Latest publications 

All publications
64. Y. J. Choi, J.H. Park, J. Nam, G.-D. Sim, M.-G. Kim, M. Kim, 
Mechanically and Functionally Resilient Piezoelectric Fiber Coils and Knots for Reliable Self-Powered Sensing,
ACS Nano (2026)
63. Y.-E. Lee, H. Ryu, Z. F. Lee, G.-D. Sim, J.-H. Choi,
Mechanical Characterization of Shape Memory Alloy Thin Films Through Membrane Deflection Experiments,
Journal of Materials Research and Technology 41 (2026).
62. K. Y. Xie, D. Yadav, K. Cooper, Y. Lu, J. Howard, M. Hansen, R. R. Chauhan, J.H. Park, S. Lee, Y. Park, A. Phong, G.-D. Sim, Y. Wu, L. Shao, M. J. Demkowicz, 
Abnormal grain growth driven by high-temperature proton irradiation in nanocrystalline Ni,
​Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms (2026) 166009.
61. J. Mun, J.H. Park, J.D. Hong, S. Lam, P. Hosemann, G.-D. Sim#, H. J. Ryu#,
Small-Scale Mechanical Testing of Interfacial Toughness in Cr-Coated Zircaloy-4, 
Journal of Nuclear Materials (2026) 156426.

​# Corresponding authors
60. Z. F. Lee*, T. Kim*, K. Jung, J. Lee​#, G.-D. Sim​#, 
Mechanical characterization of Silicon-on-Nothing structures with nanoindentation and point-load deflection experiments, 
Sensors and Actuators A: Physical (2026) 117312.
​
* Equal contribution
​# Corresponding authors
59. J. Kim, Z. F. Lee, G.-D. Sim, S. Kim, J. S. Jeon, 
Implementation of Drug-Induced Rhabdomyolysis and Acute Kidney Injury in Microphysiological System, 
Advanced Functional Materials (2025) 2513519.
58. Y. B. Jeon, G.-D. Sim, J.-H. Choi, 
Finite Element Buckling Analysis for Micro Structures based on the Couple Stress Theory,
Thin-Walled Structures (2026) 114023.
57. D. Kim, Y. Kang, H. Kim, S. Oh, S. Jang, M. Lee, Z. F. Lee, G.-D. Sim, K. T. Lee,
Sub-1000 °C Sintering of Protonic Ceramic Electrochemical Cells via Microwave-Driven Vapor Phase Diffusion,
Advanced Materials (2025) 2506905.
56. J.-H. Choi, B.-C. Lee, G.-D. Sim, 
Discrete Least Square Method for Nonmatching Mesh Problems, 
Mathematics and Computers in Simulation 239 (2026).
55. J.-S. Bae*, K.-H. Lim*, S. Chandra, X. Tan#, G.-D. Sim#,
​Exploring the High-Temperature Tensile Behavior of Additively Manufactured 316L Stainless Steel with Fine Equiaxed Grains, 
Journal of Materials Research and Technology 36 (2025).
​
* Equal contribution
​# Corresponding authors
54. J.-S. Bae*, E. Tekoglu*, M. Alrizqi, A. D. O'Brien, J. Liu, K. Biggs, S. Y. Kim, A. Penn, I. Sulak, W. Chen, K. P. So, A. J. Hart, G.-D. Sim#, J. Li#,
​Additive manufacturing of strong and ductile In939+TiB2 by Laser Powder Bed Fusion,
​Materials Science and Engineering: A (2025) 148446.

* Equal contribution
​# Corresponding authors
53. T. D. Doležal#, E. Tekoglu, J.-S. Bae, G.-D. Sim, R. Freitas#, J. Li#, 
Atomistic simulations of short-range ordering with light interstitials in Inconel superalloys, 
Computational Materials Science 253 (2025) 113858. 

​# Corresponding authors
52. S. Choi & G.-D. Sim, 
The role of creep deformation on the fatigue behavior of evaporated gold thin films,
​Journal of Mechanical Science and Technology 39 (4) (2025).
51. J.-H. Choi*, H. Ryu*, J.-Y. Kim, K.-H. Lim, G.-D. Sim, 
Strain Gradient-induced Size Effect of Nickel-Titanium Shape Memory Alloys,
International Journal of Plasticity (2025) 104309.

​​* Equal contribution
50. J. Kim, I. U Kim, Z. F. Lee, J. Han, J. Ahn, Y. Jo, P. Kim, H. Yoo, G.-D. Sim,  J. S. Jeon,
Detrimental Effects of Advanced Glycation End-products (AGEs) on a 3D Skeletal Muscle Model in Microphysiological System, 
Biosensors and Bioelectronics (2025) 117316. 

