multi-scale defect dynamics modeling
– Micromechanical damage model
– Deformation and failure of metals under extreme environments
– Material by design with Data-driven approach
2. Optimal design in nanostructures
– Fundamental deformation/failure mechanism of nanostructures.
– Design for optimal performance by defect engineering
3. Reliability Analysis in Nanostructures
– Failure mechanisms in thin (multilayered) metallic film in Microelectronics.
– Ratcheting failure in Electronic chips.
– Microscopic model for fracture of Si anode in lithium ion batteries
– Plastic deformation due to swelling of a Si anode in lithium ion batteries during battery cycles
Selected Publications
Prediction of dislocation – grain boundary interactions in fcc aluminum bicrystals using a modified continuum criterion and machine learning methods, Materialia (2023)
Dislocation interactions at the grain boundary in FCC bicrystals: An atomistically-informed dislocation dynamics study, Acta Materialia (2022)
Effect of size and orientation on stability of dislocation networks upon torsion loading and unloading in FCC metallic micropillars, Acta Materialia, (2021).
Intrinsic size dependent plasticity in BCC micro-pillars under uniaxial tension and pure torsion, Extreme Mechanics Letter (2020)
Latent hardening/softening behavior in tension and torsion combined loadings of single crystal FCC micropillars, Acta Materialia (2020).
Size-dependent fracture of Si nanowire battery anodes, Journal of the Mechanics and Physics of Solids, (2011).