25 Result(s)
within
Nanotechnology
**joo Park
Article
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Article
Modulation of poly(β-amino ester) pH-sensitive polymers by molecular weight control
The main objective of this study was to modulate pH-sensitive polymers(poly(β-amino esters)) by controlling their molecular weight during their synthesis. These pH-sensitive and biodegradable polymers were syn...
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Transferrin-conjugated liposome/IL-12 pDNA complexes for cancer gene therapy in mice
Transferrin (Tf) has been used as a targeting ligand for delivering liposome/interleukin-12 (IL-12) pDNA complexes to cancer cells mostly due to the greater number of transferrin receptors (TfR) found on tumor ce...
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pH-sensitivity control of PEG-poly(β-amino ester) block copolymer micelle
Poly(ethylene glycol) methyl ether (PEG)-poly(β-amino ester) (PAE) block copolymers were synthesized using a Michael-type step polymerization, and the construction of pH-sensitive polymeric micelles (PM) inves...
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Solid-state phase separation in Zr–Y–Al–Co metallic glass
The present study shows that the as-melt-spun Zr28Y28Al22Co22 amorphous ribbon undergoes solid-state phase separation into Zr- and Y-rich regions when heated below the glass transition temperature (Tg). Dynamic m...
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Role of oxygen in the growth of carbon nanotubes on metal alloy fibers by plasma-enhanced chemical vapor deposition
A method allowing for the stable growth of carbon nanotubes (CNTs) on the surface of a fibrous metal mesh substrate (SUS304) was developed with the assistance of the microwave plasma-enhanced chemical vapor de...
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Homogeneity of the superplastic Zr64.13Cu15.75Ni10.12Al10 bulk metallic glass
A recent report on the “room temperature superplasticity” in the Zr64.13Cu15.75Ni10.12Al10 bulk metallic glass [Y.H. Liu et al., Science 315, 1385 (2007)] was ascribed to the distinctive micrometer-sized structur...
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Enhanced cellular responses of vascular endothelial cells on poly-γ-glutamic acid/PU composite film treated with microwave-induced plasma at atmospheric pressure
Poly-γ-glutamic acid (γ-PGA), which is produced by microbial fermentation, is a biodegradable, hydrophilic and non-toxic biomaterial. γ-PGA has many carboxyl groups that makes it a polyanionic biopolymer with swe...
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Pre-wetting process with helium atmospheric pressure glow discharge for three-dimensional porous scaffold
Recently, three-dimensional polymer scaffolds were developed for tissue regeneration. Conventional pre-wetting processes require a lengthy processing time and have residue problems. In this study, a helium atm...
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Open AccessInterface modification effect between p-type a-SiC:H and ZnO:Al in p-i-n amorphous silicon solar cells
Aluminum-doped zinc oxide (ZnO:Al) [AZO] is a good candidate to be used as a transparent conducting oxide [TCO]. For solar cells having a hydrogenated amorphous silicon carbide [a-SiC:H] or hydrogenated amorph...
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Micropillar array embedded system for single cell encapsulation in hydrogel
A cylindrical-shaped micropillar array embedded microfluidic device was proposed to enhance the dispersion of cell clusters and the efficiency of single cell encapsulation in hydrogel. Different sizes of micro...
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Open AccessPreparation of superhydrophobic and transparent micro-nano hybrid coatings from polymethylhydroxysiloxane and silica ormosil aerogels
Superhydrophobic and transparent polymethylhydroxysiloxane (PMHOS)/silica ormosil aerogel hybrids were prepared successfully by mixing of PMHOS with various weight percentages of silica ormosil aerogels (as sy...
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Open AccessVertical-Injection AlGaInP LEDs with n-AlGaInP Nanopillars Fabricated by Self-Assembled ITO-Based Nanodots
The light output power of AlGaInP-based vertical-injection light-emitting diodes (VI-LEDs) can be enhanced significantly using n-AlGaInP nanopillars. n-AlGaInP nanopillars, ~200 nm in diameter, were produced u...
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A Structural Study on the Foaming Behavior of CaO-SiO2-MO (MO = MgO, FeO, or Al2O3) Ternary Slag System
The foaming index of the CaO-SiO2-MO (MO = MgO, FeO, or Al2O3) ternary slag system with a fixed CaO/SiO2 ratio is measured to understand the effect of the ionic structure. At 1773 K (1500 °C), the foaming index o...
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Effect of Iron Redox Equilibrium on the Foaming Behavior of MgO-Saturated Slags
In this study, the foaming index of CaO-SiO2-FetO and CaO-SiO2-FetO-Al2O3 slags saturated with MgO was measured to understand the relationship between their foaming behavior and physical properties. The foaming i...
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Graphene quantum dots prevent α-synucleinopathy in Parkinson’s disease
Graphene quantum dots inhibit the formation of alpha-synuclein fibrils and induce their dissociation in vitro, and display neuro-protective properties in in vivo models of Parkinson’s disease, with no apprecia...
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Thermodynamic Study on MgO Solubility in High-Alumina-Content Slag System
In the current study, the MgO solubility in molten slag was measured to clarify the effect of basicity and Al2O3 content on the MgO solubility equilibrating with the spinel solid phase in the CaO-SiO2-Al2O3 syste...
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Phase Transformations and Microstructural Development in the U-10 Wt Pct Mo Alloy with Varying Zr Contents After Heat Treatments Relevant to the Monolithic Fuel Plate Fabrication Process
Decomposition of metastable, isotropic, body-centered cubic γ-phase in the U-10 wt pct Mo alloys with varying Zr contents was investigated as function of heat treatment parameters (i.e., temperature and time) rel...
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Correction to: Thermodynamic Study on MgO Solubility in High-Alumina-Content Slag System
In the original article, the project number under Acknowledgements section is incorrect which is now corrected in this erratum. The correct statement should read as follows.
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Sulfur Incorporation at Interface Between Atomic-Layer-Deposited Al2O3 Thin Film and AlGaN/GaN Heterostructure
Surface incorporation at the interface between atomic-layer-deposited Al2O3 thin film and AlGaN/GaN heterostructure was studied based on the understanding of charge configuration and electronic band structure thr...
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Strategic separation of metal sulfides from residual wet-chemical precursors for synchronous production of pure water and nanostructured photocatalysts
Pseudo successive ionic layer adsorption and reaction (p-SILAR) is an emerging technique for deposition of quantum dots (QDs) on a variety of nanoparticles (NPs); however, it has a limitation of wastage of water-...
