Materials Literature
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Chiral templating and enantioselective separations are demonstrated on graphene surfaces as directed by encapsulated silica nanotubes. Electrostatic assembly of helical silica nanotubes within graphene sheets results in a hybrid material with the electrochemical properties of graphene and the capability for chiral rec…
Nanoparticles (NP) are defined as colloidal particles with a size ranging from one to several hundreds of nanometers. Over the past few decades, nanoparticles have transformed the field of drug and gene delivery. NPs are able to carry therapeutic agents, in the form of small molecule drugs, peptides, proteins and gene…
Using first-principles calculations, we identify a new orthorhombic boron nitride (BN) phase (namely, P-BN; space group: Pmn2(1)), which has similar topological structure to Bct-BN and Z-BN, but without the six-membered ring. This P-BN allotrope is energetically more favorable than previously reported Pnma-BN, Bct-BN…
Different aspects of using carbonaceous nanoparticles for the creation of polymer composites with improved physicomechanical and functional properties are considered. It is shown that functionalized car-bonaceous nanoparticles can be used as modifiers to control the process of curing and elastification of epoxy binder…
The crystal structure of (1−x)BaTiO3-xBiAlO3 (x = 0, 0.02, 0.05, 0.08, and 0.1) ceramics was determined using X-ray diffraction and Raman spectroscopy at room temperature, which revealed a phase transition from tetragonal to rhombohedral with increasing x. The dielectric properties were studied as a function of temper…
A comparative study of the corrosion behavior of galvanized steel under 3.5wt% NaCl and chloride-free simulated rust layer (SRL) solution was investigated using polarization curve and electrochemical impedance spectroscopy (EIS). The morphology, organization and chemical properties of the rust layer were detected by s…
A functional device to mimic the beetles of the genus Stenus is fabricated. A superhydrophobic hull is employed to replace the body of the beetles, with an attached reservoir to store low-surface-energy compounds to mimic the beetle's pygidial gland, and a pH-responsive mesh acts as its gland end, whose locomotion fro…
Reduced graphene oxide is an excellent candidate for various electronic devices such as high performance gas sensors. In this work Graphene oxide was prepared by oxidizing graphite to form graphite oxide. From XRD analysis the peak around 11.5o confirmed that the oxygen was intercalated into graphite. By using hydrazi…
Selective oxidation of methacrolein to methacrylic acid was carried out over Cu- and Fe-doped acidic cesium salts of molybdovanadophosphoric acids. The influences of preparation conditions on the structure and catalytic properties of the catalysts were investigated. Results showed that the addition method of NH 4 + in…
The microstructures and mechanical properties of Mg–2.0Zn–1.0Mn (ZM21) alloys with certain amount of Ce and Nd additions were investigated, and the influence mechanism of Ce and Nd on the microstructures and mechanical properties of extruded alloys was discussed. The results indicated that the addition of Nd and Ce ca…
Tissue engineering requires an ideal scaffold that will aid in the regeneration of the damaged tissues both structurally and functionally. Conventionally, polymeric nanofibrous scaffolds have been extensively used due to their structural similarity to the native extracellular matrix. Thus far, top-down approaches like…
Polyhydroxyalkanoates (PHAs) are biodegradable biocompatible polyesters, which accumulate as granules in the cytoplasm of many bacteria under unbalanced growth conditions. Medium-chain-length PHAs (mcl-PHAs), characterized by C6-C14 branched monomer chains and typically produced by Pseudomonas species, are promising t…
The benefits of multi-layer graphene (MLG) capping on Cu interconnects have been experimentally demonstrated. The resistance of MLG capped Cu wires improved by 2-7% compared to Cu wires. The breakdown current density increased by 18%, suggesting that the MLG can act as an excellent capping material for Cu interconnect…
The direct growth of planar-twinned Au nanoparticles (NPs) in high yield remains a challenge in shape-controlled NP synthesis largely because suitable planar-twinned seeds for Au NP growth have not been identified to date. Herein we describe the use of planar-twinned Ag triangular nanoprisms as a means to dictate Au N…
The present study describes the development of a green synthesis of silver nanoparticles reduced and stabilized by exuded gum from Anacardium occidentale L. and evaluates in vitro their antibacterial and cytotoxic activities. Characterization of cashew gum-based silver nanoparticles (AgNPs) was carried out based on UV…
Micro-arc oxidation (MAO) is one of the promising methods to improve the corrosion resistance of magnesium alloys. However, there are plenty of micro-pores in the traditional MAO films, deteriorating their protection property. A novel self-sealing pore MAO film was developed in this paper. The morphologies and chemica…
This study examined the consequences of surface carboxylation of multiwalled carbon nanotubes (MWCNT) on bioactivity. Since commercial raw MWCNT contain impurities that may affect their bioactivity, HCl refluxing was exploited to purify raw "as-received" MWCNT by removing the amorphous carbon layer on the MWCNT surfac…
Star-shaped polymer micelles have good stability against dilution with water, showing promising application in drug delivery. In this work, biodegradable micelles made from star-shaped poly(ε-caprolactone)/poly(ethylene glycol) (PCL/PEG) copolymer were prepared and used to deliver doxorubicin (Dox) in vitro and in viv…
Neurological diseases represent a medical, social, and economic problem of paramount importance in developed countries. Although their etiology is generally known, developing therapeutic interventions for the central nervous system is challenging due to the impermeability of the blood-brain barrier. Thus, the fight ag…
The effects of Gd concentration（0.1, 0.3, 0.7 wt%） on the microstructure, texture and mechanical properties of rolled and annealed Mg–2Zn– x Gd sheets have been investigated aiming to develop low cost and high ductile Mg–Zn–Gd sheets. Dynamic recrystallization, static recrystallization and grain growth during hot roll…