Materials Literature
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Oil was extracted from the seed of Baphia nitida, characterised and used in the production of diethanolamide and epoxidised diethanolamide via transamidation reaction. The oil of B. nitida had C18:2 (50.00 ± 0.20%) fatty acid as the most abundant fatty acid. The epoxidised diethanolamide was synthesised by peroxyformi…
Typical multicopper oxidases (MCOs) have ten conserved histidines and one conserved cysteine that coordinate four copper atoms. These copper ions are required for oxidase activity. During our studies of insect MCOs, we discovered a gene that we named multicopper oxidase-related protein (MCORP). MCORPs share sequence s…
We now describe the synthesis of a new family of oligosaccharide-conjugated functional molecules, which act as chain transfer agents (CTAs) for the reversible addition-fragmentation chain transfer (RAFT) polymerization. The synthesis was started from the catalyst-free direct N-glycosyl reaction of 5-azidopentylamine o…
A three-dimensional phase-field model was developed to simulate and predict crack propagations caused by local variations of solute concentrations. Its application to the electrolyte-LiFePO4 cathode nanoparticle system in Li-ion batteries captures the Li chemical reaction-intercalation-induced crack propagation during…
Bamboo-like CoCu/Cu multilayer nanowires have been successfully fabricated into anodic aluminium oxide templates using an electrodeposition method, and their basic morphological, chemical, structural information and magnetic reversal mechanism have been highlighted.
WC-based cermet coatings have been considered as alternative replacements to the more traditional hard chrome plating for improved surface properties. Though these coatings are used in engineering applications requiring superior hardness and improved wear resistance, little is known about their corrosion resistance. I…
A variety of cathode materials in lithium ion batteries exhibit phase separations during electrochemical reactions, where two phases with different Li compositions are in equilibrium across the phase interface. Because of the lattice mismatch between these phases, large structural distortions are introduced around the…
We employ positron annihilation lifetime spectroscopy (PALS) to measure the temperature dependent fluctuations in a local free volume of water confined in a variety of mesoporous materials with different pore sizes and morphologies.We demonstrate that this unconventional approach can be used to probe the dynamics and…
Ozone bleaching generates carbonyl groups on the cellulose polymer when applied to unbleached kraft pulps. This suggests that pulp fully bleached with a totally chlorine-free (TCF) sequence may contain more oxidized groups than standard elemental chlorine-free (ECF) bleached pulp. A fully bleached pulp was treated wit…
This paper presents a statistical method to analyze instabilities that can be introduced during imaging in scanning electron microscopy (SEM). The method is based on the correlation of digital images and it can be used at different length scales. It consists of the evaluation of three different approaches with four pa…
The electric field effect on ferromagnetism offers a new dimension in the recent advancement of spintronics. We report on the gate control of transport properties in thin films of oxide-based ferromagnetic metal, SrRuO3. An electric double layer transistor configuration was utilized with an ionic liquid dielectric to…
Focused electron beam induced deposition as a direct-write approach possesses great potential to meet the demands for superconducting nanostructure fabrication especially regarding its 3D patterning capabilities combined with the high resolution in the nanometer regime. So far, however, it was not possible to fabricat…
ABSTRACT A series of copolymers, poly(acrylamide)‐co‐poly(N,N‐dimethylaminoethyl methacrylate)‐co‐poly(N‐cetyl DMAEMA) (abbreviation PDAMCn), was synthesized with different monomer ratios. The resulting copolymer solution shows pronounced viscosity–response property which is CO2‐triggered and N2‐enabled. Electrical co…
A new silica gel material covalently bonded with 1-(furan-2-yl) imine (SiNFn) was synthesized and well characterized by elemental analysis, FT-IR, 13C NMR of the solid state, nitrogen adsorption-desorption isotherm, BET surface area, B.J.H. pore sizes, thermogravimetry analyzer (TGA) curves, and scanning electron micr…
A heterogeneous reaction mechanism based on elementary reaction steps is proposed for the prediction of pyrolytic carbon deposition in chemical vapor infiltration, involving 72 surface species and 277 surface elementary reactions. A “prototype” gas-phase reaction is chosen to match with the corresponding surface react…
High-performance organic field-effect transistor nonvolatile memories have been achieved using sputtered C nanoparticles as the nano-floating-gate. The sputtered C nano-floating-gate is prepared with low-cost material and simple process, forming uniform and discrete charge trapping sites covered by a smooth and comple…
Based on the H2O2-mediated generation of gold nanoparticles, a colorimetric catalase nanosensor was developed and utilized as a signal output in a catalase-labelled immunoassay. Methyltestosterone (MT), which is used illegally as a growth promoter during the cattle production cycle, was selected as a small molecule mo…
Photocatalysis using semiconductor oxides was being investigated extensively for the degradation of dyes in effluent water. This paper reports our findings on visible light induced photocatalytic degradation of azo dye, methyl red mediated nitrogen and manganese codoped nano-titanium dioxide (N/Mn-TiO2). The codoped s…
Global kinetic models combined with Monte Carlo sheath models are developed for SF 6 and C 4 F 8 plasma discharges for silicon etching under the Bosch process. In SF 6 plasma, the dominant positive ions are , , and F + while in C 4 F 8 the dominant positive ions are and . The simulation results show that the electrica…
ABSTRACT Lysine‐based polypeptides can be afforded with steerable secondary structures and tunable thermoresponsiveness through dynamic covalent OEGylation. These polypeptides were formed through dynamic imine linkage via reactions of amino moieties from poly(l‐lysine)s with aldehydes from oligoethylene glycol (OEG)‐b…