Woo Hyun Han (W.H.Han)
Ph.D in Physics, J.D. in Law
School of law, Seoul National University (SNU)
SNU, Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
- Email: hanwooh@snu.ac.kr & hanwooh@gmail.com
- GitHub & Google Scholar & LinkedIn
Research interest
- Topological phononic system
- Inverse materials design combined with machine learning potentials
- Tunining Fermi level in bulk with several defects
- Electron-phonon interations in flat bands
- Non-trivial topological materials
- Inverse materials design for functional materials
- Defects in amorphous oxide semiconductors
Education
- J.D. in Law, Mar.2019 - Feb.2022, Seoul National University, Seoul, Republic of Korea
- School of law
- Summa cum laude
- Ph. D in Physics, Mar.2013 - Aug.2018, KAIST, Dajeon, Republic of Korea
- Dissertation: Theoertical study on oxygen-related defects in amorphous oxide semiconductors and novel phases of boron and phosphorus Abstract
- B.S. in Physics, Feb.2010 - Mar.2013, KAIST, Daejeon, Republic of Korea
- Summa cum laude
- Dean’s List of college of natural sciences, KAIST
- Daejeon Science High School, Mar.2008 - Feb.2010, Daejeon, Rebuplic of Korea
- An early graduation
Research experience
-
Postdoctoral Research Associate, Sep. 2018 - Feb. 2019, KAIST, Daejeon, Republic of Korea
Advisored by prof. K. J. Chang - Research assistant, Mar. 2013 - Aug. 2018, KAIST, Daejeon, Republic of Korea
Advisored by prof. K. J. Chang- First-principles calculations and inverse materials design
- Undergradeuate research participation program, Sep. 2011 - Feb. 2012, KAIST, Daejeon, Republic of Korea
Advisered by Prof. J. H. Shin- Fabrication and application of slot-waveguid
Technical Skill
-
First-principles calculations
VASP, Quantum Espresso, Wannier90, EPW, NEB -
Tight-binding modeling
PythTB, WannierTools, PhononTB (My own code) -
Inverse materials design
AMADEUS (Ab initio materials design using conformational space annealing) -
Atomic potential generation using ML algorithm
aenet (one of the contributors) -
Machine-learning tools
Tensorflow(intermediated) -
Programming
Python, Fortran, LaTex
Honors & Awards
Honors
-
Hanwha Scholarship, 2019
Hanwha -
SNU Foundation Scholarship, 2019
Seoul National University Foundation -
Pre-doctoral Fellow of Physics at KAIST, 2017
Korea Advanced Institute of Science and Technology -
Global Ph.D Fellowship, 2013
National Research Foundation of Korea -
Presidential Sceince Scholarship, 2010
Korea Student Aid Foundation
Awards
-
특허법원장상(1등), 2019
제6회 특허소송 변론대회, 특허법원 -
Best Oral Presentation Award, 2017
A new phosphorus allotrope discovered by ab initio materials design, The Korean Physical Society -
Best Oral Presenatation Award, 2017
Pressure-induced transition pathway from alpha-B to gamma-B, The Korean Physical Society -
Best Oral Presentation Award, 2014
The electronic properties of oxygen interstitial defects in a-IGZO, The Korean Physicsal Society
Teaching experience
- Teaching Assistant, Sept. 2016 - Dec. 2016, General physics 2 (undergraduate level)
- Teaching Assistant, Sept. 2015 - Dec. 2015, Quantum mechanics 2 (graduate level)
- Teaching Assistant, Mar. 2015 - June 2015, Quantum mechanics 1 (graduate level)
- Teaching Assistant, Sept. 2014 - Dec. 2014, General physics 2 (undergraduate level)
- Teaching Assistant, Mar. 2014 - June 2014, General Physics 1 (undergraduate level)
Publications
2019
- W.H. Han, S. Kim, I.-H. Lee, and K.J. Chang, “A Metal-Insulator Transition via Wigner Crystallization in Boron Triangular Kagome Lattice” arXiv (2019)
- W.H. Han and K.J. Chang, “Quantum Spin Hall-like Phononic States in van der Waals Bilayers with Antiferromagnetic Ordering”, arXiv (2019)
- G.-M. Kim, H.-J. Sung, W.H. Han, I.-H. Lee, and K.J. Chang, “Self-Encapsulation of Silicene in Cubic Diamond Si: Topological Semimetal in Covalent Bonding Networks” J.Phys.Chem.C 123, 1839 (2019)
- M. Kim, J. Kim, I.-H Lee, W.H.Han, Y.C. Park, W.Y. Kim, B. Kim, and J. Suh “Quantum transport properties of single-crystalline Ag2Se0.5Te0.5 nanowire as a new topological material”, Nanoscale (2019)
- T. H. Lee, J. W. Shim, Y. W. Kim, H.-J. Sung, J. S. Goo, W. H. Han, K. J. Chang and T. G. Kim submitted (2019).
2018
- H.-J. Sung, W. H. Han, I.-H. Lee, and K. J. Chang, “Superconducting open-framework allotrope of silicon at ambient pressure”, Phys. Rev. Lett. 120, 157001 (2018)
- J.E. Wang, W.H. Han, K.J. Chang, Y.H. Jung, and D.K. Kim, “New insight into Na intercalation with Li substitution on alkali site and high performance of O3-type layered cathode material for sodium ion batteries” J. Mater. Chem. A 6, 22731 (2018).
2017
- W. H. Han, Y. J. Oh, D.-H. Choe, S. Kim, I.-H. Lee, K. J. Chang, “Three-dimensional buckled honeycomb boron lattice with vacancies as an intermediate phase on the transition pathway from α-B to γ-B.”, NPG Asia Materials 9, e400 (2017).
- S. Kim, W. H. Han, I.-H. Lee, K. J. Chang, “Boron Triangular Kagome Lattice with Half-Metallic Ferromagnetism”, Sci. Rep. 7, 7279 (2017).
- S. Cho, S. H. Kang, H. S. Yu, H. W. Kim, W. Ko, S. W. Hwang, W. H. Han, D.-H. Choe, K. J. Chang, Y. H. Lee, H. Yang, S. W. Kim, “Te vacancy-driven superconductivity in orthorhombic molybdenum ditelluride.”, 2D Mater. 4, 021030 (2017).
- W. H. Han, S. Kim, I.-H. Lee, K. J. Chang, Prediction of Green Phosphorus with Tunable Direct Band Gap and High Mobility”“, J. Phys. Chem. Lett. 8, 4627 (2017).
2016
- W. H. Han and K, J. Chang, “Subgap States near the Conduction-Band Edge Due to Undercoordinated Cations in Amorphous In-Ga-Zn-O and Zn-Sn-O Semiconductors”, Phys. Rev. Applied 6, 044011 (2016).
2015
- W. H. Han, Young Jun Oh, Ji-Sang Park, and K. J. Chang, “Electronic Structure of Oxygen Interstitial Defects in Amorphous In-Ga-Zn-O Semiconductors and Implications for Device Behavior”, Phys. Rev. Applied. 3, 044008. (2015).