Jeong Research Group
The Wm Michael Barnes '64 Department of Industrial and Systems Engineering
Texas A&M University
College Station, TX 77843, USA
Jihoon Jeong, Ph.D.
Jihoon Jeong is an assistant professor in the Wm Michael Barnes '64 Department of Industrial and Systems Engineering at Texas A&M University. He is interested in understanding advanced manufacturing processes and enabling process control, via novel metrology such as laser spectroscopy and imaging techniques. He is now a postdoctoral scholar at Northwestern University. We are looking for highly motivated researchers, including graduate students (Fall 2024, Spring 2025, Fall 2025), postdoctoral scholars (2024-2025), and visiting scholars in broad areas of industrial engineering (advanced manufacturing and data science), mechanical engineering (thermal science, advanced manufacturing, and design), physics (optics & spectroscopy), and materials science (metals and characterization). Please send your CV and statements to Jihoon (jihoonjeong AT tamu DOT edu).
Professional Experiences [TAMU profile] [LinkedIn]
Assistant Professor, Wm Michael Barnes '64 Department of Industrial and Systems Engineering, Texas A&M University, Jan 2024 -
Postdoctoral Scholar, Department of Mechanical Engineering, Northwestern University, Jan 2021 - Dec 2023
Research Scientist, Fuel Cell Research Center, KIST (Korea Institute of Science and Technology), Mar 2013 - Jul 2014
Research Engineer, Battery Business Division, Samsung SDI, Feb 2011 - Feb 2013
Education
Ph.D. in Mechanical Engineering, The University of Texas at Austin, 2020
M.S. in Mechanical Engineering, KAIST, 2011
B.S. in Mechanical Engineering, KAIST, 2009
Openings
Ph.D. students
Applicants must be enrolled in the Ph.D. program in Industrial and Systems Engineering at Texas A&M University.
Admitted students who are interested in joining the lab should directly contact Jihoon.
Applying to any sources of scholarships available to you is highly encouraged.
Postdoctoral Scholars
To apply, send Jihoon a CV, a one-page research statement, and the contact information of 3 referees.
Undergraduate and M.S. students
Applicants must be enrolled in a program at Texas A&M University.
To apply, submit a CV and a one-page personal statement.
Research
Mission
Understand processes including manufacturing and energy transport via utilizing advanced in-situ monitoring technologies
Research topics
Developing in-situ process monitoring technologies using novel pyrometry, spectroscopy, and imaging techniques
Sensing defect and residual stress using laser spectroscopy
New AM process development for tailoring microstructure and mechanical properties
Nano-/micro-scale AM process development for semiconductor
Research projects
Process monitoring and closed-loop control in directed energy deposition (DED) - ARL @NU
Design and construction of a High Throughput Oxidation Screening Test (HOST) - GE & ARL @NU
Refractory metal AM process development - arpa-e, DOE & QuesTek @NU
High-speed X-ray imaging study of DED - CHiMaD, NIST @NU
Development of Multi-Material Printing and Multi-Modal Sensing Capabilities for Directed Energy Deposition - NSF @NU
Hydrodynamic thermal transport in graphitic materials - NSF @UT Austin
Picosecond transient thermoreflectance technique - NASCENT, NSF @UT Austin
