Abstract
This study investigates the mechanical behavior and deformation characteristics of Inconel 718 lattice structures with different unit cell sizes fabricated by laser powder bed fusion (LPBF). Two body-centered cubic (BCC) lattice structures with unit cell sizes of 2 mm (BCC 2) and 4 mm (BCC 4) were designed while maintaining..... More

Abstract
The automotive industry's ecosystem is rapidly shifting from internal combustion engine (ICE) vehicles to electric vehicles (EVs). This transition significantly increases vehicle weight due to added batteries and numerous convenience features. As a result, the use of aluminum in vehicles is rising. However, joining dissimilar materials like aluminum and steel..... More

Abstract
In this study, we systematically investigated the mechanisms enabling localized solidification crack-free welding of directionally solidified (DS) 247LC superalloy using a single-mode fiber laser, with a particular focus on the correlation with the columnar-to-equiaxed transition (CET) theory. Welding was performed on a single DS grain under twelve conditions, varying heat..... More

Abstract
Zinc oxide (ZnO) is a multifunctional material extensively used in ceramics, electronics, pigments, and pharmaceuticals. The increasing global demand for ZnO, coupled with growing environmental concerns, necessitates the development of resource-efficient and eco-friendly manufacturing methods. This study investigates a dry metallurgical approach for recovering high-purity ZnO powder from zinc ferrite-rich..... More

Abstract
This study developed a method of fabricating heatable textiles using silver (Ag) and copper (Cu) nanowires (NWs) and various textile substrates (knit silk, rayon, silk scarf, poplin and polyester) using a repeated dip-and-dry process. The effects of substrate type, nanowire material, and processing conditions on electrical and thermal performance were..... More

Abstract
To address the intermittent nature of renewable energy, highly efficient high-performance energy storage devices are essential. Among various options, supercapacitors have attracted significant attention because they provide high power density, rapid charge–discharge capability, and long cycle life. In this study, a composite of amorphous Cu(OH)₂ grown on a metal–organic framework..... More

Abstract
Water splitting is a highly promising approach for producing high-purity hydrogen using renewable energy sources, providing a sustainable and environmentally friendly pathway to carbon neutrality. Of the two half-reactions involved in water electrolysis, the hydrogen evolution reaction (HER) plays a particularly critical role, as it largely determines the overall energy..... More

Abstract
Polymer-based gas sealing technology is a key component to ensure the safety and reliability of high-pressure gas systems, and it is essential for infrastructure such as hydrogen refueling stations. In particular, the sealing performance of polymer materials used in O-rings varies depending on the gas diffusion characteristics of each gas...... More