Research Papers

[Under review & Revision]

1. Bio-Circular Yet Hyper-Durable Soft Electronic Fingers

2. Porous-Architectured Composite for Fully 3D-Printed Biodegradable Soft Electronics
   
   

2025

1. A review of the thermo-mechanical analysis framework for microelectronics packaging: Mechanics, material property determination, and structural consideration
   J.-H. Park, E. Lee, I.-D. Kim, H. Jung, J. Kim, J. Cho, J.-h. Kim, T.-I. Lee, S.-K. Kang, E.-H. Lee
   Materials Science in Semiconductor Processing, Accepted

2. Indentation-based mechanical characterization of hydrogen-charged S45C (uniform corrosion) and STS316L (pitting corrosion) steels
   Im-Deok Kim, Jun-Seok Shim, Woo-jin Lee, Ju-Bean Ham, Sang Yoon Song, Hyun Jung, Edyta Wyszkowska, Dong-Hyun Lee, Young-Cheon Kim, Seok Su Sohn, Jong-hyoung Kim*, Seung-Kyun Kang*
   Metals and Material International, Accepted

3. Dissolution study of biodegradable Magnesium Silicide thin films for transient electronic applications
   Ji-Woo Gu, Jun-Seok Shim, Minjung Chae, Yoonseong Jung, Su-Min Kim, Young-In Ryu, Jae-Hwan Lee, Sung-Woo Kim, Tae-Woo Lee, Edyta Wyszkowska, Jungho Shin, Hyejin Jang, Ju-Young Kim, Myoung-Ryul Ok, Jong-hyoung Kim*, Jae-Young Bae*, Seung-Kyun Kang*
   Advanced Science (Impact Factor = 14.1), Accepted [site]

4. Photophoretic flight of perforated structures in near-space conditions
   Benjamin C. Schafer*, Jong-hyoung Kim (co-1st author), Felix Sharipov, Gyeong-Seok Hwang, Joost J. Vlassak*, David W. Keith
   Nature (Impact Factor = 48.5), 644, 362-369 (2025) [site]
   https://seas.harvard.edu/news/2025/08/new-window-earths-upper-atmosphere 

5. A review on evaluation of elastic modulus using nanoindentation (Best Paper Award)
   Seo Hyeon Jang, Oh Min Kwon, Si Hyun Park, Hyun Wook Cho, Jong-hyoung Kim*
   J. Korean Inst. Electr. Electron. Mater. Eng., Volume 38, No. 3, pp. 247-253 (2025) [site]

6. Evaluation of non-equi-biaxial residual stresses from the surface displacements around a single indentation (Featured on Cover)
   Jong-hyoung Kim*, Kyungyul Lee, Dongil Kwon, Gary S. Schajer*
   Metlas and Materials International, Volume 31, 2919-2930 (2025) [site]

2024

1. Hypersensitive meta-crack strain sensor for real-time biomedical monitoring
   Jae-Hwan Lee, Yoon-Nam Kim, Junsang Lee, Jooik Jeon, Jae-Young Bae, Ju-Yong Lee, Kyung-Sub Kim, Minseong Chae, Hyunjun Park, Jong-hyoung Kim, Kang-Sik Lee, Jeonghyun Kim, Jung Keun Hyun*, Daeshik Kang*, Seung-Kyun Kang*
   Science Advances, Volume 10, Issue 51 (2024)  [site]

2. Elastic modulus prediction from indentation using machine learning: considering tip geometric imperfection
   Jong-hyoung Kim, Dong-Yeob Kim, Junsang Lee, Soon Woo Kwon, Jongheon Kim, Sungeun Hong, Seung-Kyun Kang, Young-Cheon Kim*
   Metals and Materials International, Volume 30, 2440-2449 (2024)  [site] [pdf]

3. A machine learning perspective on the inverse indentation problem: uniqueness, surrogate modeling, and learning elasto-plastic properties from pile-up
   Quan Jiao, Yongchao Chen, Jong-hyoung Kim, Chang-Fu Han, Chia-Hua Chang, Joost J. Vlassak*
   Journal of the Mechanics and Physics of Solids, Volume 185, 105557 (2024)  [site] [pdf]

4. Equivalent-Volume Model: Estimating Contact Morphology of Spherical Indentation for Metallic Materials
   Jong-hyoung Kim, Oh Min Kwon, Junsang Lee, Hae-Jin Son, Young-Cheon Kim*, Seung-Kyun Kang*
   Metals and Materials International, Volume 30(3), 714-725 (2024)  [site] [pdf]

2023

1. Stress-corrosion cracking of polypropylene in harsh oxidizing environments
   Jong-hyoung Kim, Won-Seok Song, Quan Jiao, Joost J. Vlassak*
   Extreme Mechanics Letters, Volume 64, 102080 (2023)   [site] [pdf]

2. Evaluation of anisotropy of yield stress using surface in-plane displacements around an indentation residual imprint
   Junsang Lee, Oh Min Kwon, Kyungyul Lee, Kyung Il Kim, Soo-Hyun Kim, Young-Cheon Kim, Dongil Kwon, Jong-hyoung Kim*, Seung-Kyun Kang*
   Materials Science and Engineering: A (Field top 10% by JCR), Volume 879, 145220 (2023)   [site] [pdf]