Metal-supported Solid Oxide Fuel Cell using Diesel Reformate - Saudi Aramco @KAIST
Publications
[Google Scholar] (*: lead authors, #: corresponding authors)
Directed energy deposition processed refractory metal using a blue laser
R. Zha, J. Jeong, J. Males, J. Cao
Submitted to ####In-situ melt pool measurement in directed energy deposition using hyperspectral imaging and photodiode array
J. Jeong, R. Zha, A. Tong, P. Guo, J. Cao
Submitted to ####Closed-loop Control of Melt Pool Temperature in Directed Energy Deposition (DED) using on-Axis Photodiode-Based Planck Thermometry
S. Webster*, J. Jeong*, J-E. Mogonye, J. Zuback, S. Liao, J. Rocher, K. Ehmann, J. Cao
Submitted to Additive ManufacturingIn-situ, Parallel Monitoring of Relative Temperature, Material Emission, and Laser Reflection in Powder-Blown Directed-Energy Deposition
S. Webster, J. Jeong, R. Zha, S. Liao, A. Castro, L. Jacquemetton, D. Beckett, K. Ehmann, J. Cao
Submitted to JOMAdvanced Understanding of Hydrogen Embrittlement Relaxation of Stainless Steel
S.-W. Baek#, J. H. Kim, E. J. Song, J. Jeong#
Submitted to Nature CommunicationA Comprehensive Transfer and Repair Method for micro-LED chip using Blister-actuated Laser Induced Forward Transfer
J. Lim*, J. Jeong*, S. Kang, S. Han, A.-Y. Park, J.-H. Lee, J.-Y. Song, S. Kim, S. Han
Submitted to Nature CommunicationEffects of Laser-Powder Alignment on Clad Dimensions and Melt Pool Temperature in Directed Energy Deposition
J. Jeong*, S. Webster*, R. Zha, J.-E. Mogonye, K. Ehmann, J. Cao
Journal of Manufacturing Science and Engineering, 146(1), 011007 (2024) [Link]Machine-Agnostic Energy Density Model for Laser, Powder-blown Directed Energy Deposition
S. Webster, J. Jeong, S. Liao, J. Cao
Journal of Manufacturing Processes, 100, 11 (2023) [Link]Simulation-guided feedforward-feedback control of melt pool temperature in directed energy deposition
S. Liao*, J. Jeong*, R. Zha, T. Xue, J. Cao
CIRP Annals Manufacturing Technology, 72, 157 (2023) [Link]Thermal Properties of Copper Nanoparticles at Different Sintering Stages Governed by Nanoscale Heat Transfer
J. Jeong, Y. Wang
Additive Manufacturing Letters, 4, 100114 (2023) [Link]Cooling Rate Measurement in Directed Energy Deposition using Photodiode-based Planck Thermometry
J. Jeong, S. Webster, S. Liao, J.-E. Mogonye, K. Ehmann, J. Cao
Additive Manufacturing Letters, 3, 100101 (2022), [Link]Differentiable Simulation for Material Thermal Response Design in Additive Manufacturing Processes
M. Mozaffar, S. Liao, J. Jeong, T. Xue, J. Cao
Additive Manufacturing, 61, 103337 (2023) [Link]Hybrid full-field thermal characterization of additive manufacturing processes using physics-informed neural network with data
S. Liao, T. Xue, J. Jeong, S. Webster, K. Ehmann, J. Cao
Computational Mechanics, accepted [Link]Cavitation Bubble Removal by Surfactants in Laser-Induced Plasma Micromachining
S. Bhandari, P. Kang, J. Jeong, J. Cao, K. Ehmann
Manufacturing Letters, 32, 96 (2022) [Link]Transient hydrodynamic lattice cooling by picosecond laser irradiation of graphite
J. Jeong*, X. Li*, S. Lee, L. Shi, Y. Wang
Physical Review Letters, 127(8), 085901 (2021) [Link]Moiré Patterns in 2D Materials-a Review
F. He, Y. Zhou, Z. Ye, S.-H. Cho, J. Jeong, X. Meng, Y. Wang
