Materials Literature
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Zirconium aluminum nitride coatings have been deposited onto Ti-6Al-4V substrates by reactive magnetron sputtering in order to investigate the influence of Al-content on the microstructure and mechanical properties. The morphology and microstructure of the coatings were investigated by field emission scanning electron…
The performance of a flexible and glass dye-sensitized solar cell (DSSC) with water-based electrolyte solutions is described. High concentrations of alkylamidazoliums were used to overcome the deleterious effect of water and, based on this variable, pure water-based electrolyte DSSCs were tested displaying the highest…
We study foam flow in an elementary model porous medium consisting of a convergent and a divergent channel positioned side by side and possessing a fixed joint porosity. Configurations of converging or diverging channels are ubiquitous at the pore scale in porous media, as all channels linking pores possess a convergi…
The oxidation of calcium films by water vapor is the basis of the “Ca test” used to measure low water vapor transmission rates (WVTRs) through gas diffusion barriers. The Ca test assumes that the Ca film oxidation rate is linear with H 2 O flux transmitted through the barrier. However, lag times are often observed dur…
This study investigated the influence of a Zn–Ni solution on the phase composition and surface morphology of Zn–Ni (zinc–nickel) alloy coatings, which were deposited in a non-cyanide alkaline bath that contained ethylenediamine (ED) and triethanolamine (TEA) as complexing agents. The structural investigations and surf…
The photoelectrochemical properties of metal-insulator-silicon cells with varying SiO2 thickness are studied using slot-plane-antenna (SPA) growth. This method can produce ultrathin films with precise thickness at low temperatures. N-type silicon photoanodes and degenerately doped p-type silicon anodes are fabricated…
The use of carbon nanotubes (CNTs) as cylindrical reactor vessels has become a viable means for synthesizing graphene nanoribbons (GNRs). While previous studies demonstrated that the size and edge structure of the as-produced GNRs are strongly dependent on the diameter of the tubes and the nature of the precursor, the…
The adapted continuum models pertinent to ellipsoidal microparticles do not generally hold at the nanoscale due to the approximations apart from the surface effects and the neglect of atomic discrete structure. The governing equation of describing the interactions, non-contact forces in particular, between ellipsoidal…
ABSTRACT The mechanical properties of stretched poly(vinyl alcohol) (PVA), which is formed by stretching a film prepared from a freeze/thaw cycled gel, were investigated as a function of the stretching ratio. The tensile strength and Young's modulus of 800% stretched PVA annealed at 130°C were 3.4 and 119 GPa, respect…
The development of new processes for depositing thin organic films has seen a renewed interest due to an increased demand for nanoelectronic devices. Tools for producing these devices, such as advanced lithographic patterning, often require ultrathin films with a high degree of compositional homogeneity. Molecular lay…
Display full sizeEfficient double click methods for the synthesis of carbazole core diblock codendrimers were developed. The synthetic strategy involved the sequential double click reactions between an alkyne and an azide. The chromophore building block, N-octyl-3,6-diazidocarbazole, was chosen to serve as the azide f…
We theoretically analyze the aggregation kinetics of colloid particles with several active sites. Such particles (so-called "patchy particles") are well known as chemically anisotropic reactants, but the corresponding rate constant of their aggregation has not yet been established in a convenient analytical form. Usin…
Collection of selected, peer reviewed papers from the the 4th International Conference on Advanced Engineering Materials and Technology (AEMT 2014), June 14-15, 2014, Xiamen, China. The 323 papers are grouped as follows: Chapter 1: Nano Materials Science and Technology, Chapter 2: Metals and Alloys, Chapter 3: Steel M…
An automatic control method to prevent thin strip steel from breaking in cold rolling is presented in this paper. The strip width detector is equipped at the entry and exit sections of the cold rolling mill respectively, thus the width reduction of the strip steel before and after the mill can be real-time detected .…
The pressure dependence of the band gap energy of the dilute nitride GaNP is analyzed. It is found that the pressure dependence of the Г conduction band minimum (CBM) is stronger than that of the X CBM. We also find that the energy difference between the X CBM and the Г CBM in GaNP becomes large with increasing N cont…
This study reports the phase transformation of poly(vinylidene fluoride) (PVDF) in its miscible blends with poly (3-hydroxybutyrate-co-4-hydroxybutyrate) (P34HB) upon stretching. The original α-form of the PVDF component in the blends is converted into the β-form by stretching, which is decreased with the increasing P…
As a new azide-free gas generating pyrotechnic composition, the performance of four kinds of 5-aminotetrazole nitrate (5-ATN) gas generating compositions were investigated by hygroscopicity, compatibility, impact sensitivity, heat of combustion and burning temperature measurement. The advantages of the gas generant us…
A new phosphorescent Iridium complex, Ir(TMP-TT)2(acac) was synthesized for organic light-emitting diodes (OLEDs). The ligand, TMP-TT, was synthesized by Suzuki coupling reaction, and Ir(TMP-TT)2(acac) was synthesized by Nonoyama reaction. The UV-Visible absorption peak and shoulders of Ir(TMP-TT)2(acac) were measured…
Thin films of Co and Co/Cu/Co trilayers with wedged Cu interlayers were grown epitaxially on Cu buffer layers on hydrogen passivated Si(001) wafers. We find that single Co layers have a well-defined four-fold anisotropy but with smaller in-plane anisotropies than observed in Co grown on Cu crystals. Ruderman–Kittel–Ka…
We consider an axisymmetric liquid film on a horizontal cylindrical surface subjected to axial harmonic oscillation in the high-frequency limit. We derive and analyze the nonlinear evolution equation describing the nonlinear dynamics of this physical system in terms of the averaged film thickness. The method used for…