Materials Literature
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The frictional and wear performance of a machined component depends strongly on the surface properties. A white layer on the machining surface is often produced at abusive machining conditions. However, the effect of white layer on frictional and wear performance has received little attention. Dry and lubricated slidi…
In this work, we report on a new type of superhydrophobic material consisting of supported organic nanowires prepared by vacuum deposition. Different intensely colored surfaces with water contact angles as high as 180 degrees can be fabricated depending on the composition, morphology, and density of the nanowires. The…
The achiral compound 2-(2-naphthylthio or 2-quinolinethio)-3-methylcyclohexen-1-one was found to crystallize in the chiral space group P212121. In one crystal, only one-handedness was found. In particular, although 2-(2-naphthylthio)-3-methylcyclohexen-1-one showed conformational polymorphism, both polymorphs were chi…
The calculations of local and global properties of two-band superconductors have been presented with particular attention paid to the role of the interorbital scattering of pairs. The properties of such superconductors are very different from a single-band or typical two-band systems with dominant intraband pairing in…
The effect of OH - ions on the branching growth of cuprous oxide microcrystals was systematically studied by a reduction route, where copper-citrate complexes were reduced by glucose under alkaline conditions. Different copper salts including Cu ( NO 3 ) 2 , CuCl 2 , CuSO 4 , and Cu ( Ac ) 2 were used in this work. Th…
Abstract Electrospinning is used to produce micro‐ and nano‐sized synthetic fibers through the use of electrostatic forces. Commercially, viable production of fibers requires high throughput of uniform fibers that are free of defects. To achieve greater control over the process variables that affect the fiber formatio…
The object of this study was to investigate the thermal stability and degradation kinetics of polysiloxane material used as lubricant in the die casting process of aluminium alloys. The degradation of dried polysiloxane emulsion was studied by thermal gravimetric analysis (TGA) using nitrogen atmosphere. Several non-i…
Thin crystals of rutile, brookite, anatase, and cassiterite were irradiated in situ in the transmission electron microscope using 1.0 MeV Kr ions at 50-300 K. Synthetic rutile and natural cassiterite, with 0.1-0.2 wt% impurities, remain crystalline up to a fluence of 5 × 10 15 ions cm -2 without evidence for amorphiza…
The immobilisation of proteins on to nanoparticles has a number of applications ranging from biocatalysis through to cellular delivery of biopharmaceuticals. Here we describe a phosphopantetheinyl transferase (Sfp)-catalysed method for immobilising proteins bearing a small 12-mer "ybbR" tag on to nanoparticles functio…
A supramolecular thiophene host system showing solid-state fluorescence has been prepared by using chiral (1 R,2 S )-2-amino-1,2-diphenylethanol and two basic types of thiophene acid derivatives. This host system has a chiral 2 1 -helical columnar structure and channel-like cavities formed by the self-assembly of 2 1…
Nanoporous Pd (np-Pd) was prepared by co-sputtering Pd-Ni alloy films onto Si substrates, followed by chemical dealloying with sulfuric acid. X-ray diffractometry and chemical analysis were used to track the extent of dealloying. The np-Pd structure was changed from particle-like to sponge-like by diluting the sulfuri…
Abstract In this paper we discuss the constitutive relations for micropolar plates recently obtained by Altenbach and Eremeyev. We pay particular attention to their relation for the resultant drilling stress couple and compare it with that used so far in the statically and kinematically exact nonlinear six‐parameter s…
A variety of supramolecular complexes were formed by associating an electron donor-substituted flavin dyad (10-[4′-(N,N-dimethylamino)phenyl]isoalloxazine: DMA–Fl) and a family of fullerene derivatives that contain single and double hydrogen bond receptors (SRC60 and DRC60). The stoichiometry of the corresponding comp…
Here we describe a simple yet efficient gel-matrix-assisted preparation method that improves synthetic control over the interface between inorganic nanomaterials and biopolymers and yields stable biofunctionalized silver nanoparticles. Covalent functionalization of the noble metal surface is aided by the confinement o…
Directed assembly of nanostructures within temporary and recyclable self-assembled scaffolds is emerging as an attractive method for the synthesis of nanomaterials with programmed properties. Understanding interactions of building blocks with amphiphilic scaffolds is critical for rational design of new nanostructures…
Abstract Nanoparticles can be used as fillers to reinforce polymers, forming nanocomposites with better thermomechanical properties than composites with macrosized fillers. Furthermore, the addition of nanoparticles may influence the curing behavior of the polymer matrix during processing. In this study, the effect of…
Some efficient methods have been developed to chemically prepare some magnesium salt products with multiscale morphologies such as MgCO 3 ·3 H 2 O and 5 Mg ( OH ) 2 · MgSO 4 ·2 H 2 O whiskers, Mg 5 ( CO 3 ) 4 ( OH ) 2 ·4 H 2 O microplates and aggregates, and Mg ( OH ) 2 plates and spheres. The crystallization processe…
Advances in recent nanoscience technologies have generated a new compilation of fluorescent biolabels derived from semiconductor quantum dots (QDs). Due to their properties of being water-soluble and biocompatible, these nanometer-sized probes prove to be a beneficial tool for biolabeling and bioimaging. We report on…
Biotechnological treatment of pulps provides great potential for the reduction of energy consumption and greenhouse gas emissions.In the present work, the influence of different commercial cellulases and xylanases or their mixtures on the quality of different bleached kraft pulps was investigated.The effects of enzyme…
Cluster control: Highly stable, monodisperse, water-soluble gold nanoparticles with high X-ray attenuation have been prepared by controlling the reaction kinetics for the formation and growth of the gold nuclei by a green single-phase method (see figure). The process developed can produce high-quality gold nanoparticl…