International Journal

M.C. Shin, E. Choi, B.H. Jeong, H.S. Sim, J.H. Park, Influence of Chemical Initiators on the Pyrolysis and Coking Behavior of exo-THDCPD:Experimental Insights and ReaxFF Molecular Dynamics Simulations, Chemical Engineering Journal, 2026, Under reveiw.

A. Alqassier, E. Kim, L. Yun, S.L Hong, H.S. Sim, Multiscale Analysis of Pyrolysis Characteristics in Polymeric Solid Fuels, Proceedings of the Combustion Institute, 2026, In preparation.

J. Seong, J. Choi, H.S. Han, J. Son, E. Choi, H.S. Sim,  D. Park, B.H. Jeong, C.H. Sohn, Effect of triethylamine on ignition delay of its mixtures with an endothermic fuel of exo-THDCPD as an additive, Proceedings of the Combustion Institute, 2026, In preparation.

Z. Otgonbayar, J. Noh, S.L. Hong, H.J. Lee, H. Kim, S. Jekal, J. Kim, M. Sa, J. Kim, H.S. Sim, C.-M. Yoon, Spatial control of silane layer formation on boron nanoparticles via diverse methods for high-energetic nanofuel applications, Colloids and Surfaces A: Physicochemical and Engineering Aspects 728, 138668, 2026. (IJ38, IF5.4)
https://doi.org/10.1016/j.colsurfa.2025.138668 

H.S. Sim, J. Park, L.M. Pickett, J. Manin, L. Zhao, Y. Pei, Experimental and numerical study of ignition and combustion processes of primary reference fuels for advanced compression-ignition applications, Energy Conversion and Management 346, 120361, 2025. (IJ37, IF10.9)
https://doi.org/10.1016/j.enconman.2025.120361 

E. Choi, S.L. Hong, C.-M. Yoon, H.S. Sim, Atomistic insights into catalytic role of platinum-graphene nanostructures in decomposition of high-energy-density fuels, Alexandria Engineering Journal 130, 420–436, 2025. (IJ36, IF6.8)
https://doi.org/10.1016/j.aej.2025.09.007 

H.S. Sim, Eungyo Choi, Sungwook Leo Hong, C.-M. Yoon, “ReaxFF molecular dynamics simulations of high-energy-density fuel combustion catalyzed by Pt-graphene hybrids,” Combustion and Flame 282, 114474, 2025. (IJ35,  IF5.8)
https://doi.org/10.1016/j.combustflame.2025.114474 

Z. Otgonbayar, J. Noh, S. Jekal, M. Sa, J. Kim, H.S. Sim, S.L. Hong, J. Kim, M. Kim, C.-M. Yoon, Titanium nanoparticles on reduced boron nanoparticles for enhanced combustion and propulsion performance in hypersonic fuel systems, ACS Applied Nano Materials 8, 16476–16489, 2025. (IJ34, IF5.5)
https://doi.org/10.1021/acsanm.5c02820

Md. Bokhtiar Hossen, Hyung Sub Sim, Chang-Min Yoon, Joo Hyun Moon, Sungwook Leo Hong, “Exploring mechanical performance in Al-Pt binary alloys through molecular dynamics simulations,” Physics Open 25, 100310, 2025.  (IJ33, IF1.4)
https://doi.org/10.1016/j.physo.2025.100310  

H.S. Sim, S. Jekal, C.-M. Yoon, S.L. Hong, Combined Experimental and Reactive Molecular Dynamics Study on Stability and Oxidation of Aluminum Nanoparticles with Silane-Based Coatings, Progress in Organic Coatings 205, 109289, 2025. (IJ32, IF6.5)
https://doi.org/10.1016/j.porgcoat.2025.109289

D. Rodriguez, H.S. Sim, E. Choi, S.-Y. Kim, J. Nam, S. Kim, S.L. Hong, Computational Fracture and Thermal Analysis of Glass-Ceramics using ReaxFF Reactive Molecular Dynamics Simulations, Heliyon 11(3), e42333, 2025. (IJ31, IF3.4)
https://doi.org/10.1016/j.heliyon.2025.e42333

H.S. Sim, E. Cenker, E. Choi, K. Wan, S.A. Skeen, J. Manin, Experimental and Numerical Study of Soot Formation in Hydrocarbon Sprays under High-Pressure Fuel Pyrolysis Conditions, Applications in Energy and Combustion Science 21, 100310, 2025.  (IJ30, IF5.0, ESCI) https://doi.org/10.1016/j.jaecs.2024.100310

H.S. Sim, Evaluation of the synergistic effect of platinum-supported graphene materials on methylcyclohexane decomposition via flow reactor experiments and reactive force-field molecular dynamics simulations, Fuel 381, 133554, 2025. (IJ29, IF6.7)
https://doi.org/10.1016/j.fuel.2024.133554

M.N. Azad, S. Zafar, A. Faiyad, H.S. Sim, S.L. Hong, Atomistic study of selenium doping effects on the mechanical properties of zinc-blende and wurtzite CdTe nanowires, Computational Materials Science 246, 113410, 2025. (IJ28, IF3.1)
https://doi.org/10.1016/j.commatsci.2024.113410

