Materials Literature
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Abstract Major Applications Poly(vdf-hfp) is a synthetic, noncrystalline polymer that exhibits elastomeric properties when cross-linked. Known to be chemically inert, it is designed for demanding service applications in hostile environments and commonly used as a sealant in hot and corrosive environments,(1,3) such as…
Abstract Major Applications Release agents, rubber molds, sealants and gaskets, surfactants, water repellents, masonry coating, adhesives, process aids, foam control agents, biomedical devices, personal care and cosmetics, medicinal, pharmaceuticals, dielectric encapsulation, greases, lubricants, hydraulic fluids, hea…
Nanoscale and bulk SrAl2O4 : Eu2+, Dy3+ were prepared, respectively, by auto-combustion of citrate gelatin (gel) and high temperature solid state method. The crystalline structure was examined by X-ray diffraction. The morphological and size aspects of nanoscale sample were carried out with transmission electron micro…
The phase behaviour of a thermotropic cubic mesogen of 1,2-bis(4′-n-tetradecyloxybenzoyl)hydrazine BABH-14 was studied under hydrostatic pressure using a polarising optical microscope equipped with a high-pressure optical cell, and the P–T phase diagram was constructed. BABH-14 shows the Cr–Cub–I transition sequence u…
The title compound, dineodymium(III) tris-[tungstate(VI)], is a member of the Eu(2)(WO(4))(3) structure family and crystallizes isotypically with other rare earth tungstates and molybdates of this formula type. The structure is a derivative of the scheelite (CaWO(4)) structure and can be considered as an ordered defec…
The aim of a joint project between the Stiftung Institut für Werkstofftechnik, Bremen (IWT), the company Ipsen International, and the Faculty of Mechanical Engineering and Naval Architecture (FMENA), the University of Zagreb is to develop a computer program for prediction of hardness on the axial section of axially-sy…
Swedish truck industry is investigating the possibility for implementing the use of Compacted Graphite Iron (CGI) in their heavy duty diesel engines. Compared to the alloyed gray iron used today, CGI has superior mechanical properties but not as good machinability. Another issue that needs to be addressed when impleme…
In this work, using the electrolytic plasma thermocyclic treatment technique (EPTT), surface modification of medium carbon steel was carried out. The EPTT system was set as industrial scale. Na2CO3 was used as electrolyte in water. Various voltage and ampere values were performed to obtain good surface properties. Mor…
Process chemistry involved in the discovery and development routes to trisodium [(3β,5β,12α)-3-[[4( S )-4-[bis[2-[bis[(carboxy- kO )methyl]amino- kN ]ethyl]amino- kN ]-4-(carboxy- kO )-1-oxobutyl]amino]-12-hydroxycholan-24-oato(6-)]gadolinate(3-)] ( B22956/1 ) starting from l -glutamic acid and (3α,5β,12α)-3,12-dihydr…
We report processing and luminescence decay characteristics of Cd1− x Zn x S composite nanocrystals (NCs) conjugated with bovine serum albumin (BSA) proteins. Time-resolved study on unconjugate NCs (with dimensions less than the bulk exciton Bohr radius) suggests that in the radiative emission, the fast (τ 1) and the…
Die-casting is an attractive method to produce near-net-shape metallic components. In such dies, heat-checking is the most common failure mechanism. Care must be taken when to design and heat treat steels to optimize parameters which minimize this failure risk; i.e., to control impact toughness and strength at elevate…
ZnO nanoparticles have been synthesised by thermal decomposition of zinc acetate at ∼800°C. The structural characteristics and size distribution of ZnO nanoparticles have been investigated by X-ray powder diffraction (XRD) and small-angle X-ray scattering (SAXS), respectively. SAXS study reveals nanoparticles are of d…
The present work deals with a comprehensive numerical analysis of x-ray grazing-incidence scattering from single- and double-boundary, finite-conducting rough surfaces with asperities of different statistics, performed with the use of a mid-end workstation in a reasonable computation time. Multiple and multi-wave diff…
Polymer-dispersed liquid crystals (PDLCs) composed of poly(dimethyl siloxane), cured poly(dimethyl siloxane) and polysulfone (as matrices), and an azomethine compound (as an embedded mesogen varying in weight from 5 to 80%) were prepared via solvent-induced phase separation. After preparation, they were heated to the…
We calculate the charge and spin Drude weight of the one-dimensional extended Hubbard model with on-site repulsion $U$ and nearest-neighbor repulsion $V$ at quarter filling using the density-matrix renormalization-group method combined with a variational principle. Our numerical results for the Hubbard model $(V=0)$ a…
This article presents a (scanning) transmission electron microscopy (TEM) study of Mn valency and its structural origin at La 0.7 Sr 0.3 MnO 3/SrTiO3(0 0 1) thin film interfaces. Mn valency deviations can lead to a breakdown of ferromagnetic order and thus lower the tunneling magnetoresistance of tunnel junctions. Her…
A novel solid matrix doped with tetra-α-(4- tert -butylphenoxy) gallium phthalocyanine (TBP-GaPc) was prepared. Photophysical properties were investigated in order to analyze the effect of triplet−triplet annihilation (TTA) of the phthalocyanine (Pc) both in a solid matrix and in a tetrahydrofuran (THF) solution at di…
We report emission of broadband light in the spectral range 500 nm - 900 nm from single walled carbon nanotubes (SWNTs) in a liquid environment upon irradiance by a very low power (typically <5 mW), continuous-wave laser source in a tweezers setup. We show (i) formation of micro-bubbles upon irradiation of fluids cont…
The extension of the discrete dipole approximation (DDA) model to the calculation of the ultrafast transient optical response of metal nanoparticles, whatever their shape, is presented. For this, the DDA is combined with the resolution of the Boltzmann equation for the conduction electrons within the low-perturbation…
The macroscopic mechanical properties of polyaniline (PANI) lie mainly on two factors, the structure of molecular aggregations of polymers and the mechanical properties of a single polymer chain. The former factor is well revealed; however, the latter is rarely studied. In this article, we have employed atomic force m…