A5038705580- Aluminum Alloys Composites Properties
- Advanced ceramic materials synthesis
- Advanced materials and composites
- Carbon Nanotubes in Composites
- Additive Manufacturing and 3D Printing Technologies
- Microstructure and Mechanical Properties of Steels
- Nanotechnology research and applications
- Material Properties and Applications
- Graphene research and applications
- Metallurgy and Material Forming
- Metal and Thin Film Mechanics
- Microstructure and mechanical properties
- Aluminum Alloy Microstructure Properties
- Intermetallics and Advanced Alloy Properties
- High-Temperature Coating Behaviors
- High Entropy Alloys Studies
- Metal Alloys Wear and Properties
- Powder Metallurgy Techniques and Materials
- Fiber-reinforced polymer composites
- Nuclear Materials and Properties
- High Temperature Alloys and Creep
- Diamond and Carbon-based Materials Research
- Conducting polymers and applications
- Tribology and Wear Analysis
- High-Velocity Impact and Material Behavior
Korea Advanced Institute of Science and Technology
2014-2024
Korea Polar Research Institute
2020-2024
Jiaxing University
2021-2024
Korea Institute of Science and Technology
2011-2022
Hyundai Motor Group (South Korea)
2022
Korea Atomic Energy Research Institute
2013-2019
Government of the Republic of Korea
2017-2019
Therapeutics Clinical Research
2019
Ibero American University
2019
Oregon State University
2019
The band gap properties of graphene quantum dots (GQDs) arise from confinement effects and differ those in semimetallic sheets. Tailoring the size understanding tuning mechanism are essential for applications GQDs opto-electronics. In this study, we observe that photoluminescence (PL) shifts due to charge transfers between functional groups GQDs. functionalized with amine 1-3 layers thick less than 5 nm diameter were successfully fabricated using a two-step cutting process oxides (GOs)....
RGO flakes are homogeneously dispersed in a Cu matrix through molecular-level mixing process. This novel fabrication process prevents the agglomeration of and enhances adhesion between Cu. The yield strength 2.5 vol% RGO/Cu nanocomposite is 1.8 times higher than that pure strengthening mechanism investigated by double cantilever beam test using graphene/Cu model structure.
Carbon-nanotube-reinforced Cu matrix nanocomposites have been fabricated by molecular-level mixing of functionalized carbon nanotubes (CNTs) with ions, followed spark plasma sintering. The compressive strengths and Young's moduli CNT-reinforced are considerably higher than those the due to homogeneously dispersed CNTs embedded in (see Figure).
The scalable preparation of two-dimensional hexagonal boron nitride (h-BN) is essential for practical applications. Despite intense research in this area, high-yield production h-BN with large-size and high solubility remains a key challenge. In the present work, we propose exfoliation process hydroxyl-functionalized BN nanoplatelets (OH-BNNPs) by simple ball milling powders presence sodium hydroxide via synergetic effect chemical peeling mechanical shear forces. hydroxide-assisted results...
Nanocomposites reinforced with hybrid fillers of carbon nanotubes (CNTs) and black (CB) are developed, aiming at enhancing the electrical conductivity composites balanced mechanical properties while lowering cost final product. Epoxy-based nanocomposites were prepared varying combinations CNTs CB as conducting fillers, their evaluated. It was shown that addition in enhanced composites: a low percolation threshold achieved 0.2 wt % particles. The particles also ductility fracture toughness...
A hybrid system with vertical carbon nanotubes (CNTs) grown on reduced graphene films composed of overlapping and oxide platelets is reported. Such have excellent flexibility stretchability (see image), can be readily transferred to any substrate including nonplanar surfaces, were found Ohmic electrical contacts throughout all junctions in the CNT/metal-catalyst/graphene-film system. Detailed facts importance specialist readers are published as "Supporting Information". documents...
Abstract The influence of surface modifications on the mechanical properties epoxy‐hexagonal boron nitride nanoflake (BNNF) nanocomposites is investigated. Homogeneous distributions nanoflakes in a polymer matrix, preserving intrinsic material nanoflakes, key to successful composite applications. Here, method suggested obtain noncovalently functionalized BNNFs with 1‐pyrenebutyric acid (PBA) molecules and synthesize epoxy–BNNF enhanced properties. incorporation into epoxy resin yields an...
Super-strong carbon nanotube (CNT) fibers are fabricated by infiltration of the mussel-inspired underwater adhesives, poly(ethylenimine)-catechols (PEI-Cs). PEI-C mimics amino acid sequence mussel adhesive proteins in which catechols from 3,4- dihydroxyl-L-phenylalanine and amines lysine found. Weak interactions between CNTs overcome heat-induced, metal-catalyzed chemical crosslinking catechol. PEI-C’s strong versatile adhesion results high-strength CNT fibers. Detailed facts importance to...
Chemically bonded oxygen atoms at the carbon nanotube (CNT)/metal interface provide strong bonding between CNTs and a metal matrix (see picture). The origin of enhanced mechanical properties CNT/Cu is analyzed by load-transfer concept are found to be key factor in construction CNT/metal composites. Detailed facts importance specialist readers published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted authors. Please...
Carbon nanotube reinforced copper matrix (CNT/Cu) nanocomposites were fabricated by the modified molecular-level mixing process, which produces a homogeneous dispersion of CNTs in fine grained metal matrix. These nanocomposites, consisting 1.5μm Cu grains and 5vol% multiwall CNTs, show high strengthening capability; enhancing yield strength unreinforced 2.3 times. The enhanced stems from reinforcing effect additional hardening grain refinement. results reveal that metallurgical treatment is...