Materials Literature
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Higher resolution demands for semiconductor lithography may be fulfilled by higher numerical aperture (NA) systems. However, NAs more than the photoresist refractive index (~1.7) cause surface confinement of the image. In this paper we describe how evanescent wave coupling to effective gain medium surface states benea…
Targeted delivery carriers: Magnetic protein microcapsules (MPMCs) as drug carriers for targeted delivery were fabricated by a facile and fast sonochemical method. MPMCs possessed excellent magnetic responsivity and could be readily moved and collected in an external magnetic field due to embedding of Fe3O4 MNPs in th…
The dielectric and MOS interface properties of SiO2 deposited with atomic layer deposition (ALD) on GaN with different surface treatments have been investigated with DC current–voltage (I–V) measurements and UV-assisted capacitance–voltage (C–V) measurements. Dielectric breakdown characteristics and leakage conduction…
Abstract By studying the dynamics of the streamwise pressure gradient at the wavefront of travelling interfacial waves, we investigate the formation and evolution of backflow regions for the sinusoidal and teardrop-shaped surface wave regimes of laminar falling liquid films. The magnitude of the wavefront streamwise p…
ABSTRACT Multiwalled carbon nanotube‐enriched epoxy polymers were prepared by solvent evaporation based on a commercially available epoxy system and functionalized multiwalled carbon nanotubes (COOH–MWCNTs). Three weight ratio configurations (0.05, 0.5, and 1.0 wt %) of COOH–MWCNTs were considered and compared with ne…
Ziadi, N., Gagnon, B. and Nyiraneza, J. 2013. Crop yield and soil fertility as affected by papermill biosolids and liming by-products. Can. J. Soil Sci. 93: 319–328. Papermill biosolids (PB) in combination with alkaline industrial residuals could benefit agricultural soils while diverting these biosolids from landfill…
A series of complex HfO 2 /Al 2 O 3 layer by layer resistive random access memory(RRAM) structure grown by atomic layer deposition are investigated. The modulation of forming voltage can be achieved by controlling the number of Al 2 O 3 layers in HfO 2 devices. In addition, the crystallization temperature of HfO 2 bas…
The phytochemical investigation of Digitalis trojana led to the isolation of two cardiac glycosides (1, 2), one pregnane glycoside (3), three furostanol type saponins (4-6), along with three cleroindicins (7-9), four phenylethanoid glycosides (10-13), two flavonoids (14, 15) and two phenolic acid derivatives (16, 17).…
Abstract Inherent chemical hazards in atomic layer deposition (ALD) processes can be mitigated significantly by careful selection of precursor materials. This work describes the effect of silane (SiH4) exposure on tungsten ALD growth when the silane is heavily diluted (2 at.‐%) in argon. A wide ALD temperature window…
The mechanism of corrosion-induced concrete cover cracking has received greater attention in recent years. Most studies involve accelerated electrochemical techniques to measure the corrosion required to induce concrete cracking. Concrete cylinders with different water/cement ratios exposed to a natural tropical marin…
Spin-flip Raman scattering of electrons and heavy holes is studied for resonant excitation of neutral and charged excitons in a CdTe/Cd${}_{0.63}$Mg${}_{0.37}$Te quantum well. The spin-flip scattering is characterized by its dependence on the incident and scattered light polarization as well as on the magnetic field s…
We have successfully implemented green and red light-emitting diodes (LEDs) based on InGaN/GaN quantum dots (QDs) grown by controlling the process of the growth interruption method using metal organic vapor phase epitaxy (MOVPE). It is found that the three-step growth interruption method and the underlying InGaN/GaN s…
Graphite fluorides with different structural types (C y F) n ( y = 2.5, 2, and 1) and room temperature graphite fluorides were studied by solid state NMR and NEXAFS. Data extracted from those two techniques are complementary, providing information about the C–F bonding and the hybridization character of the carbon ato…
The multichannel stochastic point transition model of photoinduced electron transfer from both a vibrationally unrelaxed and a relaxed states involving the vibrational relaxation in donor-acceptor pairs has been elaborated. The U-shaped temperature dependencies of the rate constants of the intramolecular photoinduced…
The resistance to chloride-induced corrosion of a 9% chromium-ribbed reinforcing steel is compared to plain carbon steel-ribbed and round bar. The results from this investigation show the considerable variability in chloride threshold concentration and corrosion rate of the three steel types exposed to simulated pore…
SUMMARY A 3D fully Lagrangian smoothed particle hydrodynamics (SPH) model has been developed adopting a particle approximation, which considers both volume and surface elements at boundaries. The model is based on the main principles of the 2D model of Ferrand et al. (2012) and on the spatial reconstruction schemes us…
A GaN nanowall network and InGaN/GaN quantum wells were grown on AlN/Si(111) substrates by molecular beam epitaxy (MBE). The morphology, polarity, structural, and optical properties of the GaN nanowall network were investigated. The lattice constants a 0= 3.193 Å and c 0 = 5.182 Å of the GaN nanowall network were obta…
We study thin strips of three-dimensional topological insulators in the presence of a spin-splitting Zeeman field. We show that under certain conditions the topological edge states at the sides of a strip remain robust against a time-reversal symmetry breaking Zeeman field. For a particle-hole symmetric system with Ze…
Abstract A versatile colloidal templating strategy to fabricate hierarchically structured inverse opals is investigated. A sequence of infiltration and pyrolysis steps provides access to a range of material combinations such as SiO2, Al2O3, or TiO2. The experimental results also document the feasibility of this method…
The effects of temperature and pressure on phonons in B20 compounds FeSi${}_{1\ensuremath{-}x}$Al${}_{x}$ were measured using inelastic neutron scattering and nuclear-resonant inelastic x-ray scattering. The effect of hole doping through Al substitution is compared to results of alloying with Co (electron doping) in F…