Materials Literature
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Polyaniline (PANI)/multiwalled carbon nanotube (MWNT) composites with a uniform tubular structure were prepared from in situ polymerization by dissolving amino‐functionalized MWNT (a‐MWNT) in aniline monomer. For this the oxidized multiwalled nanotube was functionalized with ethylenediamine, which provided ethylenedia…
Transient absorption (TA) and photoluminescence excitation (PLE) anisotropy measurements were used to investigate the polarization of band-edge and above-band-edge excitonic states in ensembles of CdSe nanocrystals with aspect ratios of 1:1, 3:1, and 10:1, dispersed in hexanes. The 1:1 nanocrystals (quantum dots) are…
Pb0.97Ln0.02(Zr0.63Sn0.26Ti0.11)O3 ceramics with large electrically induced strain were fabricated by doping the base composition with rare earth ions. The enhancement of strain was because the substitution of rare earth ions for Pb2+ could decrease the tolerance factor of the ceramics and improve the stability of ant…
A surfactant-assisted ball milling technique was employed to synthesize NdFeB nanoparticles and nanoflakes from melt-spun nanocrystalline powders. The microstructure evolution during ball milling and the particle size dependent magnetic properties were investigated. The formation mechanism of submicrometre flakes and…
We investigated the thermoelectric properties of the InSe, InSe/In4Se3 composite, and SrTiO3 (STO) nano-particles dispersed InSe/In4Se3 bulk composites. The electrical conductivity of the InSe/In4Se3 composite with self-assembled phase separation is significantly increased compared with those of InSe and In4Se3–δ impl…
The influence of dispersoids on tensile deformation behaviour has been studied by comparison of aluminium alloys containing different dispersoid densities. It was found that a fine dispersion of non-shearable particles led to an increased work hardening at the initial plastic deformation, but the effect was opposite a…
Abstract Understanding the dynamic evolution of structural changes in catalysts at the atomic level under controlled reaction conditions is one of the most challenging areas in heterogeneous catalysis. Here we present aberration‐corrected environmental TEM at the atomic level and electron diffraction of the reduction…
The surface science approach of using model catalysts in conjunction with the development of in situ spectroscopic tools, such as ambient pressure X-ray photoelectron spectroscopy (AP-XPS), offers a synergistic strategy for obtaining a substantially better understanding of deactivation phenomena. In this study, we inv…
We have theoretically investigated the magnetic response of two-dimensional (2D) arrays of superconducting and soft magnetic strips, which are regarded as models of dc magnetic metamaterials. The anisotropy of the macroscopic permeabilities depends on whether the applied magnetic field is parallel to the wide surface…
Diarylcarbenes have been shown to be suitable for the surface modification of a diverse range of polymers, including low surface energy materials, and this allows the modification of surface macroscopic effects, exemplified by changes in wetting behaviour, pH sensing, and bactericidal activity.
Fabrication of one-dimensional arrays of crystalline nanoparticles with tunable particle size and spacing (down to 20 nm) is demonstrated. The individual nanocrystals are pentagonal prisms, and the arrays are up to 11 μm in length, with some arrays containing >50 nanocrystals. Precise particle morphology and interpart…
A comparison set of mono-/biradical TEMPO derivatives was prepared, novel compounds were fully characterized, and their physicochemical properties were determined. Cyclic voltammetry revealed reversible redox behavior for all studied nitroxides. Moreover, the electron-withdrawing substituents increased the oxidation p…
The temperature and concentration dependencies of viscosity (v) of liquid alloys of binary Al–Ni and Al–Co systems, with the Al content of more than 90 at.% have been studied (from here on the alloying element concentration is given in at.%). It has been found that the viscosity polytherms of the melts containing 2.7%…
We demonstrate grafting of nitroxide radicals on the surface of nanodiamonds (NDs). The surface of NDs is functionalized by azide groups. Nitroxide radicals are covalently bonded using Cu(I)-catalyzed azide/alkyne-click chemistry approach. The reaction is confirmed by infrared spectroscopy. The grafting of nitroxides…
The converse magnetoelectric effect is studied by voltage tuning of magnetic resonance in a bilayer of (111) yttrium iron garnet (YIG) film and polycrystalline lead zirconate titanate (PZT) when the YIG film is in a multi-domain state or under magnetic saturation. The application of a DC voltage across PZT manifests a…
Although the most commonly reported low molecular weight hydrogelators (LMWG) are based on the strong and highly directional hydrogen bond between polar groups, the expansion of novel species of LMWG is quite necessary to fulfill different requirements of practical applications. Herein, we demonstrated that using an i…
Hierarchical rose-flower-like CeO2 nanostructures were formed by using solvothermal and thermal annealing processes. The CeCO3OH thin film was transformed into CeO2 roses due to thermal annealing. CeO2 nanostructured roses exhibited excellent photocatalytic activity with a degradation rate of 65% for the azo dye acid…
This work reports the effect of dye on the photopolymerisation and electro-optical properties of polymer dispersed liquid crystal (PDLC) composite films. Dichroic PDLC (DPDLC) films based on a photocurable polymer and nematic liquid crystal (LC) with an azo dichroic dye were prepared by photopolymerisation-induced pha…
Saturated electroluminescence behavior was observed in single ZnO micro/nanowire and GaN film heterojunctions fabricated by transferring an individual ZnO micro/nanowire onto p-type GaN substrate. A strong blue emission of ∼460 nm was observed, as a result of interfacial radiative recombination of electrons from n-ZnO…
We report buckling-driven delamination of carbon nanotube (CNT) forests from their growth substrates when subjected to compression. Macroscale compression experiments reveal local delamination at the CNT forest-substrate interface. Results of microscale flat punch indentations indicate that enhanced CNT interlocking a…