H.S. Sim, W. Lukas, N. Maes, L.M. Pickett, High spatiotemporal resolution optical measurements of two-stage ignition and combustion in Engine Combustion Network Spray D flames, Case Studies in Thermal Engineering 62, 105192, 2024. (IJ27, IF6.4)
https://doi.org/10.1016/j.csite.2024.105192

E. Choi, J. Park, J. Hwang, H. Oh, J. Manin, H.S. Sim, Injection rate measurements and Machine-Learning based predictions of ECN Spray A-3 piezoelectric injector, Applied Thermal Engineering 254, 123827, 2024. (IJ26, IF6.1)
https://doi.org/10.1016/j.applthermaleng.2024.123827

J. Kim, Z. Otgonbayar, S. Jekal, M. Sa, C.G. Kim, H.Y. Kim, Y.R. Chu, H.S. Sim, J. Noh, C.-M. Yoon, Designing black yet highly LiDAR-detectable double-shell hollow nanoparticles for autonomous driving environments, Chemical Engineering Journal 494, 152902, 2024. (IJ25, IF13.4) https://doi.org/10.1016/j.cej.2024.152902

S. Jekal, Z. Otgonbayar, Y.R. Chu, H.Y. Kim, C.G. Kim, J. Kim, J. Noh, H. Kim, H.S. Sim, H.J. Le,, H. Lee, C.-M. Yoon, Designing Novel Dual-Silane-Capped Boron Nanoparticles for Jet Fuels Targeting Simultaneous Enhancement in Combustion and Dispersion Stability, Energy & Fuels 38(11), 10130-10143, 2024. (IJ24, IF5.2)
https://doi.org/10.1021/acs.energyfuels.4c00903

J. Noh, S. Jekal, J. Kim, H.Y. Kim, Y.R. Chu, C.G. Kim, W.C. Oh, S. Song, H.S. Sim, C.-M. Yoon, Vivid-Colored Electrorheological fluids with simultaneous enhancements in color clarity and Electro-Responsivity, Journal of Colloid and Interface Science 657, 373-383, 2024. (IJ23, IF9.4)
https://doi.org/10.1016/j.jcis.2023.11.183 

S. Kim, C. M. Yoon, H.S. Sim, S. Hong, Sintering and oxidation characteristics of aluminum nanoparticles coated with hydrocarbons: A ReaxFF molecular dynamics simulation study, Physics Letters A 483, 129060, 2023. (IJ22, IF2.3)
https://doi.org/10.1016/j.physleta.2023.129060

H.S. Sim, N. Maes, L.M. Pickett, S.A. Skeen, J. Manin, High-speed formaldehyde planar laser-induced fluorescence and schlieren to assess influences of injection pressure and oxygen concentration on Spray A flames, Combustion and Flame 253, 112806, 2023. (IJ21, IF5.8) https://doi.org/10.1016/j.combustflame.2023.112806

D.Y. Kim; W.B. Kim, J. Choi, H.S. Sim, J. H. Moon, Modeling consolidation of wax deposition for progressive cavity pump using computational fluid dynamics, Engineering Science and Technology-An International Journal 41, 101384, 2023. (IJ20, IF5.1)
https://doi.org/10.1016/j.jestch.2023.101384

N. Maes, F. Tagliante, H.S. Sim, M. Meijer, J. Manin, L.M. Pickett, Considerations for the temperature stratification in a pre-burn constant-volume combustion chamber, Experimental Thermal and Fluid Science  144, 110866, 2023. (IJ19, IF2.8)
https://doi.org/10.1016/j.expthermflusci.2023.110866

F. Tagliante, T. Nguyen, M. Dhanji, H. S. Sim, L.M. Pickett, J. Manin, K. Wan, The role of cool-flame fluctuations in high-pressure spray flames, studied using optical diagnostics and Large-Eddy Simulations, Proceedings of the Combustion Institute 39 (4), 4871-4879, 2023. (IJ18, IF5.3)
https://doi.org/10.1016/j.proci.2022.07.242

S. Lee, J. Noh, S. Jekal, J. Kim, W.-C. Oh, H.S. Sim, H.-J. Choi, H. Yi, C.-M. Yoon, Hollow TiO₂ nanoparticles capped with polarizability-tunable conducting polymers for improved electrorheological activity, Nanomaterials 12(19), 3521, 2022. (IJ17, IF4.4)
https://doi.org/10.3390/nano12193521

K. Wan, J. Manin, H.S. Sim, I. Karathanassis, Soot and PAH formation in high pressure spray pyrolysis of gasoline and diesel fuels, Combustion and Flame 241, 112084, 2022. (IJ16, IF5.8)
https://doi.org/10.1016/j.combustflame.2022.112084

F. Tagliante, T.M. Nguyen, L.M. Pickett, H.S. Sim, Large-eddy simulation of laser-ignited direct injection gasoline spray for emission control, Energies, 14(21), 7276, 2021. (IJ15, IF3.0)
https://doi.org/10.3390/en14217276

