Materials Literature
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Group-III nitrides are considered to be a strategic technology for the development of ultraviolet photodetectors due to their remarkable properties in terms of spectral selectivity, radiation hardness, and noise. The potential advantages of these materials were initially obscured by their large density of intrinsic de…
This paper presents an experimental investigation of a fuel processor consisting of a JP-8 autothermal reforming (ATR) reactor and a surrogate-fed CO-cleanup train. The CO-cleanup train, comprising a water−gas shift (WGS) and two preferential oxidation (PROX) reactors, was tested as an integrated reactor train. A finn…
We have performed spin-polarized calculations of the unexpected ferromagnetism in ultrathin films of molybdenum dioxide $({\text{MoO}}_{2})$ within the framework of density-functional theory. It is found that the ideal bulk ${\text{MoO}}_{2}$ is metallic and nonmagnetic. Bulk ${\text{MoO}}_{2}$ with Mo vacancy, O vaca…
We have investigated the plasmonic enhancement in the radiation field at various nanostructured multilayer devices that may be applied in surface enhanced Raman spectroscopy. We apply an image dipole method to describe the effect of surface morphology on the field enhancement in a quasistatic limit. In particular, we…
We report the preparation of chiral oxygen atom-appended porphyrazines (pzs) as biomedical optical agents that absorb and emit in the near-IR wavelength range. These pzs take the form M[pz(A(4-n)B(n))], where "A" and "B" represent moieties appended to the pz's pyrrole entities, A = (2R,3R) 2,3-dimethyl-2,3-dimethoxy-1…
Abstract The effect of sulfate reducing bacteria (SRB) upon the cathodic protection of XL 52 steel was determined, in order to identify if the potential value of −0.950 V versus copper/copper sulfate electrode is good enough to protect the metal surface. During the experiments, different operational parameters were mo…
In this article the influence of deformation on the coalescence rates of oil-in-water (O/W) emulsions is analyzed. Calculations for doublets and many-particles systems were performed based on a Brownian dynamics algorithm. Extensional and bending energies were included in order to quantify the effect of the changes in…
The effect of Ag addition (0–20 wt%) on polycrystalline Sr 0.6 K 0.4 Fe 2 As 2 superconductor has been investigated. It is found that the critical transition temperature T c was not depressed, and the irreversibility field H irr and hysteresis magnetization were significantly enhanced upon Ag addition. A characterizat…
The effect of microstructural properties on the wave dispersion in linear elastic membranes is addressed in this paper. A periodic spring-mass lattice at the lower level of observation is continualized and a gradient-enriched membrane model is obtained to account for the characteristic microstructural length scale of…
Abstract The inhibitor performance of 5‐aminoindole (5‐AI) on mild steel corrosion in 0.5 M HCl was investigated in relation to the inhibitor concentration using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and linear polarization (LPR) methods. The effect of immersion time on the corros…
Using particle tracking microrheology, we studied the glass transition in dense suspensions of thermosensitive microgel particles. These suspensions can be tuned reversibly between the glass state at low temperature and the liquid state at high temperature. In the glass state, the ensemble averaged mean squared displa…
Abstract Corrosion behaviour of the studied Ti–Ta alloys with Ta contents of 30, 40 and 50 wt% together with the currently used metallic biomaterials commercial pure titanium (Cp–Ti) was investigated for biomedical applications. All the samples were tested by potentiodynamic polarization curves and electrochemical imp…
Ambient temperature adsorption isotherms have been developed for C(2)-C(6) diols and triols on small (FER), medium (MWW, MFI, BEA), and large (MOR, FAU) pore zeolites as well as on ordered mesoporous materials (MCM-36, 3DOm-MFI, and SBA-15) using gravimetry. Henry's constants for diol and triol adsorption on silicalit…
We report the antireflective property of thin film amorphous silicon (a-Si) solar cell structures based on graded refractive index structure together with theoretical analysis. Optimizations of the index profile are performed using the rigorous coupled-wave analysis method. The graded refractive index structure fabric…
The phase stability and elastic properties of Re-B system were systematically investigated by use of the density functional theory. The formation enthalpies are negative for Re(3)B, Re(7)B(3), Re(2)B, ReB, Re(2)B(3), and ReB(2), indicating that they are thermodynamically stable. Re(7)B(3), Re(2)B, ReB, Re(2)B(3), and…
The non-Markovian diffusion of dispersed particles in a semi-infinite cell of an isotropic fluid limited by an adsorbing-desorbing surface is theoretically investigated. The density of dispersed particles in the bulk is a time dependent function and the time dependent density of surface particles is governed by a modi…
Abstract In comparison with 2,1,3‐benzothia(selena)diazoles, electrochemical oxidation and reduction of their 4,5,6,7‐tetrafluoro derivatives and a number of related compounds were studied by cyclic voltammetry. For nine examples of this class, the first reduction peaks are reversible and corresponding radical anions…
We study the transport properties of a graphene ferromagnet-insulator-superconductor (FIS) junction within the Blonder-Tinkham-Klapwijk formalism by solving spin-polarized Dirac-Bogoliubov-de-Gennes equation. In particular, we calculate the spin polarization of tunneling current at the I-S interface and investigate ho…
The ordering dynamics of directed self-assembly of cylinder-forming diblock copolymers is studied by cell dynamics simulations. The directing field, mimicking chemically or topologically patterned substrates, is in the form of hexagonally arranged potential wells attractive to minority blocks. Time evolution of the de…
At the nanoscale, the surface becomes pivotal for the properties of semiconductors due to an increased surface-to-bulk ratio. Surface functionalization is a means to include semiconductor nanocrystals into devices. In this comprehensive experimental study we determine in detail the effect of a single thiol functional…