Junsoo Park

NASA Ames Research Center (KBR, Inc.)

Research Interests

First principles

Electron Transport

Lattice Dynamics

Thermoelectrics

Shape-memory Alloys

Atomic and Molecular Physics, and Optics

Electronic, Optical and Magnetic Materials

Electrical and Electronic Engineering

Process Chemistry and Technology

Mechanics of Materials

Modeling and Simulation

Computer Science Applications

Renewable Energy, Sustainability and the Environment

Biomedical Engineering

About

I do first-principles computational research in materials science, that is, I adopt fundamental theories of physics at the atomistic scale to the computer to calculate and predict material properties. My interests include electron and thermal transport, lattice dynamics, and phase transitions. I have studied thermoelectrics, battery materials and interfaces, and shape-memory alloys, both independently and in collaboration with experimentalists.

Publications

Efficient calculation of carrier scattering rates from first principles

Nature Communications / Apr 13, 2021

Ganose, A. M., Park, J., Faghaninia, A., Woods-Robinson, R., Persson, K. A., & Jain, A. (2021). Efficient calculation of carrier scattering rates from first principles. Nature Communications, 12(1). https://doi.org/10.1038/s41467-021-22440-5

Titanium Dioxide Whispering Gallery Microcavities

Advanced Optical Materials / Jun 24, 2014

Park, J., Ozdemir, S. K., Monifi, F., Chadha, T., Huang, S. H., Biswas, P., & Yang, L. (2014). Titanium Dioxide Whispering Gallery Microcavities. Advanced Optical Materials, 2(8), 711–717. Portico. https://doi.org/10.1002/adom.201400107

High Thermoelectric Power Factor and Efficiency from a Highly Dispersive Band in Ba2BiAu

Physical Review Applied / Jan 29, 2019

Park, J., Xia, Y., & Ozoliņš, V. (2019). High Thermoelectric Power Factor and Efficiency from a Highly Dispersive Band in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:msub><mml:mi>Ba</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mi>Bi</mml:mi><mml:mi>Au</mml:mi></mml:math>. Physical Review Applied, 11(1). https://doi.org/10.1103/physrevapplied.11.014058

When band convergence is not beneficial for thermoelectrics

Nature Communications / Jun 08, 2021

Park, J., Dylla, M., Xia, Y., Wood, M., Snyder, G. J., & Jain, A. (2021). When band convergence is not beneficial for thermoelectrics. Nature Communications, 12(1). https://doi.org/10.1038/s41467-021-23839-w

Compromise between band structure and phonon scattering in efficient n-Mg3Sb2-Bi thermoelectrics

Materials Today Physics / May 01, 2021

Shi, X., Zhang, X., Ganose, A., Park, J., Sun, C., Chen, Z., Lin, S., Li, W., Jain, A., & Pei, Y. (2021). Compromise between band structure and phonon scattering in efficient n-Mg3Sb2-Bi thermoelectrics. Materials Today Physics, 18, 100362. https://doi.org/10.1016/j.mtphys.2021.100362

Wafer-Scale Black Arsenic–Phosphorus Thin-Film Synthesis Validated with Density Functional Perturbation Theory Predictions

ACS Applied Nano Materials / Aug 22, 2018

Young, E. P., Park, J., Bai, T., Choi, C., DeBlock, R. H., Lange, M., Poust, S., Tice, J., Cheung, C., Dunn, B. S., Goorsky, M. S., Ozolinš, V., Streit, D. C., & Gambin, V. (2018). Wafer-Scale Black Arsenic–Phosphorus Thin-Film Synthesis Validated with Density Functional Perturbation Theory Predictions. ACS Applied Nano Materials, 1(9), 4737–4745. https://doi.org/10.1021/acsanm.8b00951

How to analyse a density of states

Materials Today Electronics / May 01, 2022

Toriyama, M. Y., Ganose, A. M., Dylla, M., Anand, S., Park, J., Brod, M. K., Munro, J. M., Persson, K. A., Jain, A., & Snyder, G. J. (2022). How to analyse a density of states. Materials Today Electronics, 1, 100002. https://doi.org/10.1016/j.mtelec.2022.100002

Experimental validation of high thermoelectric performance in RECuZnP₂ predicted by high-throughput DFT calculations

Materials Horizons / Jan 01, 2021

Pöhls, J.-H., Chanakian, S., Park, J., Ganose, A. M., Dunn, A., Friesen, N., Bhattacharya, A., Hogan, B., Bux, S., Jain, A., Mar, A., & Zevalkink, A. (2021). Experimental validation of high thermoelectric performance in RECuZnP2 predicted by high-throughput DFT calculations. Materials Horizons, 8(1), 209–215. https://doi.org/10.1039/d0mh01112f