H.S. Sim, N. Maes, W. Lukas, L.M. Pickett, S.A. Skeen, Detailed measurements of transient two-stage ignition and combustion processes in high-pressure spray flames using simultaneous high-speed formaldehyde PLIF and schlieren imaging, Proceedings of the Combustion Institute 38, 5713-5721, 2021. (IJ14, IF5.3)
https://doi.org/10.1016/j.proci.2020.09.026

*Distinguished Paper Award, 38th International Symposium on Combustion

H.S. Sim, R.A. Yetter, S. Hong, A.C.T. van Duin, D.M. Dabbs, I.A. Aksay, Enhanced fuel decomposition in the presence of colloidal functionalized graphene sheet-supported platinum nanoparticles, ACS Applied Energy Materials 3 (8), 7637-7648, 2020. (IJ13, IF5.5)
https://doi.org/10.1021/acsaem.0c01010

H.S. Sim, A. Vargas, D.D. Ahn, A.R. Karagozian, Laminar microjet diffusion flame response to transverse acoustic excitation, Combustion Science and Technology 192(7), 1292-1319, 2020. (IJ12, IF1.7)
https://doi.org/10.1080/00102202.2020.1726897

H.S. Sim, R.A. Yetter, S. Hong, A.C.T. van Duin, D.M. Dabbs, I.A. Aksay, Functionalized graphene sheet as a dispersible fuel additive for catalytic decomposition of methylcyclohexane, Combustion and Flame, 217, 212-221, 2020. (IJ11, IF5.8)
https://doi.org/10.1016/j.combustflame.2020.04.002

H.S. Sim, R.A. Yetter, T.L. Connell, D.M. Dabbs, I.A. Aksay, Multifunctional graphene-based additives for enhanced combustion of cracked hydrocarbon fuels under supercritical conditions, Combustion Science and Technology 192(7), 1420-1435, 2020. (IJ10, IF1.7)
https://doi.org/10.1080/00102202.2020.1737033

H.S. Sim, M.P. Plascencia, A. Vargas, A.R. Karagozian, Acoustically forced droplet combustion of liquid fuel with reactive aluminum nanoparticulates, Combustion Science and Technology 192, 761-785, 2020. (IJ9, IF1.7)
https://doi.org/10.1080/00102202.2019.1593971

H.S. Sim, M.P. Plascencia, A. Vargas, J.W. Bennewitz, O.I. Smith, A.R. Karagozian, Effects of inert and energetic nanoparticles on burning liquid fuel droplets, Combustion Science and Technology 191, 1079-1100, 2019. (IJ8, IF1.7)
https://doi.org/10.1080/00102202.2018.1509857

J.W. Bennewitz, D. Valentini, M. A. Plascencia, A. Vargas, H.S. Sim, B. Lopez, O.I. Smith, A.R. Karagozian, Periodic partial extinction in acoustically coupled fuel droplet combustion, Combustion and Flame 189, 46-61, 2018. (IJ7, IF5.8)
https://doi.org/10.1016/j.combustflame.2017.10.019

H.S. Sim, S.H. Lee, S. Park, Y.K. Choi, J.S. Lee, Femtosecond laser pulse train effects on optical characteristics and nonequilibrium energy in metal thin films, Materials Transactions 51(6), 1156-1162, 2010. (IJ6, IF1.2)
https://doi.org/10.2320/matertrans.M2010009

H.S. Sim, K.G. Kang, S.H. Lee, Femtosecond pulse laser interactions with thin silicon films and crater formation considering optical phonons and wave interference, Microsystem Technologies 14(9-11), 1439-1446, 2008. (IJ5, IF1.6)
https://doi.org/10.1007/s00542-007-0554-3

H.S. Sim, K.G. Kang, S.H. Lee, J.M. Kim, Y.E. Shin, A numerical study on nonequilibrium heat transfer and crater formation in thin metal films irradiated by femtosecond pulse laser, Materials Science Forum, 580–582, 143–146, 2008. (IJ4, IF0.399)
https://doi.org/10.4028/www.scientific.net/MSF.580-582.143

H.S. Sim, S.H. Lee, Numerical investigation of opto-energy phenomena in thin gold films irradiated by femtosecond pulse laser considering quantum effects, Numerical Heat Transfer Part A-applications 54(3), 279-292, 2008. (IJ3, IF2.8)
https://doi.org/10.1080/10407780802084496

H.S. Sim, J.S. Lee, S.H. Lee, Numerical analysis of crater formation and ablation depth in thin films irradiated by ultrashort pulse train lasers, Journal of Mechanical Science and Technology 21, 1847-1857, 2007. (IJ2, IF1.5)
https://doi.org/10.1007/BF03177440

S.H. Lee, H.S. Sim, J. Lee, J.M. Kim, Y.E. Shin, Three temperature model for nonequilibrium energy transfer in semiconductor films irradiated with short pulse lasers, Materials Transactions 47, 2835-2841, 2006. (IJ1, IF1.2)
https://doi.org/10.2320/matertrans.47.2835