Materials Literature
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The ordered–disordered phase transformation temperature and time of Cu–Zn alloy before and after 2 GPa pressure treatment were measured by differential scanning calorimeter (DSC). The phase transformation activation energy and Avrami exponent were calculated and the effect of 2 GPa pressure treatment on the microstruc…
The electronic structure and magnetism of nanocrystalline graphite prepared by ball milling of graphite in an inert atmosphere have been investigated using valence band spectroscopy (VB), core level near-edge X-ray absorption fine structure (NEXAFS) spectroscopy and magnetic measurements as a function of the milling t…
The photoinduced growth reaction of silver nanoparticles was accelerated by reduced graphene oxide (RGO) produced from graphene oxide (GO) during the light irradiation process in aqueous solution. X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy demonstrated that RGO was generated in the photoinduced proc…
Contact angle measurement has wide application in studying the wettability of a surface. This paper presents a contact angle measurement system developed using simple apparatus. The system consists of a bespoke measurement software, USB microscope, motorized linear position slider and a sample holder with back lightin…
Biocellulose (BC), produced by Acetobacter xylinum (0416), was carried out using three types of medium composition under static surface culture. The media used in this experiment included CWHSM (Coconut water in Hestrin-Schramm medium), CM (Complex medium) and HSM (Hestrin-Schramm medium). CWHSM and CM used coconut wa…
This paper presents a novel vapor–solid growth approach of stem-like 1D vanadium oxide nanostructures in a core-regenerated fashion on VO2@TiO2 core–shell rods under a very low temperature (400 °C). The composition and microstructure of the as-grown nanostructures were analyzed by HRTEM, EDS and XPS, confirming the va…
This study reports novel water dispersable organic nanowires based on the assembly of aniline oligomers. Due to their unique properties, these nanowires can be used as templates for fabrication of various kinds of freestanding and open-ended oxide nanotubes.
Carbon nanomaterials, including few-layered graphene (FLG), were synthesized on high-purity copper and nickel wires in a microchannel within an alumina microcombustor with a methane/oxygen edge flame. The deposition occurred in 20 s with identifiable FLG Raman peaks. The FLG layers were characterized by Raman spectros…
A large band gap supramolecular polymer based on host–guest interactions was developed as the host material for phosphorescent organic light-emitting diodes. The dibenzo-24-crown-8, and dibenzylammonium salt functionalized fluorene-based large band gap compounds 1 and 2 were developed as the host and guest monomers, r…
The self-assembly of nanoparticles is an efficient and precise method to fabricate nanoscale devices. By manipulating iron oxide nanoparticles in suspension with an external field to form magnetically directed linear assemblies, we demonstrate the feasibility of using this structure to template the synthesis of PEDOT:…
Planar triazinium cationic species from vanadyl-assisted cyclization of 1-(2-thiazolylazo)-2-naphthol (H-TAN, 1), 1-(2-pyridylazo)-2-naphthol (H-PAN, 2), 2-(2'-thiazolylazo)-p-cresol (H-TAC, 3) and 6-(2'-thiazolylazo)-resorcinol (H-TAR, 5) were prepared and characterized. A dioxovanadium(V) species [VO(2)(TAR)] (4) wa…
The slow agglomeration of gold colloids of approximate diameter 30 nm in the presence of a small concentration of L-cysteine·HCl has been followed by multiple techniques, namely particle tracking analysis (PTA), differential centrifugal sedimentation (DCS), UV-visible spectroscopy (UV), second order spectroscopy (SOS)…
Core–shell polymeric particles consisting of biodegradable polylactide (PLA) arms emanating from a crosslinked polyurethane (PU) core were prepared in situ by a polymerization induced phase separation strategy. Sub-micron sized particles were spawned in dilute solution during polyurethane formation with simultaneous i…
One of the recent challenges in nanotechnology is the development of ‘catalyzed self-assembly’. So far successful cases are still scarce. In this work we report the delicate case of a cyclodextrin (CD) catalyzed self-assembly of the terthiophene-containing amphiphile TTC4L into microspheres. TT4CL can form precipitate…
In this manuscript, neat electrospun poly(o-methoxyaniline) (POMA) fibers were applied for the first time in the growth of neural stem cells. POMA was synthesized by chemical oxidative polymerization, followed by dissolving in tetrahydrofuran/dimethylformamide to prepare electrospinning solution. Subsequently, the sol…
Zinc oxide (ZnO) is a material with a great variety of industrial applications including high heat capacity, thermal conductivity and temperature stability. Clearly, it would be of great importance to find new stable and/or metastable modifications of zinc oxide, and investigate the influence of pressure and/or temper…
The colloidal gas–liquid phase behaviour has been studied for aqueous mixtures of well-defined spherical particles with short-ranged repulsions mixed with relatively monodisperse poly(ethylene oxide) polymers. We show that our set of experimental phase diagrams are in quantitative agreement with theoretical prediction…
Four new, non-symmetric, optically active, liquid crystal dimers in which cholesterol and three-ring salicylaldimine mesogenic cores are interlinked through a flexible even-parity (ω-oxyalkanoyloxy) spacer have been synthesized and characterized by polarising optical microscopy, differential scanning calorimetry, elec…
Results from an experimental study of the local hydrodynamic structure of liquid flow in a 37-cell model simulating a fuel assembly used in the AES-2006 reactor are presented. Special attention is paid to the effect of spacer grid on flow hydrodynamics. Data on variations of the local and integral values of the liquid…
The effect of the surface roughness of a substrate, in particular carbon fibre, on the growth of carbon nanotubes (CNTs) was investigated using floating-catalyst chemical vapour deposition. Carbon fibres (CFs) with four different surface roughness levels were prepared using thermal treatments under an argon and air en…