49. K.-H. Lim*, J.-S. Bae*, S. Chandra, K.H. Ryou, P.-P. Choi, X. Tan, G.-D. Sim,
Exceptional Creep Resistance of Additively Manufactured 316L Stainless Steel via Unprecedented Early Laves Phase Formation,
​Materials Science and Engineering: A (2025) 148006.

​* Equal contribution
48. J.-H. Choi*, H. W. Lee*, Y. J. Hwang, Y. Park, K.-H. Lim, S. G. Jung#, G.-D. Sim#,
Mechanical evaluation of linking methods for septal extension grafts, 
Journal of Mechanical Science and Technology 39 (1) (2025).

* Equal contribution
# Corresponding authors
47. J. Kim*, I. U. Kim*, Z. F. Lee, G.-D. Sim, J. S. Jeon, 
Strategic Approaches in Generation of Robust Microphysiological 3D Musculoskeletal Tissue System,
Advanced Functional Materials (2024) 2410872.

* Equal contribution
46. E. Tekoğlu*, J.-S. Bae*, H.-A. Kim*, K.-H. Lim, J. Liu, T. D. Doležal, S. Y. Kim, M. A. Alrizqi, A. Penn, W. Chen, A. J. Hart, J.-H. Kang, C.-S. Oh, J. Park, F. Sun, S. Kim#, G.-D. Sim#, J. Li#,
Superior high-temperature mechanical properties and microstructural features of LPBF-printed In625-based metal matrix composites, 
Materials Today 80 (2024) 297-307.
​
* Equal contribution
# Corresponding authors
45. Y. Park, S. Choi, K.H. Ryou, J.H Park, W. S. Choi, W.-S. Ko, P.-P. Choi, G.-D. Sim,
Effect of compositional undulation on the mechanical behavior of atomic-scale planar-faulted Ni-Mo-W films, 
​Materials Science and Engineering: A (2024) 147250.
44. J.-Y. Kim, A. Rehman, H. Ryu, I. Oh, G.-D. Sim,
Sputter-deposited Ni-rich NiTi thin films: Mechanical behavior and composition sensitivity, 
​Materials Science and Engineering: A (2024) 146960.
43. J.H. Park, Y. Park, S. Choi, Z. F. Lee, G.-D. Sim,
Fatigue behavior of freestanding nickel-molybdenum-tungsten thin films with high-density planar faults,
​Nanoscale (2024).
42. H. Ryu, Z. F. Lee, J.-Y. Kim, S. Choi, G.-D. Sim,
Cyclic stability in NiTi and NiTiCu thin films: Role of precipitates in low- and high-cycle regimes,
Scripta Materialia (2024) 116189.
41. K.H. Ryou, S.-H. Lim, K.-H. Lim, S. H., G.-D. Sim, S. Nambu, P.-P. Choi,
Fabrication of architecturally designed steel for improving isotropy of mechanical properties using directed energy deposition,
Additive Manufacturing (2024) 104128.
40. J.-H. Ha, J. Ko, J. Ahn, Y.Jeong, J. Ahn, S. Hwang, S. Jeon, D. Kim, S. A Park, J. Gu, J. Choi, H. Han, C. Han, B. Kang, B.-H. Kang, S. Cho, Y. J. Kwon, C. Kim, S. Choi, G.-D. Sim, J.-H. Jeong, I. Park,
Nanotransfer Printing of Functional Nanomaterials on Electrospun Fibers for Wearable Healthcare Applications,
Advanced Functional Materials (2024) 2401404.
39. J.-H. Choi, H. Ryu, G.-D. Sim,
Elastic Size Effect of Single Crystal Copper Beams under Combined Loading of Torsion and Bending,
Thin-Walled Structures (2024) 111602.
38. Z. F. Lee, H. Ryu, J.-Y. Kim, H. Kim, J.-H. Choi, I. Oh, G.-D. Sim,
High-throughput membrane deflection characterization of shape memory alloy thin films,
Materials Science and Engineering: A (2024) 146028.
37. E. Tekoğlu*, A.D. O'Brien*, J. S. Bae*, K. H. Lim, J. Liu, S. Kavak, Y. Zhang, S. Y. Kim, D. Ağaoğulları, W. Chen, A. J. Hart, G.-D. Sim#, & J. Li#,
Metal matrix composite with superior ductility at 800° C: 3D printed In718+ ZrB2 by laser powder bed fusion,
Composites Part B: Engineering (2024) 111052.
* Equal contribution
# Corresponding authors
36. J.-H. Choi, H. Ryu, K.-H. Lim, J.-Y. Kim, H. Kim, G.-D. Sim, 
Effect of Strain Gradient on Elastic and Plastic Size Dependency in Polycrystalline Copper,
