Jongweon Cho
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View article: Electrical conductivity of copper in the low temperature region of warm dense matter
Electrical conductivity of copper in the low temperature region of warm dense matter Open
In this study, electrical conductivity of copper in the low temperature part of a warm dense matter regime is investigated utilizing underwater electrical wire explosion. Specifically, for the vapor/plasma region with a density of ∼0.01 no…
View article: Microscopic mechanisms for initiation and evolution of femtosecond laser-induced columnar structures above the surface level of aluminum
Microscopic mechanisms for initiation and evolution of femtosecond laser-induced columnar structures above the surface level of aluminum Open
A better understanding of the formation of femtosecond (fs) laser-induced surface structures is key to the control of their morphological profiles for desired surface functionalities on metals. In this work, with fs laser pulse irradiation…
View article: Deep learning-based optical authentication using the structural coloration of metals with femtosecond laser-induced periodic surface structures
Deep learning-based optical authentication using the structural coloration of metals with femtosecond laser-induced periodic surface structures Open
Structurally colored materials present potential technological applications including anticounterfeiting tags for authentication due to the ability to controllably manipulate colors through nanostructuring. Yet, no applications of deep lea…
View article: Multi-Angular Colorimetric Responses of Uni- and Omni-Directional Femtosecond Laser-Induced Periodic Surface Structures on Metals
Multi-Angular Colorimetric Responses of Uni- and Omni-Directional Femtosecond Laser-Induced Periodic Surface Structures on Metals Open
We investigated the colorimetric behaviors of metal surfaces with unidirectional low-spatial-frequency laser-induced periodic surface structures (UD-LSFLs) and omnidirectional LSFLs (OD-LSFLs) fabricated using femtosecond laser pulse irrad…
View article: Imaging structural transitions in organometallic molecules on Ag(100) for solar thermal energy storage
Imaging structural transitions in organometallic molecules on Ag(100) for solar thermal energy storage Open
The use of opto-thermal molecular energy storage at the nanoscale creates new opportunities for powering future microdevices with flexible synthetic tailorability. Practical application of these molecular materials, however, requires a dee…
View article: Effects of Cracking Test Conditions on Estimation Uncertainty for Weibull Parameters Considering Time-Dependent Censoring Interval
Effects of Cracking Test Conditions on Estimation Uncertainty for Weibull Parameters Considering Time-Dependent Censoring Interval Open
It is extremely difficult to predict the initiation time of cracking due to a large time spread in most cracking experiments. Thus, probabilistic models, such as the Weibull distribution, are usually employed to model the initiation time o…