Materials Literature
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The changes to the microstructure of the duplex stainless steel SAF 2205 during hot tensile tests were investigated. The dominant restoration mechanisms for ferrite and austenite were dynamic recovery (DRV) and dynamic recrystallization (DRX), respectively. Also, the effect of temperature on the deleterious phase prec…
Cu–Zn/γ–Al2O3 catalysts were prepared by the impregnation method. Catalytic activity was evaluated for N2O decomposition in a fixed bed reactor. The fresh and used catalysts were characterized by several techniques such as BET surface area, X-ray diffraction (XRD), and scanning electron microscopy (SEM). The Cu–Zn/γ–A…
Abstract Chitosan/sericin blend membranes for adsorption of bovine serum albumin (BSA) were investigated. A preliminary screening test was carried out to identify a suitable chitosan/sericin blend ratio. The blend membrane with a chitosan/sericin mass ratio of 4:1 was found to have a maximum adsorption capacity ( q m…
Tunneling electroresistance (TER) effect has been observed in high quality ultrathin BiFeO3 thin films. The growth quality of the ultrathin BiFeO3 films was confirmed using the synchrotron high resolution X-ray diffraction techniques as well as high-resolution transmission electron microscopy. Ferroelectric-based resi…
We study the ground state conduction properties of noninteracting electrons in aperiodic but nonrandom one-dimensional models with chiral symmetry and make comparisons against Anderson models with nondeterministic disorder. The first model we consider is the Fibonacci lattice, which is a paradigmatic model of quasicry…
This paper deals with the development of porous magnesium alloys that can be used in medicine for bone fixations and implants. The individual components of the alloys were chosen so that the biodegradability of the material is maintained. The advantage of these magnesium materials should be an ability to decompose aft…
A visual demonstration showing the physical properties of hydrophobic and hydrophilic surfaces is described. This demonstration utilizes unique aqua-sheets that are fabricated using plasma enhanced chemical vapor deposition (PECVD) to give areas of high water contact angle (hydrophobic) and areas of low water contact…
The step‐wise conversion of synthetic porphyrins to derivatives that contain a non‐pyrrolic building block is an appealing method to generate functionalized porphyrinoids. Applied to octaethyloxochlorin oxime, a Beckmann rearrangement is potentially suited to generate a nitrogen‐expanded porphyrinoid. Unexpectedly, th…
Oligomeric micelles from sodium undecylenate (oSUD) were chemisorbed to magnetic iron oxide nanoparticles (MNPs) through a single-step synthetic route involving the simultaneous nanoparticle formation and functionalization in an aqueous medium. The resulting spherical nanoparticles (MNPs-oSUD) consisted of a concatena…
An analysis of the spalling technique of concrete bars using the modified Hopkinson bar was carried out. A new experimental configuration is proposed adding some variations to previous works. An increased length for concrete specimens was chosen and finite-element analysis was used for designing a conic projectile to…
Abstract A series of self‐doped oligoaniline derivatives, that is, carboxyl‐capped tetraaniline (HOOC‐(Ani) 4 ‐COOH), carboxyl‐capped pentaaniline (HOOC‐(Ani) 5 ‐COOH), carboxyl‐capped hexaaniline (HOOC‐(Ani) 6 ‐COOH), and carboxyl‐capped star‐shaped tetraaniline (Tri‐(Ani) 4 ‐COOH) in leucoemeraldine base state, were…
In the present study, we report the preparation of CuO nanopowder by using a coupled chemical method, namely sol-gel/hydrothermal processes. The product of the first stage process (i.e. sol-gel) was a nanocomposite of Cu(OH) 2 /SDS, while the product of the second stage (i.e. hydrothermal) was a pure phase of CuO nano…
The conversion of synthetic porphyrins to derivatives that contain a nonpyrrolic building block is an appealing method to generate porphyrinoids with functional groups at their periphery for sensing applications or chromophores with fine‐tuned electronic properties for a number of technical and biomedical applications…
Abstract Ferromagnetic resonance has been used to investigate the effect of a Mn/Si and a Co/Mn atomic disorder on the magnetic properties and dynamic relaxation of Co 2 MnSi Heusler alloy. He + ion irradiation at 150 KeV is used to induce a Co/Mn and Mn/Si swap in the initial structure of the material. While a Mn/Si…
Cl exhibits a pronounced metal-insulator transition at [Formula: see text] K. From the splitting of the molecular vibrations, the phase transition can be unambiguously assigned to charge-ordering with [Formula: see text]. We have investigated the pressure evolution of this behavior by temperature-dependent electrical…
We compare the wetting, morphology and anticorrosion properties of fluorosilane-modified TiO2 (FAS-TiO2/epoxy) and as-received TiO2/epoxy coatings. An array of double-layer TiO2 nanoparticles of two sizes (30 nm and 300 nm) were spin coated onto a steel substrate AISI 316L. The static water contact angles were measure…
An extruded sheet having unique molecular orientation is developed using a miscible blend of isotactic polypropylene (PP) and isotactic polybutene‐1 (PB). Blends containing a small amount of N , N′ ‐dicyclohexyl‐2,6‐naphthalenedicarboxamide are extruded from a ribbon‐shaped die onto a chill roll at various temperature…
Insulated molecular wires formed from organic molecules may have promising applications in organic and flexible electronic devices. Here, the authors provide compelling evidence of the formation of insulated molecular wires by sheathing conducting regioregular poly(3‐butylthiophene‐2,5‐diyl) (P3BT) fibrils with insula…
The ability to functionalize graphene with several methods, such as radical reactions, cyclo-additions, hydrogenation, and oxidations, allows this material to be used in a large range of applications. In this framework, it is essential to be able to control the efficiency and stability of the functionalization process…
Exhaust emission from automobile source has become a major contributor to the air pollution and environmental problem. Catalytic converter is found to be one of the most effective tools to reduce the overwhelming exhaust pollutants in our environment. The development of sustainable catalytic converter still remains a…