Materials Literature
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The role of microstructure in affecting the fatigue crack growth resistance of grain bridging silicon nitride ceramics doped with rare earth ( RE = Y , La , Lu ) oxide sintering additives was investigated. Three silicon nitride ceramics were prepared using MgO ‐ RE 2 O 3 and results were compared with a commercial Al…
Nanocomposites of polyaniline and zinc oxide nanoparticles using polycarbonate as supporting matrix were prepared by direct mixing process. These nanocomposites were studied for their DC electrical conductivity using four-in-line probe technique. Stability of DC electrical conductivity in terms of electrical conductiv…
Abstract We synthesized the Pr3+‐doped Bi2O3‐Sb2O3‐B2O3glass phosphor and the Sm3+‐doped CaO‐Sb2O3‐B2O3glass phosphor in order to fabricate a wideband luminescence. The luminescence bands of the Pr3+‐doped glass phosphor were from 760 nm to 910 nm and from 920 nm to 1100 nm. The luminescence bands of the Sm3+‐doped gl…
Three derivatives of thieno[3,2-b]thiophene end-capped with phenyl units have been synthesized and characterized by MALDI TOF mass spectroscopy, elemental analysis, UV-vis absorption spectroscopy and thermogravimetric analysis (TGA). All compounds were prepared using Pd-catalyzed Stille or Suzuki coupling reactions. O…
We investigate the signature of the low-energy electronic excitations in the Raman spectrum of monolayer and bilayer graphenes. The dominant contribution to the Raman spectra is due to the interband electron–hole (e–h) pairs, which belong to the irreducible representation A 2 of the point group C 6v of the graphene la…
This theoretical study was motivated by recent experiments and theoretical work that had suggested the dependence of the static contact angle on the local wetting at the triple-phase contact line. We revisit this topic because the static contact angle as a local wetting parameter is still not widely understood and cle…
Polyelectrolytes are ubiquitous materials, and their unique properties originate from dissociation of ionic groups to the small number of macromolecular ions and the large number of small counterions. They have been exploited only in water or high-dielectric media and scarcely in nonpolar ones (ε < 10). Herein, we dem…
The effect of the static magnetic moments of iron on electron-phonon interactions in layered FeSe and KFe${}_{2}$Se${}_{2}$ is studied. First-principles techniques based on the pseudopotential density functional approach and the local spin density approximation are utilized to calculate the band structures, phonon dis…
The control of surface properties is a substantial step in the development and improvement of biomaterials for clinical applications as well as for their use in tissue engineering. Interaction of the substrate surface with the biochemical or biological environment is crucial for the outcome of the applied biomaterial…
Understanding the fundamental properties of materials of relevance for alternative energy technologies is crucial in addressing the global challenge of cleaner sources of energy. This Perspective article aims to demonstrate the important role that neutron scattering now plays in advancing the state of the art of the b…
By employing molecular dynamics (MD) simulations based on empirical potentials and density functional theory, we demonstrate that the electronic properties of bilayer graphene could be tailored by means of low-energy ion irradiations. We first performed MD simulations to investigate the doping and intercalation effect…
In this work, Manganese ferrite nanoparticles of various compositions were reproducibly synthesized via coprecipitation route. Variation in structural and dielectric properties was studied by varying the sintering temperature, sintering time and manganese to iron ratio. Structural, compositional and phase properties w…
We show that certain three-dimensional (3D) superlattice nanostructure based on Bi2Te3 topological insulator thin films has better thermoelectric performance than two-dimensional (2D) thin films. The 3D superlattice shows a predicted peak value of ZT of approximately 6 for gapped surface states at room temperature and…
In addition to a number of applications of nanofibres in technical fields such as medical, filtration and biosensing, nanofibres are recently being widely explored in terms of apparel use. Past work has focused on the functional properties of nanofibres for apparel use. Coloured nanofibres were produced to investigate…
The role of crystallographic orientation on damage evolution in ductile metals during shock loading has been investigated. By utilizing large-grained copper specimens, it has been shown that the development of intragranular damage, in the form of void growth and coalescence, is influenced by the grain orientation with…
The cellular internalization of defined PMMA nanoparticles was investigated. For this purpose, the biocompatible copolymer p(MMA-stat-MAA)0.91:0.09 was synthesized by RAFT polymerization and labeled with three different fluorescent dyes (λEx = 493, 557, and 653 nm). Nanoparticles were formulated from the differently l…
The effect of high doping levels of manganese ( Mn ) on the structure and electrical properties of ( K x Na 1− x ) NbO 3 ( KNN ) ceramics containing Li , Ta , and Sb has been investigated. The samples were measured using synchrotron X‐ray diffraction whereas Rietveld refinement with Fullprof was used to determine the…
A combinatorial approach was developed for the rapid determination of thermochromic behavior of a large number of binary and ternary sterol based thermochromic liquid crystalline formulations. A binary mixture containing cholesteryl oleyl carbonate and cholesteryl nonanoate, and ternary mixtures also containing a thir…
Abstract We demonstrate the growth of Be x Zn1−x O alloy thin films on c-sapphire substrates by plasma-assisted molecular beam epitaxy. The formation of Be x Zn1−x O is very sensitive to the Be content in the alloy. Be atoms occupy the Zn lattice sites at low Be content, but move partly to the interstitial sites with…
A series of chalcogenide glasses based on Ge 16.5 Ga 3 As 16 Se 64.5 (at.%), doped nominally with 0, 1000, 3000, and 6000 ppmw (by weight) of Dy foil, is prepared by using conventional method: melting inside a sealed silica glass ampoule, which is rocked to homogenize the melt, followed by melt quenching and annealing…