Materials Literature
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Stress corrosion cracking (SCC) of carbon steel has been observed in fuel-grade ethanol (FGE, C2H5OH). Electrochemical behavior of carbon steel and therefore the role of localized corrosion in SCC has not been studied adequately because of the difficulty in performing electrochemical experiments in resistive environme…
Abstract Fabrication of porous silicon layers using the electrochemical technique followed by filling the nanopores with a group of conducting polymers is investigated. Our findings revealed that the deposition of polymer proceeds homogeneously inside the nanopores strating from the pore bottom and propagates into the…
A series of strontium barium niobate‐based B 2 O 3 system glass–ceramics have been prepared by conventional melting and heat‐treated crystallization method. The effect of BaF 2 addition in nucleation and crystallization kinetics has been explored for dielectric applications. BaF 2 addition decreased the activation ene…
Although representing a 'thermodynamic sink', the octahedral oxozirconium {Zr(6)O(4)(OH)(4)} cluster structure can be magnetically functionalized by up to six 3d metal cations with a combination of flexible aminoalkoxide and carboxylate ligands.
We report a femtosecond transient absorption spectroscopic study on the (6, 5) single-walled carbon nanotubes and the (7, 5) inner tubes of a dominant double-walled carbon nanotube species. We found that the dynamics of exciton relaxation probed at the first transition-allowed state (E(11)) of a given tube type exhibi…
A series of NaCu 3 Ti 3 SbO 12 ceramics were prepared by the conventional solid‐state reaction technique under different sintering temperature conditions. Their crystalline structure, microstructure, dielectric properties, and complex impedance were systematically investigated. It has been found that they are in gener…
Abstract We report on a novel approach to synthesize hybrid nanostructures of meso porous silicon and conjugated organic polymers that are suitable for solar cell applications. Meso‐porous silicon substrates with relatively large pores (∼100 nm) have been exploited for electrochemical polymerization of organic monomer…
Six new novel alkaline-earth metal vanadium(V) or vanadium(IV) selenites and tellurites, namely, Sr(2)(VO)(3)(SeO(3))(5), Sr(V(2)O(5))(TeO(3)), Sr(2)(V(2)O(5))(2)(TeO(3))(2)(H(2)O), Ba(3)(VO(2))(2)(SeO(3))(4), Ba(2)(VO(3))Te(4)O(9)(OH), and Ba(2)V(2)O(5)(Te(2)O(6)), have been prepared and structurally characterized by…
Abstract In this work, Ag nanoparticles (NPs) were deposited on patterned TiO 2 nanotube films through pulse‐current (PC) electrodeposition, and as a result patterned Ag NPs films were achieved. Scanning electron microscopy (SEM), electron probe microanalysis (EPMA), and X‐ray diffraction (XRD) were used, respectively…
The surfactant-assisted seed-mediated growth method was used for the formation of gold nanorods (GNRs) directly on gold (Au) and indium tin oxide (ITO) surfaces. Citrate-stabilized ∼2.6 nm spherical gold nanoparticles (AuNPs) were first self-assembled on ITO or Au surfaces modified with (3-mercaptopropyl)-trimethoxysi…
High strain rate measurements reported recently for several tantalum and copper crystal/polycrystal materials are shown to follow dislocation mechanics-based constitutive relations, first at lower strain rates, for dislocation velocity control of the imposed plastic deformations and, then at higher rates, transitionin…
We report the low-temperature growth of vertically aligned carbon nanotubes (CNTs) at high growth rates by a photo-thermal chemical vapour deposition (PTCVD) technique using a Ti/Fe bilayer film as the catalyst. The bulk growth temperature of the substrate is as low as 370 °C and the growth rate is up to 1.3 µm min(-1…
As noble metal nanoparticles are deployed into increasingly sophisticated environments, it is necessary to fully develop our understanding of nanoparticle behavior and the corresponding instrument responses. In this paper, we report on the optical response of three important gold nanorod configurations under dark fiel…
A nanoparticle magnetic resonance imaging (MRI) contrast agent targeted to liver was developed by conjugation of gadolinium (Gd) chelate groups onto the biocompatible poly(l-lactide)-block-poly (ethylene glycol) (PLA-PEG) nanoparticles. PLA-PEG conjugated with diethylenetriaminopentaacetic acid (DTPA) was used to form…
We demonstrate a light emitting p-i-n diode made of a highly aligned film of separated (99%) semiconducting carbon nanotubes, self-assembled from solution. By using a split gate technique, we create p- and n-doped regions in the nanotube film that are separated by a micron-wide gap. We inject p- and n-type charge carr…
Abstract The effect of time (or corrosion products formation) on corrosion rate of carbon steel pipe in aerated 0.1 N NaCl solution under turbulent flow conditions was investigated. Tests were conducted using electrochemical polarisation technique by determining the limiting current density of oxygen reduction in Reyn…
In this paper we present the development and performance of a three-dimensional phase field dislocation dynamics (3D PFDD) model for large-scale dislocation-mediated plastic deformation on high-performance architectures. Through the parallelization of this algorithm, efficient run times can be achieved for large-scale…
Abstract A series of benzocyclobutene (BCB) polymers derived from a new readily available monomer, 4‐(1′,1′‐dimethyl‐1′‐vinyl) silylbenzocyclobutene (4‐DMVSBCB), were conveniently prepared by radical and anionic polymerization. The homo‐ and co‐polymerization results show that the reactivity of 4‐DMVSBCB in anionic po…
The fabrication, optical characterization, and application of a new generation of ultrasmall multiple-split nanoring antennae is reported. Using electron-beam lithography, splits of ≈6 nm are engineered into silver nanophotonic ring structures to create concentrated areas of localized field coupling, which can be expl…
A near room-temperature martensitic transition is observed in the ferromagnetic austenite state of ${\text{Ni}}_{50}{\text{Mn}}_{34}{\text{In}}_{16}$ alloy with 2% Cu substitution at the Ni site. Application of magnetic field in the martensite state induces a reverse martensitic transition in this alloy. dc magnetizat…