3. Ultralight and ultra-stiff nano-cardboard panels: mechanical analysis, characterization, and design principles
   Jong-hyoung Kim, Lishuai Jin, Benjamin C. Schafer, Quan Jiao, Katia Bertoldi, David W. Keith, Joost J. Vlassak*
   Acta Materialia (Field top 5% by JCR), Volume 248, 118782 (2023)   [site] [pdf] 

2022

1. Analytical models for the design of photophoretically levitating macroscopic sensors in the stratosphere
   Benjamin C. Schafer*, Jong-hyoung Kim, Joost J. Vlassak, David W. Keith
   ArXiv:2209.08093 (2022)   [site] 

2021

1. Effect of post-weld heat treatment conditions on mechanical properties, microstructures and nonductile fracture behavior of SA508 Gr.1a thick weldments
   Junsang Lee, Jong Sung Kim*, Bongsang Lee, Sungwoo Cho, Dongil Kwon, Jong-hyoung Kim*
   Metals and Materials International, 27, 4700-4709 (2021)   [site] [pdf] 

2. Compressive properties of nanoporous gold through nanoindentation: An analytical approach based on the expanding cavity model
   Oh Min Kwon, Jiyeon Kim, Jinwoo Lee, Jong-hyoung Kim, Hee-Jun Ahn, Ju-Young Kim, Yong-Cheon Kim*, Dongil Kwon
   Metals and Materials International, 27, 3787-3795 (2021)   [site] [pdf] 

2020

1. A further study on Knoop indentation plastic deformation for evaluating residual stress
   Woojoo Kim, Kyungyul Lee, Jong-hyoung Kim, Young-Cheon Kim*, Dongil Kwon
   Korean Journal of Metals and Materials, 58(8), 515-521 (2020)   [site] 

2. A finite element simulation for induction heat treatment of automotive drive shaft
   Siwook Park, Dong-Wan Kim, Jong-hyoung Kim, Si Yup Lee, Dongil Kwon, Heung Nam Han*
   ISIJ International, Volume 60, Issue 6, 1333-1341 (2020)   [site] 

2019

1. Effect of the surface contact on the uncertainty in indentation yield strength: Surface roughness and angular misalignment
   Oh Min Kwon, Jongho Won, Jong-hyoung Kim, Changhyun Cho, Eun-Chae Jeon*, Dongil Kwon
   Metals and Materials International, 25, 1500-1510 (2019)   [site] [pdf] 

2. Characterization of viscoelastic behavior of Poly(dimethylsiloxane) by nanoindentation
   Jong-hyoung Kim, Jinwoo Lee, Woojoo Kim, Jongheon Kim, Seung-Kyun Kang*, Dongil Kwon
   Korean Journal of Metals and Materials, Volume 57(5) 289-294 (2019)   [site] [pdf] 

3. An indentation method for evaluation of residual stress: Estimation of stress-free indentation curve using stress-independent indentation parameters
   Jong-hyoung Kim, Sungki Choi, Junsang Lee, Hee-Jun Ahn, Young-Cheon Kim, Min-Jae Choi*, Dongil Kwon
   Journal of Materials Research, Volume 34, Issue 7, 1103-1111 (2019)   [site] [pdf] 

~2018

1. Determination of directionality of nonequibiaxial residual stress by nanoindentation testing using a modified Berkovich indenter
   Jong-hyoung Kim, Huiwen Xu, Min-Jae Choi, Eunju Heo, Young-Cheon Kim*, Dongil Kwon
   Journal of Materials Research, 33, 3849-3856 (2018)   [site] [pdf] 

2. Directionality of residual stress evaluated by instrumented indentation testing using wedge indenter
   Hee-Jun Ahn, Jong-hyoung Kim, Huiwen Xu, Junsang Lee, Ju-Young Kim, Yong-Cheon Kim*, Dongil Kwon
   Metals and Materials International, 23, 465-472 (2017)   [site] [pdf] 

3. Fracture characteristics of frit bonding through In-situ nano-indentation testing
   Won Je Jo*, Hee-Jun Ahn, Jong-hyoung Kim, Dongil Kwon
   Journal of Materials Science & Technology (Field top 5% by JCR), Volume 32, Issue 11, 1204-1210 (2016)   [site] 

Patents & Standards

• 3D Architectures and Applications for Macroscopic Photophoretically Active Structures, Applied, November 14 2024 (PCT/US2024/055904)

• Photophoretically Levitating Macroscopic Structures, Applied, July 21 2023 (PCT/US2023/070703)

• Yield strength anisotropy evaluation system using indentation test and surface displacement analysis, Granted, April 2023, #10-2521067 (Korean patent)

• Stress ratio and residual stress evaluation system through indentation surface displacement analysis, Granted, May 2021, #10-2257004 (Korean patent)

• ASME BPVC Code Case N-881, "Exempting SA-508 Grade 1A from PWHT Based on Measurement of Residual Stress in Class 1 Application, Section III, Division 1", Project Manager: Walter J. Sperko, ASME Boiler & Pressure Vessel Code, Nuclear Code Case, Supplement 4 (2017)
  https://now.snu.ac.kr/past/21/2/674  [pdf]
  https://www.monthlypeople.com/news/articleView.html?idxno=12601  [pdf]