ACS Nano, 15 (4), 5944 (2021) [Link]Thermal conductivity enhancement in MoS2 under extreme strain
X. Meng, T. Pandey, J. Jeong, S. Fu, J. Yang, K. Chen, A. Singh, F. He, X. Xu, J. Zhou, W.-P. Hsieh, A. K. Singh, J.-F. Lin, Y. Wang
Physical Review Letters, 122, 155901 (2019) [Link]Picosecond Transient Thermoreflectance for Thermal Conductivity Characterization
J. Jeong, X. Meng, A. K. Rockwell, S. R. Bank, W.-P. Hsieh, J.-f. Lin, Y. Wang
Nanoscale and Microscale Thermophysical Engineering, 23, 211 (2019) [Link]In-plane Thermal Conductivity Measurement with Nanosecond Grating Imaging Technique
J. Jeong, K. Chen, E. S. Walker, N. Roy, F. He, P. Liu, C. G. Willson, M. Cullinan, S. R. Bank, Y. Wang
Nanoscale and Microscale Thermophysical Engineering, 22, 83 (2018) (Front cover featured) [Link]A comprehensive study of the sintering of copper nanoparticles using femtosecond, nanosecond and continuous wave lasers
N. K. Roy, O. G. Dibua, W. Jou, F. He, J. Jeong, Y. Wang, M. Cullinan
Journal of Micro and Nano-Manufacturing, 6, 010903 (2018) [Link]Comparison between grating imaging and transient grating techniques on measuring carrier diffusion in semiconductor
K. Chen, X. Meng, F. He, Y. Zhou, J. Jeong, N. Sheehan, S. R. Bank, Y. Wang
Nanoscale and Microscale Thermophysical Engineering, 22, 348 (2018) [Link]Structural and electrochemical properties of interconnect integrated solid oxide fuel cell
S.-W. Baek, J. Jeong, W. S. Choi, J. H. Kim
Materials Research Bulletin, 82, 126 (2016) [Link]X-ray photoelectron spectroscopic study of direct reforming catalysts Ln0.5Sr0.5Ti0.5Mn0.5O3±d (Ln= La, Nd, and Sm) for high temperature-operating solid oxide fuel cell
K. Kim, J. Jeong, B. Kim, S. B. Jin, J. H. Kim
Applied Surface Science, 365, 38 (2016) [Link]Metal-supported SOFC with an aerosol deposited in-situ LSM and 8YSZ composite cathode
S.-W. Baek, J. Jeong, H. Schlegl, A. K. Azad, D. S. Park, U. B. Baek, J. H. Kim
Ceramics International, 42, 2402 (2016) [Link]Structural, thermal and electrical conductivity characteristics of Ln0.5Sr0.5Ti0.5Mn0.5O3±d (Ln: La, Nd and Sm) complex perovskites as anode materials for solid oxide fuel cell
J. Jeong, A. K. Azad, H. Schlegl, B. Kim, S.-W. Baek, K. Kim, H. Kang, J. H. Kim
Journal of Solid State Chemistry, 226, 154 (2015) [Link]A Diesel-driven, Metal-Based Solid Oxide Fuel Cell
J. Jeong, S.-W. Baek, J. Bae
Journal of Power Sources, 250, 98 (2014) [Link]Enhanced Oxygen Storage Capacity of Ce0.65Hf0.25M0.1O2-δ (M = Rare Earth Elements): Applications to Methane Steam Reforming with High Coking Resistance
D. Harshini, D. H. Lee, J. Jeong, Y. Kim, S. W. Nam, H. C. Ham, J. H. Han, T.-H. Lim, C. W. Yoon
Applied Catalysis B: Environmental, 148-149, 415 (2014) [Link]Metal-supported solid oxide fuel cells with barium-containing in-situ cathodes
S.-W. Baek, J. Jeong, Y. Kim, J. H. Kim, S. Shin, J. Bae
Solid State Ionics, 192, 387 (2011) [Link]Interconnect-integrated solid oxide fuel cell with high temperature sinter-joining process
S.-W. Baek, J. Jeong, J. H. Kim, C. Lee, J. Bae
International Journal of Hydrogen Energy, 35, 11878 (2010) [Link]Performance of SOFC coupled with n-C4H10 autothermal reformer: Carbon deposition and development of anode structure
G. Bae, J. Bae, P. Kim-Lohsoontom, J. Jeong
International Journal of Hydrogen Energy, 35, 12346 (2010) [Link]