Materials Literature
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In this study, we report a novel both alcohol and haloganated solvent soluble selective ionophore functional ligand and its β-substituted 2(3),9(10),16(17),23(24)-tetrakis(1-hydroxyhexan-3-ylthio)-phthalocyanines, M { Pc [ S-CH ( CH 2 CH 2 CH 3 )( CH 2 CH 2 OH )] 4 }, (Pc: Phthalocyanine) ( M = Zn , Cu , Co ), where -…
Continuous substitutional solid solutions between cobalt and nickel phosphates with varied degree of anion protonation were obtained: Co1−x Ni x HPO4·1.5H2O and (Co1−x Ni x )3(PO4)2·8H2O, where 0 ≤ x ≤ 1.00. The thermolysis of the solid solutions was studied by the example of Co1−x Ni x HPO4·1.5H2O. The phases synthes…
Abstract A cover glass that is capable of having a deep ion exchange compression layer enables one to tailor the glass to the intended device application. Key to this effort is having a glass mechanics framework that includes resistance to visible and strength‐limiting contact damage as well as maintaining sufficient…
Abstract The magnesium alloys AZ80 und ZK60 received from Dead Sea Magnesium in as-cast conditions were extruded at T = 350 °C using an extrusion ratio of ER = 22. The extruded bars were severely plastically deformed by equal channel angular pressing (ECAP). Multiple ECAP processing up to 8 passes was done. The ECAP-i…
Abstract Nine perfluoroalkyl quaternary ammonium salts containing a perfluorinated tail were synthesized in order to evaluate their properties as additives in protein‐based fire‐fighting foam concentrates. They were obtained in high yield starting from (perfluoro‐ n ‐octyl)methyl oxirane via a two‐step reaction scheme…
The atomic structure of (H 3 O)Fe 3+ (SO 4 ) 2, an important phase in the system Fe–S–O–H, has been determined by the analysis of single-crystal X-ray-diffraction data. Within the unit cell of (H 3 O)Fe(SO 4 ) 2 , there are three layers consisting of Fe(SO 4 ) 2 sheets parallel to (001) composed of FeO 6 octahedra and…
RH-MCM-41 was synthesized by using silica from rice husk and further modified to increase acidity by adding Al with grafting method with Si/Al ratio of 75 and 25. The resulting materials were referred to as RH-AlMCM-41(75) and RH-AlMCM-41(25). The XRD spectra of all RH-AlMCM-41 confirmed a mesoporous structure of MCM-…
Nanocrystalline (NC) semiconductor materials have previously been studied as a means of increasing the exciton multiplicity upon the impingement of visible light, for applications such as solar cells. If the multi-exciton states have highly uniform multiplicities across macroscopic NC samples, then one can also potent…
Polyhydroxyalkanoates (PHAs) are attractive biomaterials in both conventional medical devices and tissue engineering. PHA synthase is responsible for catalyzing the formation of Polyhydroxyalkanoates (PHA), but its structural information is limited. Hence, this study focuses to predict 3D model for phaC1 and phaC2 gen…
The newly fledged nanotechnologies offer opportunities for social development, but uncertainties prevail about their impact on human and environmental health. There is still a huge gap between technological progress and research into the health and safety aspects of nanomaterials. This is clear from the quantity of na…
Neutron, time-of-flight, Laue diffraction has been carried out on natural single crystals of linarite, PbCu(SO4)(OH)2, and caledonite, Pb5Cu2(SO4)3CO3(OH)6, at 293 K. The structural refinements converged to Rw(F) = 0.085 on the basis of 869 observed reflections for linarite and Rw(F) = 0.066 from 1605 observed reflect…
Abstract Two series of substituted p ‐phenylenediamines have been studied for their electronic effects on redox potential and spectral properties. p ‐Phenylenediamines and N,N,N′,N” ‐tetramethyl‐ p ‐phenylenediamine substituted with different numbers of phenyl groups have been synthesized and their cyclic voltammogram…
Well-crystallized and size-tuned ZnO quantum dots (QDs) were prepared by pulsed laser ablation and following size classification using a differential mobility analyzer. Photoluminescence (PL) spectra of the ZnO QDs showed predominant ultraviolet (UV) emission. The finely size-tuned ZnO QDs allowed us to precisely eval…
The effects of light illumination on porous silicon (PSi) properties have been studied using photoluminescence (PL), PL excitation (PLE), and x-ray photoelectron spectroscopy (XPS) measurements. The PL spectrum evolution in PSi sample under light illumination at various wavelengths indicates that the photo-oxidation o…
The magnetic anisotropy and the magnetic-field-induced strain (MFIS) in a single-variant Co(47.5)Ni(22.5)Ga(30.0) ferromagnetic shape memory alloy (FSMA) have been investigated. From the magnetization curves for the single crystal, the hard c-axis was confirmed, and the uniaxial magnetic anisotropy constant K(u) at 30…
This article discusses fundamental properties of metamaterials. Firstly, it is argued that the defining property of metamaterials is emergence and not that they should display properties not observable in nature. In addition, the regime where matter can be assigned effective properties will be quantified using concept…
(Ag,Cu)(In,Ga)Se2thin films have been deposited by elemental co-evaporation over a wide range of compositions and their optical properties characterized by transmission and reflection measurements and by relative shift analysis of quantum efficiency device measurements. The optical bandgaps were determined by performi…
Problem statement: Microstructure of the grain will influence the properties of a polycrystalline manganites when different dopant is introduced. In this work, an effort had been made to investigate the influence of Ca, Ba and Sr substitution in La site. Approach: Polycrystalline manganites compound of La0.67A0.33MnO3…
We studied both theoretically and experimentally the influence of the lattice constant on the resonance frequencies of cut-wire-pair structures, which are essential components in assembling left-handed materials. These structures were designed and fabricated, and the transmission spectra were measured in the microwave…
Liquid germanium exhibits a change in the bonding character from being more covalent to more metallic while heating. We used quasielastic neutron scattering to measure the absolute value of self-diffusion coefficients in this liquid. Compared to other monoatomic liquids, such as liquid Ni or Ti, the self-diffusivity i…