A5100746304- Cryptography and Data Security
- Complexity and Algorithms in Graphs
- Polymer composites and self-healing
- Structural Analysis and Optimization
- Structural Behavior of Reinforced Concrete
- Structural Load-Bearing Analysis
- Coding theory and cryptography
- Cryptography and Residue Arithmetic
- Material Properties and Applications
- Silicone and Siloxane Chemistry
- Electron and X-Ray Spectroscopy Techniques
- Advanced Materials and Mechanics
- Semiconductor materials and devices
- Advancements in Photolithography Techniques
- Synthesis and properties of polymers
- Cryptographic Implementations and Security
- ZnO doping and properties
- Topology Optimization in Engineering
- Functional Brain Connectivity Studies
- Vehicle Noise and Vibration Control
- Multilevel Inverters and Converters
- Shape Memory Alloy Transformations
- Elasticity and Material Modeling
- Transition Metal Oxide Nanomaterials
- Cyclone Separators and Fluid Dynamics
Korea Institute of Science and Technology
2024
Korea Institute of Materials Science
2024
Seoul National University
1999-2022
Yonsei University
2007-2022
Hanwha Solutions (South Korea)
2022
Sejong University
2018
Incheon Medical Center
2015
National Institute for Mathematical Sciences
2015
Samsung (South Korea)
2015
Incheon National University
2015
A rGO/TiO<sub>2</sub> free standing film has been fabricated <italic>via</italic> a simple and facile vacuum filtration system. The composite electrode showed improved electrochemical properties compared to the pure rGO due highly expanded layer-structure.
Aircraft require numerous composite parts, which are fastened with rivets. However, these rivet fastening processes have several disadvantages, including delamination during drilling, increased weight, galvanic corrosion metallic rivets, and thermal expansion mismatch. Here, the authors develop a hierarchical carbon fiber reinforced thermoplastic (CFRTP) rivets using MWCNT for high strength enhanced electrical/thermal conductivity, achieving 907 S/m 0.750 W/m∙K, respectively. The conductive...
We introduce a hybrid homomorphic encryption that combines public-key (PKE) and somewhat (SHE) to reduce the storage requirements of most or fully (FHE) applications. In this model, messages are encrypted with PKE computations on data carried out using SHE FHE after decryption. To obtain efficient decryption, our scheme IND-CPA without complicated message padding large integer space. Furthermore, if underlying is multiplicative, proposed has advantage polynomials arbitrary degree can be...
We developed age, gender and ethnic specific brain templates based on MR Positron-Emission Tomography (PET) images of Korean normal volunteers. Seventy-eight right-handed volunteers (M/F=49/29) underwent 3D T1-weighted SPGR F-18-FDG PET scans. For the generation standard templates, an optimal target that has average global hemispheric shape was selected for each gender. were then spatially normalized by linear transformation to brains, normalization parameters reapplied images. Subjects...
This paper deals with the one-dimensional static and dynamic analysis of thin-walled closed beams general quadrilateral cross sections. The coupled deformations distortion as well torsion warping are investigated in this work. A new approach to determine functions describing section is proposed. In particular, present function satisfies all necessary continuity conditions unlike Vlasov's function. Based on these deformation functions, a theory dealing presented. actual numerical work carried...
For the design of shear connections with a full-depth precast slab, it is necessary to investigate strength, stiffness, slip capacity and fatigue endurance. these purposes, push-out tests were performed variations stud shank diameter compressive strength mortar. From experimental work, could be observed that deformations studs in slab greater than those cast-in-place slab. The static strengths obtained agree approximately evaluated from tensile connectors owing effect bedding layer. An...
Abstract The temperature-rate dependent thermomechanical behavior of shape-memory polymers (SMPs) is challenging to study, because the microstructure SMPs cannot rearrange instantaneously an equilibrium configuration in response temperature changes. Herein, we report a three-dimensional constitutive model for based on two-phase consisting rubbery and glassy phases. To describe effect rate SMPs, variation volume fraction each phase affected by was considered under different conditions....
Recently, attempts to overcome the physical limits of memory devices have led development promising materials and architectures for next-generation technology. The selector device is one essential ingredients high-density stacked systems. However, complicated constituent deposition conditions thermal degradation are problematic, even with effective materials. Herein, we demonstrate highly stable low-threshold voltages vanadium pentoxide (V2O5) nanosheets synthesized by facile chemical vapor...
The three-dimensional (3D) deployment behavior of a shape memory polymer (SMP) was quantitatively characterized using 3D descriptors. descriptor is numerical value which represents and analyzes the information given shape. A deployable antenna designed fabricated an epoxy-based SMP. First, folding observed during in device. At this time, its entire scanned, processed, converted into surface data. Two-dimensional (2D) (area circularity) (compactness cubeness) descriptors were calculated from...
Due to the complicated deformations occurring in thin-walled multicell beams, no satisfactory one-dimensional beam theory useful for general quadrilateral multicells appears available. In this paper, we present a new systematic approach analyze coupled of torsion, distortion, and related warping. To develop theory, method determine section deformation functions associated with distortion distortional warping is newly developed. order guarantee singlevaluedness function multicells, shear...
A method for metal nanopowder imprinting is proposed as a patterning process conductive tracks, which inexpensive and scalable down to submicrometers. To examine the feasibility of method, tracks with widths submicrometers few tens micrometers were formed using thermal nanoimprinting system, effects processing conditions on degree replication sintering electric conductivity imprinted analyzed.
Polyimides, a widely used engineering plastic, require use of large amounts toxic and hazardous organic solvents which threaten our daily lives, calling for new easy synthetic methods sustainable environmentally friendly development. In this paper, highly soluble fluorinated polyimides based on 4,4′-(hexafluoroisopropylidene) diphthalic anhydride were synthesized via hydrothermal process without using any the advantages newly demonstrated are shown by comparative analysis performed with two...
This study reviews the assumption that lightweight design of commercial vehicles is significant from aspect anticipated fuel consumption and environmental regulations are consequently applicable to those vehicles. Generally speaking, it noted among numerous trailer components, a stub axle, which designed independently operate as an integral part trailer’s suspension, can play important role in increasing shipping capacity box trailer. For this reason, because each axle comparatively heavy...
EUV masks include many different layers of various materials rarely used in optical masks, and each layer material has a particular role enhancing the performance lithography. Therefore, it is crucial to understand how mask quality patterning can change during fabrication, exposure, maintenance cleaning, shipping, or storage. SPM (Sulfuric acid peroxide mixture) which been extensively for cleaning photomask wafer serious drawback cleaning. It shows severe film loss tantalum-based absorber...