Materials Literature
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The yttria-stabilized zirconia (YSZ) nanocrystals with uniform size, high purity, and high degree of crystallinity, were prepared by ultrasonic–microwave-assisted method. The structure, optical properties and morphologies of YSZ nanocrystals were characterized by X-ray powder diffraction (XRD), Raman spectroscopy, UV–…
Abstract Controlled nitrocarburizing experiments were performed at 823 K and 853 K in order to systematically investigate the influence of the chemical potentials of carbon and nitrogen imposed by NH 3 /H 2 /CO/CO 2 /H 2 O-containing gas mixtures on the microstructural and compositional evolution of the compound layer…
Liposomes have found clinical application in cancer therapy in the delivery of cytostatic agents. As a result of the targeted delivery of these toxic molecules to the tumour cells coupled to avoidance of toxicity-sensitive tissues, the therapeutic window is widened. Over the past years the focus of cancer therapy has…
Abstract To overcome the deficiency of mean field method in introducing the intramolecular cyclization and the steric effects, the reactive bond fluctuation model was applied to study nonideal hyperbranched A 2 + B 3 polycondensation, which has high sensitivity of gelation to the concentration of monomers, the feed ra…
We calculate the spontaneous volume magnetostriction and exchange interaction in C15 Laves-phase $({\text{Zr}}_{1\ensuremath{-}x}{\text{Nb}}_{x}){\text{Fe}}_{2}$ alloys, which exhibit a distinctive Invar-type anomaly in their thermal expansion. Our first-principles study is based on the disordered local-moment approxi…
Certain regularities in the influence of redox treatments on the structure and properties of manganites of the chosen system were established. It was found that a semiconductor-metal phase transition occurs as a result of annealing manganites in oxygen and is accompanied by a sharp increase in the magnetization and Cu…
We use the Wiener-Hopf method to obtain exact solutions of plane deformation problems for an elastic wedge whose lateral sides are stress free and which has rectilinear cracks on its axis of symmetry. In problem 1, a finite crack issues from the wedge apex edge; in problem 2, a half-infinite crack originates at a cert…
The objective of this paper is to understand through parametric studies the effect of microstructural parameters, viz., the carbon nanotube (CNT) orientation with respect to the cutting direction, CNT loading, and level of dispersion within the matrix on the machinability of aligned CNT composites. To this end, a micr…
Adsorption isotherms of potential-determining H+ and OH− ions and the pH dependences of the specific surface charge of detonation nanodiamond (DND) particles are obtained in a pH range of 3–10 by the acid-base titration of their hydrosols containing 0.001–1 M LiCl, NaCl, KCl, NaNO3, KNO3, and NaClO4 as background elec…
A sensing principle, operating regime, and composition range are identified for force sensing with Galfenol alloys. Magnetization measurements of Fe79.1Ga20.9 and Fe81.6Ga18.4 are performed under applied magnetic field at constant stress. Stress-dependent, linear regions with negligible hysteresis are observed in the…
The morphology of the coir fiber by alkali treatment and untreated was analyzed by scanning electron microscope (SEM). The main component of wax layer on coir fiber surface and the mechanical performance of coir fiber/line low density polyethylene (LLDPE) bio-composites were studied. The flexural and impact strength o…
Abstract Disposal facilities in deep geological formations are considered to be a possible solution for long-term management of high-level nuclear waste (HLW). The design of the repository generally consists of a multiple-barrier system including Fe-based canisters and a clay backfill material. The Fe-clay system will…
A sandwich composite consisting of one layer of ferromagnetic shape memory Ni-Mn-Ga crystal plate bonded between two layers of piezoelectric PVDF polymer film was fabricated, and its magnetic field-induced strain (MFIS) and magnetoelectric (ME) effects were investigated, together with a monolithic Ni-Mn-Ga crystal, as…
The electrical properties of TlGaSe2 ferroelectric-semiconductor with layer crystalline structure in the direction parallel to the layers plane is studied by impedance spectroscopy in the frequency range 30 Hz–15 MHz. The impedance spectra were analyzed together with earlier results for perpendicular direction. Low fr…
The possibility of the giant enhancement of hyper-Raman scattering by molecules adsorbed on rough metal surfaces is demonstrated. The theory is based on the qualitative consideration of electromagnetic field enhancement near some model rough surfaces and individual irregularities, as well as on the quantum-mechanical…
This work reports the efforts to obtain TiFe intermetallic compound by high-energy ball milling of Ti and Fe powder mixtures. This process route has been used to provide a better hydrogen intake in this compound. Milling was carried out in a SPEX mill at different times. Strong adherence of material at the vial walls…
A detailed description, based on the literature, of the dependence of the foaming process on the type of applied polymeric materials with special reference to polyolefins (PE and PP) was initially presented in the introductory section of this paper. The scope of the work involved comparative studies on the foaming pro…
Abstract Anode‐supported SOFC was fabricated using gadolinia doped ceria (GDC) as the electrolyte (15 μm of thickness), Ni‐GDC as the anode and La 0.5 Sr 0.5 CoO 3 – δ ‐GDC as the cathode. Catalytic activities of the electrodes and electrical properties of the cell were determined, using mixtures of methane + air, und…
Abstract Summary : Three zinc guanidine‐pyridine hybrid complexes [Zn(TMGqu) 2 (CH 3 SO 3 )][CH 3 SO 3 ] ( 1 ), [Zn(DMEGqu)(CH 3 SO 3 ) 2 ] ( 2 ) and [Zn(DMEGqu) 2 (CH 3 SO 3 )][CH 3 SO 3 ] ( 3 ) were synthesised, completely characterised and investigated on their activity in the solvent‐free ring‐opening polymerisati…
A facile strategy to graft polymers onto the surfaces of multiwalled carbon nanotubes (MWCNTs) was developed via the free radical addition process in the solution radical polymerisation of styrene in presence of the MWCNTs without any pretreatment so that the length of the original MWCNTs remained unchanged. The polys…