Materials Literature
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Aluminium sulphide (Al2S3) is predicted to effectively destabilise sodium aluminium hydride (NaAlH4) in a single-step endothermic hydrogen release reaction. The experimental results show unexpectedly complex desorption processes and a range of new sulphur containing hydrogen storage materials have been observed. The N…
Electronic structures, magnetic properties and electron conductivities of linearly aligned one-dimensional (1-D) Ni(II)3, Ni(II)5 and Ni(II)7 complexes, i.e. [Ni3(dpa)4NCS2], [Ni5(tpda)4X2] (X = Cl, CN, N3, NCS) and [Ni7(teptra)4Cl2], are systematically investigated by the broken-symmetry B3LYP calculations and simula…
Polymethylmethacrylate (PMMA) bone cement is a polymeric material that is widely used as a structural orthopedic material. However, it is not an ideal material for bone grafting due to its fragility. Carbon nanotubes (CNTs) have been introduced in order to reinforce PMMA resulting in a composite material which exhibit…
NMR spectroscopy is rarely utilized when analytes include paramagnetic ions. We show that multinuclear solid-state NMR is actually potentially useful for investigating nanostructures of a layered double hydroxide (LDH) containing paramagnetic Ni2+ cations. In particular, 13C NMR spectra of interlayer carbonate anions…
During the past decade, an abundance of semiconductor nanocrystals, also named quantum dots (QDs), have been developed attributed to their unique physical and chemical properties, with size-tunable light emission, high photostability, and multiple fluorescence colors. Recently, the synthesis of doped semiconductor nan…
Room-temperature ferromagnetism (RTFM) has been achieved in rare earth (RE) element doped ZnO nanostructures, while the mechanism of RTFM is still under debate. In this work, we investigated the electronic structure and magnetic properties of Nd-doped ZnO nanowires, and the influence of oxygen vacancies by using ab in…
Supercritical carbon dioxide (scCO2) treatments of a montmorillonite (MMT) intercalated with ammonium cations bearing two long hydrocarbon tails (organo-modified MMT, OMMT) led to OMMT exfoliation, with loss of the long-range order in the packing of the hydrocarbon tails and maintenance of the long-range order in the…
Investigations were carried out, on the effect of addition of kaolinite (2Al 2 O 3 ·3SiO 2 ·2H 2 O) and talc (Mg 3 Si 4 O 10 (OH) 2 ) in terms of bulk density, XRD phases, microstructure, as well as thermal and mechanical properties of the aluminium titanate (AT) ceramics. AT ceramics with additives have shown enhance…
This report describes the synthesis and characterization of amphiphilic block-copoly(3-alkylthiophene)s with one hydrophobic and one hydrophilic block. Implementation of a chiral center in one of the two blocks enables a chiroptical evaluation of the materials in different media. Depending on the solvent conditions, p…
Coumarin-functionalized cellulose sheets were chemically modified using a visible light catalyzed "Photo-Meerwein" arylation. Use of a photomask to pattern the surface resulted in directly visible images.
We have investigated the occurrence of hydrogen bonding in boron subphthalocyanine (BsubPc) derivatives by synthesizing a series of four hydroxy-containing BsubPcs and studying their solid state arrangements using X-ray diffraction. The series of derivatives comprises hydroxy-BsubPc (HO-BsubPc) as well as para-, meta-…
Magnetic iron–conducting polymer–palladium ternary nanocomposite microspheres were synthesized in a one-pot, single step process via aqueous chemical oxidative polymerization. These microspheres functioned as an efficient catalyst for the Suzuki–Miyaura cross-coupling reaction and can be readily recycled using only a…
We studied the conformational and self-assembly properties of de novo peptides derived from the structure of the yeast transcriptional activator GCN4 in solution and on surfaces. We showed how the pH and the polarity of the solvent directed peptide conformation and assembly. The peptides self-assembled into a coiled c…
The evolution and magnetic behaviour of NiO-Ni(OH)2 core-shell nanostructures with different thicknesses of the hydroxide shell have been studied. The nickel hydroxide shell is found to alter the magnetic characteristics of nickel oxide at low temperatures and explains the origin of the exchange bias effect due to the…
The core loss of grain oriented electrical steel can be improved by an additional treatment process. For the industrial utilization, the CO2 or Nd:YAG lasers are most widely used for laser scribing with typical core loss improvements of about 10%. In this work, a high power CO2 laser and fiber laser up to 4 kW laser p…
Structural changes in liquids between Al2O3 and Y2O3 are investigated as a function of the composition and during supercooling using high energy X-ray diffraction (HEXRD) techniques combined with containerless aerodynamic levitation. Many-body molecular dynamics simulation techniques utilizing potential models that in…
The development of nanotechnology for advances in various sectors like health, consumer products has paved way for possible applications in agriculture and food industries. Antimicrobial agents (e.g., silver, titanium dioxide), nano-bio pesticides (hydrophobic silica), smart delivery systems (polymeric nanoparticles)…
In this paper, we used a high pressure benzene-thermal method to successfully prepare novel BN porous-hollow nanorods. Herein, thiophene is introduced as a catalyst to eliminate the benzene carbonization at high temperature. The alveolate porous wall of the nanorods is stacked up by small nanoflakes aligned vertically…
Ta oxide nanotubes (NTs) were formed by the anodization of Ta at 15 V in a solution of concentrated sulfuric acid containing 0.8-1.0 M hydrofluoric acid. To study the initial stages of NT formation, FESEM images of samples anodized for very short times were obtained. The results contradict the existing explanation of…
We study the analogy between the linear elasticity theory equations and classical Maxwell equation with chiral effects and we propose a new method of an earthquake-resistant design to support conventional aseismic designs using acoustic metamaterials. We suggest a simple and practical method to reduce the amplitude of…