International Journal of Plasticity (2023) 103824.
35. J.-H. Choi, B.-C. Lee, G.-D. Sim, 
Mixed finite elements based on superconvergent patch recovery for strain gradient theory,
​Computer Methods in Applied Mechanics and Engineering (2023) 116053.
34. K.-H. Lim*, K. H. Ryou*, J.-H. Choi, G. Choi, W. S. Choi, J.-H. Lee, C.-S. Oh, P.-P. Choi#, G.-D. Sim#,
Effect of titanium nitride inclusions on the mechanical properties of direct laser deposited Inconel 718,
Extreme Mechanics Letters (2023) 102009.
* Equal contribution
# Corresponding authors
33. J.-H. Choi, W. Zaki, G.-D. Sim,
Size-dependent constitutive model for shape memory alloys based on couple stress elastoplasticity,
​Applied Mathematical Modelling (2023).
32. H. Kim*, J.-H. Choi*, Y. Park, S. Choi, G.-D. Sim,
Mechanical characterization of thin films via constant strain rate membrane deflection experiments,
Journal of the Mechanics and Physics of Solids (2023) 105209.
* Equal contribution
31. I. Oh, H. Kim, H. Son, S. Nam, H. Choi, G.-D. Sim,
Combinatorial Experiments for Discovering Al-C Thin Films with High Strength and Ductility,
International Journal of Plasticity (2023) 103515.
30. Kim, K., Park, S., Kim, T., Park, Y., Sim, G.-D., & Lee, D,
Mechanical, Electrical Properties and Microstructures of Combinatorial Ni-Mo-W alloy films,
Journal of Alloys and Compounds (2022) 165808.
29. Ji, S., Shin, J., Yoon, J., Lim, K.H., Sim, G.-D., Lee, Y.S., Kim, D.H., Cho, H., Park, J.,
Three-dimensional Skin-type Triboelectric Nanogenerator for Detection of Two-axis Robotic-arm Collision, 
Nano Energy (2022) 107225.
28. J.-H. Choi, H. Kim, J.-Y. Kim, K.-H. Lim, B.-C. Lee, G.-D. Sim,
Micro-cantilever bending tests for understanding size effect in gradient elasticity,
Materials & Design (2022) 110398.
 27. Q. Jiao, J. Cheng, G.-D. Sim, S. Ghosh, J. A. El-Awady,
Micro-mechanical investigation of the thermo-mechanical properties of micro-architectured tungsten coatings,
Journal of the Mechanics and Physics of Solids (2021) 104326.
 26. J.-H. Choi, B.-C. Lee, G.-D. Sim,
A 10-node tetrahedral element with condensed Lagrange multiplier for the modified couple stress theory,
Computers and Structures 246 (2021) 106476.
25. I. Oh, D. Park, E. Cheong, H. Jo, S. Park, D. You, T. Kim, Y. Park, ​K. Kim, G.-D. Sim, C. Shin, D. Lee,
Anisotropic He-ion irradiation damages in nanocolumnar W thin films,
Extreme Mechanics Letters 41 (2020) 100984.
24. J.-H. Choi, G.-D. Sim, B.-C. Lee, 
​A four-node C0 tetrahedral element based on the node based smoothing technique for the modified couple stress theory,
​Computational Mechanics 65 (2020) 1493-1508.
23. G.K. Cuddalorepatta, G.-D. Sim, H. Li, D. Pantuso, J.J. Vlassak, 
Residual stress–driven test technique for freestanding ultrathin films: Elastic behavior and residual strain,
​Journal of Materials Research 34 (2019) 3474-3482.
22. G.-D. Sim, K.Y. Xie, K.J. Hemker, J.A. El-Awady, 
Effect of temperature on the transition in deformation modes in Mg single crystals,
​Acta Mater 178 (2019) 241-248.
21. Q. Jiao*, G.-D. Sim*, M. Komarasamy, R.S. Mishra, P.K. Liaw, J.A. El-Awady, 
Thermo-mechanical response of single-phase face-centered-cubic AlxCoCrFeNi high-entropy alloy microcrystals,
​Materials Research Letters 6 (2018) 300-306.
* Equal contribution
20. G.-D. Sim, J.A. Krogstad, K.Y. Xie, S. Dasgupta, G.M. Valentino, T.P. Weihs, K.J. Hemker, 
Tailoring the mechanical properties of sputter deposited nanotwinned nickel-molybdenum-tungsten films,
​Acta Mater 144 (2018) 216-225.
