Materials Literature
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Quaternary antimonide oxides REMnSbO (RE = La, Ce, Pr, Nd, Sm,Gd, Tb) and REZnSbO (RE = La, Ce, Pr) were synthesized from the RESb monoantimonides and MnO, respectively ZnO, in sealed tubes at 1170 K. Single crystals were obtained from NaCl/KCl salt fluxes. The ZrCuSiAs-type (space group P4/nmm) structures of LaMnSbO…
The influence of shape and dielectric property of surrounding media on surface plasmon absorption band of silver nanoparticles was studied. Spherical silver nanoparticles (d = 5.6 nm) synthesized in water using NaBH4 as a reducing agent are transferred in non-polar solvent (chloroform) with phase-transfer reagent oley…
Hydrogen-induced cracking (HIC) has been studied phenomenologically. The effect of microstructure on HIC is discussed for steels having two different levels of nonmetallic inclusions. Steels with different microstructures were produced by a thermomechanically controlled process (TMCP) from two different heats, which h…
A 1 μm long, field emitting, (5, 5) single-walled carbon nanotube (SWCNT) closed with a fullerene cap, and a similar open nanotube with hydrogen-atom termination, have been simulated using the modified neglect of diatomic overlap quantum-mechanical method. Both contain about 80 000 atoms. It is found that field penetr…
Reactive gas plasma treatments of poly(ethylene terephthalate) (PET) and polyimide (Kapton) have been performed using an atmospheric plasmas jet source. Characteristics of surface modification have been examined by changing the distance between the plasma jet source and the treated sample, and by changing the working…
Abstract The reaction behavior of species that may affect the growth of ultrananocrystalline and nanocrystalline diamond ((U)NCD) films is investigated by means of molecular dynamics simulations. Impacts of CH x (x= 0– 4), C 2 H x ( x = 0 – 6), C 3 H x ( x = 0 – 2), C 4 H x ( x = 0 – 2), H, and H 2 on clean and hydrog…
High-pressure X-ray diffraction studies on gadolinium sesquioxide (Gd2O3) have been carried out up to a pressure of ∼25 GPa in a diamond-anvil cell at room temperature. Gadolinium oxide, which has a cubic or bixbyite structure under ambient conditions, undergoes an irreversible structural phase at around 12 GPa. The h…
A novel series of chiral liquid crystalline materials based on 1,3,4‐ and 1,2,4‐oxadiazole derivatives were synthesised. These compounds contain a chiral chain derived from (R)‐2‐octanol (Ia–Ic), (S)‐ethyl lactate (IIa–IIc) or (S)‐isoleucine (IIIa–IIIc). Their liquid crystalline properties were studied by polarizing o…
Organometallic porphyrins with a metal, metalloid or phosphorus fragment directly attached to their carbon framework emerged for the first time in 1976, and these macrocycles have been intensively investigated in the past decade. The present review summarises for the first time all reported examples as well as applica…
Rubber-toughened polypropylene (PP) is an important resin for many engineering applications. Through the structural foaming of materials, material cost-saving and lightweight structures can be achieved. In this study, physical blends of PP and poly(ethylene/octene) at various compositions were characterized for their…
Using electron transfer reaction and free radical polymerization processes a series of triglyceride oil based polymer‐silver nanocomposites were successfully prepared. The whole process was divided into two simultaneous stages; (i) copolymerization of macromonomers obtained from partial glycerides with styrene and (ii…
In this paper, a complementary metal-oxide semiconductor (CMOS)-compatible silicon substrate optimization technique is proposed to achieve effective isolation. The selective growth of porous silicon is used to effectively suppress the substrate crosstalk. The isolation structures are fabricated in standard CMOS proces…
The appearance of unusual internal variables—phason degrees—in quasicrystals challenges the traditional theory of condensed matter in macro- as well as in microscopy, especially for a dynamic process. The elasto-/hydrodynamic model for quasicrystals is suggested and investigated. With this model and the finite differe…
The pitch height–dependent optical extinction spectra and the electric field enhancement of helical and multiring nanostructures are studied by the discrete dipole approximation method. For light incident along the axis of the helix, with the increase of the pitch height, the plasmon peak wavelengths redshift monotoni…
Combinatorial material development was combined with high throughput microelectrochemistry to allow an efficient but comprehensive investigation of the interface chemistry of Al rich Al-Fe alloys as a function of their chemical composition. Composition spread thin films with a linear composition gradient were produced…
A new rectangular columnar liquid crystalline phase with p2gg lattice is reported, which represents a polygonal cylinder array composed of cylinders with trapezoidal cross section. In these polygonal cylinders, one of the sides has a different length and is composed of a different material than the others. This tiling…
A prototype of oxide thermoelectric module only composed of n-legs Ca0.95Sm0.05MnO3, so-called unileg device, has been fabricated. The electrical and thermal measurements have been investigated at high temperature in air. In this non conventional configuration, the pellets are thermally connected in parallel, electric…
Hydrotalcite compounds were found to have high anion adsorption capacity that enhances their capability to remove anionic contaminants from aqueous systems. In this study, the adsorption of nitrates by various layered double hydroxides (LDHs), such as Mg-Al and Zn-Al, was investigated. The nature and content of divale…
Chemical bath deposition of ZnO nanorod films has been accomplished without the need for a seed layer using ethanolamine (as complexant) contaminated with iron. Iron (hydroxy)oxides formed in situ act as nucleation centers for the ZnO growth. This demonstrates the importance of impurities in solution deposition of ZnO.
A mesoscale dissipative particle dynamics model of single wall carbon nanotubes (CNTs) is designed and demonstrated. The coarse-grained model is produced by grouping together carbon atoms and by bonding the new lumped particles through pair and triplet forces. The mechanical properties of the simulated tube are determ…