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Search Publications by: Youngju Kim ()

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Displaying 1 - 5 of 5

Application of neutron grating interferometry and tomography to study ancient Korean copper-based coins

April 28, 2025
Author(s)
Youngju Kim, Michael Daugherty, Caitlyn Wolf, Daniel Hussey, Jacob LaManna, David Jacobson, Paul A. Kienzle, Daeseung Kim, Seung Wook Lee, Minsoo Han, Hahn Choo, Jongyul Kim, Taejoo Kim
Distinguishing differences between authentic artifacts and replicas is a significant challenge in the field of cultural heritage. In this study, we explore the application of neutron grating interferometry and tomography techniques to identify ancient

Small-Angle Scattering and Dark-Field Imaging for Validation of a New Neutron Far-Field Interferometer

December 1, 2024
Author(s)
Caitlyn M. Wolf, Peter Bajcsy, Wei-Ren Chen, Robert Dalgliesh, Michael Daugherty, Liliana de Campo, Fumiaki Funama, Lilin He, Michael Huber, David Jacobson, Paul A. Kienzle, Youngju Kim, Hubert King, Nikolai Klimov, Jacob LaManna, Fankang Li, Alexander Long, Ryan Murphy, Gergely Nagy, Sarah M. Robinson, Pushkar Sathe, Gregory N. Smith, Anna Sokolova, Sven Vogel, Erik Watkins, Yuxuan Zhang, Daniel Hussey, Kathleen Weigandt
The continued advancement of complex materials often requires a deeper understanding of the structure–function relationship across many length scales, which quickly becomes an arduous task when multiple measurements are required to characterize

Simulation of Neutron Dark-Field Data for Grating-Based Interferometers

April 1, 2024
Author(s)
Caitlyn Wolf, Youngju Kim, Paul A. Kienzle, Pushkar Sathe, Michael Daugherty, Peter Bajcsy, Daniel Hussey, Kathleen Weigandt
Hierarchical structures and heterogeneous materials are found in many natural and engineered systems including additive manufacturing, alternative energy, biology and polymer science. Though the structure–function relationship is important for developing

Phase retrieval based on deep learning in grating interferometer

April 25, 2022
Author(s)
Ohsung Oh, Youngju Kim, Daeseung Kim, Daniel Hussey, Seung Wook Lee
Grating interferometry is a promising technique to obtain differential phase contrast images with illumination source of low intrinsic transverse coherence. However, retrieving the phase contrast image from the differential phase contrast image is

Analysis of a silicon comb structure using an inverse Talbot-Lau neutron grating interferometer

March 3, 2022
Author(s)
Youngju Kim, Daeseung Kim, Jongyul Kim, Daniel Hussey, Mona Mirzaei, Dmitri Pushin, Charles W. Clark, Seung Lee
We describe an inverse Talbot-Lau neutron grating interferometer that provides an extended autocorrelation length range for quantitative dark-field imaging. To our knowledge, this is the first report of a Talbot-Lau neutron grating interferometer (nTLI)
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