High Thermoelectric Power Factor in IntermetallicCoSiArising from Energy Filtering of Electrons by Phonon Scattering

Physical Review Applied / Feb 07, 2019

Xia, Y., Park, J., Zhou, F., & Ozoliņš, V. (2019). High Thermoelectric Power Factor in Intermetallic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mi>Co</mml:mi><mml:mi>Si</mml:mi></mml:math>Arising from Energy Filtering of Electrons by Phonon Scattering. Physical Review Applied, 11(2). https://doi.org/10.1103/physrevapplied.11.024017

Optimal band structure for thermoelectrics with realistic scattering and bands

npj Computational Materials / Mar 25, 2021

Park, J., Xia, Y., Ozoliņš, V., & Jain, A. (2021). Optimal band structure for thermoelectrics with realistic scattering and bands. Npj Computational Materials, 7(1). https://doi.org/10.1038/s41524-021-00512-w

First-principles assessment of thermoelectric properties of CuFeS2

Journal of Applied Physics / Mar 22, 2019

Park, J., Xia, Y., & Ozoliņš, V. (2019). First-principles assessment of thermoelectric properties of CuFeS2. Journal of Applied Physics, 125(12). https://doi.org/10.1063/1.5088165

High Thermoelectric Performance and Defect Energetics of Multipocketed Full Heusler Compounds

Physical Review Applied / Aug 21, 2020

Park, J., Xia, Y., Ganose, A. M., Jain, A., & Ozoliņš, V. (2020). High Thermoelectric Performance and Defect Energetics of Multipocketed Full Heusler Compounds. Physical Review Applied, 14(2). https://doi.org/10.1103/physrevapplied.14.024064

Exceptionally high electronic mobility in defect-rich Eu₂ZnSb_2−xBi_x alloys

Journal of Materials Chemistry A / Jan 01, 2020

Chanakian, S., Uhl, D., Neff, D., Drymiotis, F., Park, J., Petkov, V., Zevalkink, A., & Bux, S. (2020). Exceptionally high electronic mobility in defect-rich Eu2ZnSb2−xBix alloys. Journal of Materials Chemistry A, 8(12), 6004–6012. https://doi.org/10.1039/c9ta14170g

Leveraging electron-phonon interaction to enhance the thermoelectric power factor in graphene-like semimetals

Physical Review B / Nov 01, 2019

Xia, Y., Park, J., Ozoliņš, V., & Wolverton, C. (2019). Leveraging electron-phonon interaction to enhance the thermoelectric power factor in graphene-like semimetals. Physical Review B, 100(20). https://doi.org/10.1103/physrevb.100.201401

The first historical account of Vietnam mathematics on arXiv

Apr 24, 2022

Phenikaa, I. (2022). The first historical account of Vietnam mathematics on arXiv. https://doi.org/10.31219/osf.io/mv76r

Globally optimal band structure for thermoelectrics in realistic systems

Physical Review B / Dec 05, 2022

Park, J. (2022). Globally optimal band structure for thermoelectrics in realistic systems. Physical Review B, 106(23). https://doi.org/10.1103/physrevb.106.235105

Mixed-Domain Charge Transport in the S–Se System from First-Principles

ACS Materials Letters / Nov 16, 2022

Park, J., Wu, Z., & Lawson, J. W. (2022). Mixed-Domain Charge Transport in the S–Se System from First-Principles. ACS Materials Letters, 4(12), 2579–2589. https://doi.org/10.1021/acsmaterialslett.2c00660

Education

University of California Los Angeles

Ph.D., Materials Science and Engineering / January, 2019

Los Angeles, California, United States of America

Washington University in Saint Louis

B.S., Energy, Environmental, and Chemical Engineering / May, 2014

Saint Louis, Missouri, United States of America

Experience

NASA Ames Research Center (KBR Inc.)

Postdoctoral Researcher (Technical Professional - Physics) / June, 2021 — August, 2023

Physicist II (Technical Professional - Physics) / September, 2023 — Present

Lawrence Berkeley National Laboratory

Postdoctoral Scholar / February, 2019 — June, 2021

University of California Los Angeles

Ph.D. Researcher / October, 2014 — January, 2019

Yale University

Visiting Assistant in Research / August, 2017 — July, 2018

Links & Social Media

Research Web Site

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