19. G.-D. Sim, G. Kim, S. Lavenstein, M.H. Hamza, H. Fan, J.A. El-Awady, 
Anomalous hardening in magnesium driven by a size-dependent transition in deformation modes,
​Acta Mater 144 (2018) 11-20.
18. S. Lavenstein, B. Crawford, G.-D. Sim, P.A. Shade, C. Woodward, J.A. El-Awady, 
High frequency in situ fatigue response of Ni-base superalloy René-N5 microcrystals,
​Acta Mater 144 (2018) 154-163.
​17. Q. Jiao, G.-D. Sim, H. Fan, J.A. El-Awady, 
Micro-mechanical characterization of micro-architectured tungsten coatings,
​Materials Science and Engineering: A 705 (2017) 366-375.
16. G.-D. Sim, J.A. Krogstad, K.M. Reddy, K.Y. Xie, G.M. Valentino, T.P. Weihs, K.J. Hemker, 
Nanotwinned metal MEMS films with unprecedented strength and stability,
​Science Advances 3 (2017).
15. Y.-S. Lee, G.-D. Sim, J.-S. Bae, J.-Y. Kim, S.-B. Lee, 
Tensile and fatigue behavior of polymer supported silver thin films at elevated temperatures,
​Materials Letters 193 (2017) 81-84.
14. Q. An, W.A. Goddard, K.Y. Xie, G.-D. Sim, K.J. Hemker, T. Munhollon, M.F. Toksoy, R.A. Haber, 
Superstrength through Nanotwinning,
​Nano Letters 16 (2016) 7573-7579.
13. G.-D. Sim, Y.S. Choi, D. Lee, K.H. Oh, J.J. Vlassak, 
High tensile strength of sputter-deposited ZrB2 ceramic thin films measured up to 1016 K,
​Acta Mater 113 (2016) 32-40.
12. D. Lee, G.D. Sim, K. Zhao, J.J. Vlassak, 
Kinetic Role of Carbon in Solid-State Synthesis of Zirconium Diboride using Nanolaminates: Nanocalorimetry Experiments and First-Principles Calculations,
​Nano Letters 15 (2015) 8266-8270.
11. G.D. Sim, J.J. Vlassak, 
High-temperature tensile behavior of freestanding Au thin films,
​Scripta Materialia 75 (2014) 34-37.
10. D. Lee, G.D. Sim, K.C. Xiao, J.J. Vlassak, 
Low-Temperature Synthesis of Ultra-High-Temperature Coatings of ZrB2 Using Reactive Multilayers,
​J Phys Chem C 118 (2014) 21192-21198.
9. G.D. Sim, J.H. Park, M.D. Uchic, P.A. Shade, S.B. Lee, J.J. Vlassak, 
An apparatus for performing microtensile tests at elevated temperatures inside a scanning electron microscope,
​Acta Mater 61 (2013) 7500-7510.
8. G.-D. Sim, Y.S. Lee, S.B. Lee, J.J. Vlassak, 
Effects of stretching and cycling on the fatigue behavior of polymer-supported Ag thin films,
​Mat Sci Eng a-Struct 575 (2013) 86-93.
7. D. Lee, G.-D. Sim, K. Xiao, Y. Seok Choi, J.J. Vlassak, 
Scanning AC nanocalorimetry study of Zr/B reactive multilayers,
​J Appl Phys 114 (2013) 
6. S. Kim, S. Won, G.-D. Sim, I. Park, S.B. Lee, 
Tensile characteristics of metal nanoparticle films on flexible polymer substrates for printed electronics applications,
​Nanotechnology 24 (2013) 085701.
5. G.-D. Sim, S. Won, S.B. Lee, 
Tensile and fatigue behaviors of printed Ag thin films on flexible substrates,
​Appl Phys Lett 101 (2012).
4. G.-D. Sim, Y. Hwangbo, H.H. Kim, S.B. Lee, J.J. Vlassak, 
Fatigue of polymer-supported Ag thin films,
​Scripta Materialia 66 (2012) 915-918.
3. C.K. Chung, G.-D. Sim, S.B. Lee, K.W. Paik, 
Effects of Conductive Particles on the Electrical Stability and Reliability of Anisotropic Conductive Film Chip-on-Board Interconnections,
​Ieee T Comp Pack Man 2 (2012) 359-366.
2. G.-D. Sim, S. Won, C.Y. Jin, I. Park, S.B. Lee, J.J. Vlassak, 
Improving the stretchability of as-deposited Ag coatings on poly-ethylene-terephthalate substrates through use of an acrylic primer,
​J Appl Phys 109 (2011).
1. G.-D. Sim, C.K. Chung, K.W. Paik, S.B. Lee, 
Moisture induced interface weakening in ACF package,
​Mat Sci Eng a-Struct 528 (2010) 698-705.