To request reprints, please contact Kunmo Koo: kunmo.koo@pusan.ac.kr

[19] Radiolysis Chemistry in Fluid Cell Electron Microscopy

ACS Nano, 19, 10, 10369-10380, 2025 

K. Koo, N. S. Chellam, S. Shim, C. A. Mirkin, G. C. Schatz, X. Hu*, and V. P. Dravid* 

[18] Oxidation-Driven Enhancement of Intrinsic Properties in MXene Electrodes for High-Performance Flexible Energy Storage

Advanced Functional Materials, 35, 16, 2419650, 2025 

Y. Cheng, K. Koo, Y. Liu, M. L. Barsoum, Z. Cai, O. K. Farha, X. Hu*, and V. P. Dravid*

[17] Exploring Atomic-Scale Interactions at the Interface of Reducible Oxide and Ruthenium Nanocatalyst for Ammonia Decomposition

ACS Materials Letters, 2025 

M. Kim, H. Choi, J. Park, J. Liu, S. Kim, K. Koo, V. P. Dravid, D. Whang, S. Li, and J. T. Hupp*

[16] Unraveling the Adsorption-Limited Hydrogen Oxidation Reaction at Palladium Surface via in situ Electron Microscopy

Proceedings of the National Academy of Sciences (PNAS), 121, 40, e2408277121, 2024  (Direct Submission)

 Y. Liu†, K. Koo†, Z. Mao, X. Fu, X. Hu, and V. P. Dravid*

[15] Investigating Charge-Induced Transformations of Metal Nanoparticles in a Radically-Inert Liquid: A Liquid-Cell TEM Study

Nanomaterials, 14, 21, 1709, 2024 

K. Koo, J. H. Seo, J. Lee, S. Lee, and J. -H. Kwon*

[14] Advances and Opportunities in the Closed-cell Gas Transmission Electron Microscopy

Chemistry of Materials, 36, 9, 4078-4091, 2024 (Invited Review)

K. Koo, Y. Liu, Y. Cheng, Z. Cai, X. Hu*, and V. P. Dravid* 

[13] Abnormal Silicon Etching Behaviors in Nanometer-Sized Channels

Nano Letters, 24, 16, 4900-4907, 2024

K. Koo†, J. H. Chang†, S. Ji†, H. Choi, S. H. Cho, S. J. Yoo, J. Choe, H. S. Lee, S. W. Bae, J. M. Oh, H. S. Woo, S. Shin, K. Lee, T. -H. Kim, Y. S. Jung, J. -H Kwon, J. H. Lee, Y. Huh, S. Kang, H. Y. Kim, and J. M. Yuk*

[12] Ultrathin Silicon Nitride Microchip for in-situ/operando Microscopy with High Spatial Resolution and Spectral Visibility

Science Advances, 10, eadj6417, 2024

K. Koo, Z. Li, Y. Liu, S. M. Ribet, X. Fu, Y. Jia, X. Chen, G. Shekhawat, P. J. M. Smeets, R. d. Reis, J. Park, J. M. Yuk, X. Hu*, and V. P. Dravid*

[11] Formation Mechanism of High-index Faceted Pt-Bi Alloy Nanoparticles by Evaporation-induced Growth from Metal Salts

Nature Communications, 14, 3790, 2023

K. Koo†, B. Shen†, S. -I. Baik, Z. Mao, P. J. M. Smeets, I. Cheuk, K. He, R. d. Reis, L. Huang, Z. Ye, C. Mirkin*, X. Hu*, and V. P. Dravid*

[10] Unlocking the Mysterious Polytypic Features within Vaterite CaCO3

Nature Communications, 14, 7858, 2023

X. San†, J. Hu†, M. Chen, H. Niu*, P. J. M. Smeets, C. D. Malliakas, J. Deng, K. Koo, R. d. Reis, V. P. Dravid*, and X. Hu*

[9] Effect of the Encapsulation Membrane in Operando Scanning Transmission Electron Microscopy

Nano Letters, 22, 10, 4137-4144, 2022 

K. Koo†, S. M. Ribet†, C. Zhang, P. J. M. Smeets, R. d. Reis, X. Hu*, and V. P. Dravid* 

[8] Liquid-Flowing Graphene Chip-Based High-Resolution Electron Microscopy

Advanced Materials, 33, 2, 2005468, 2021 

K. Koo†, J. Park†, S. Ji, S. Toleukhanova, and J. M. Yuk*

[7] Protein-induced Metamorphosis of Unilamellar Lipid Vesicles to Multilamellar Hybrid Vesicles

Journal of Controlled Release, 331, 187-197, 2021

B. I. Koo, I. Kim, M. Y. Yang, S. D. Jo, K. Koo, S. Y. Shin, K. M. Park, J. M. Yuk, E. Lee*, and Y. S. Nam* 

[6] Graphene Liquid Cell Electron Microscopy: Progress, Applications, and Perspectives

ACS Nano, 15, 1, 288–308, 2021 (Invited Review)

J. Park, K. Koo, N. Noh, J. H. Chang, J. Y. Cheong, K. S. Dae, J. S. Park, S. Ji, I. -D. Kim, and J. M. Yuk*

[5] Live Cell Electron Microscopy Using Graphene Veils

Nano Letters, 20, 6, 4708-4713, 2020

K. Koo, K. S. Dae, Y. K. Hahn*, and J. M. Yuk*

[4] Lithographically Patterned Well-Type Graphene Liquid Cells with Rational Designs

Lab on a Chip, 20, 15, 2796-2803, 2020

N. Noh, J. Park, J. S. Park, K. Koo, J. Y. Park, and J. M. Yuk*

[3] Real-time Observation of CaCO3 Mineralization in Highly Supersaturated Graphene Liquid Cells

ACS Omega, 5, 24, 14619-14624, 2020

K. S. Dae, J. H. Chang, K. Koo, J. Park, J. S. Kim, and J. M. Yuk*

[2] Sequential Growth and Etching of Gold Nanocrystals Revealed by High‐Resolution Liquid Electron Microscopy

Physica Status Solidi (a), 216, 7, 1970026, 2019

S. Y. Kim, K. S. Dae, K. Koo, D. Kim, J. Park, and J. M. Yuk*

[1] Gold Binding Peptide Identified from Microfluidic Biopanning: An Experimental and Molecular Dynamics Study

Langmuir, 35, 2, 522-528, 2019 

D. J. Lee, H. S. Park, K. Koo, J. Y. Lee, Y. S. Nam, W. Lee*, and M. Y. Yang*