Materials Literature
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"Here, the world's most active and productive computational scientists from academia and industry present established, effective and powerful tools for understanding catalysts. With its broad scope - nitrogen fixation, polymerization, C-H bond activation, oxidations, biocatalysis and much more - this book represents a…
We report methods for the acquisition and analysis of optical images formed by thin films of twisted nematic liquid crystals (LCs) placed into contact with surfaces patterned with bio/chemical functionality relevant to surface-based assays. The methods are simple to implement and are shown to provide easily interprete…
In this study we examine the release profile of bovine serum albumin (BSA) from a porous polymer matrix derived from a co-continuous polymer blend. The porosity is generated through the selective extraction of one of the continuous phases. This is the first study to examine the approach of using morphologically tailor…
In response to increasing interest in the area of subdiffraction-limited near-field imaging, the performance of several different realizable and theoretical superresolving silver-based lenses is simulated for a variety of different input object profiles. A computationally-efficient T-matrix technique is used to model…
4,5-Bis(benzylthio)-3,6-diethylphthalonitrile (1) was mixed with 4 -t-butylphthalonitrile and then treated with lithium alkoxide in n-hexanol to produce the corresponding unsymmetrically substituted phthalocyanines (2) and (3) with two or four benzylthio groups, respectively. Treatment of phthalocyanine (2) with nicke…
Purpose This paper seeks to study the corrosion rate (CR) of Al 6063 in aqueous solutions containing food additives, namely ascorbic, citric and tartaric acids with/without chloride ions. Design/methodology/approach Chemical and electrochemical measurements were used to study the CR of Al 6063 in aerated aqueous solut…
Reaction of a (PNP)Ni radical with NO finishes in the time of mixing to form a 1:1 adduct with a NO stretching frequency of 1654 cm (-1). NMR data of this diamagnetic product indicate C 2 v symmetry, which is contradicted by the X-ray structure, which shows it to be nonplanar at Ni, with a geometry intermediate betwee…
The crystal structure of magnesium astrophyllite, ideally K 2 Na [Fe 4 Mg 2 Na] [5] Ti 2 Si 8 O 26 (OH) 4 , is monoclinic, sp. gr. C 2/ m , a = 5.3327(2), b = 23.1535(9), c = 10.3775(4) A, β = 99.615(1)°, V = 1263.3(1) A 3 , Z = 2, D calc . 3.158 g cm −3 from Mt. Yukspor, Khibina alkaline massif, Kola Peninsula, Russi…
Structural study with synchrotron X‐ray diffractometry was made on phase separation phenomena in 2, 3, and 4 mol% Y 2 O 3 ‐stabilized tetragonal ZrO 2 polycrystal (abbreviated as 2, 3, and 4Y‐TZP, respectively). The sintered body of 3Y and 4Y‐TZP underwent phase separation into high and low yttrium regions as sinterin…
A highly efficient, carbon-free rice husk ash (RHA) has been successfully used as a catalyst in oxalic acid (OA) decomposition by combining with ozonation at pH 3. The catalyst was characterized using various analytical techniques. X-ray fluorescence (XRF) analysis showed that RHA catalyst contains SiO 2 as a major co…
A series of polyhedral oligosilsesquioxane (POSS) nanosensors functionalized with fluorophores that change their wavelength of emission in response to their chemical environment has been synthesized and characterized by IR, NMR, UV, one- and two-dimensional fluorescence spectroscopy, MALDI-TOF MS, and electrospray MS.…
Woven cloths of Nextel ™ 610 and 720 fibers were coated with monazite by precipitation. The cloths were first saturated with concentrated precursor solutions, and then submerged in warm water to initiate precipitation onto the fiber surfaces. Coatings were characterized by scanning electron microscopy, and transmissio…
Time-resolved scanning tunneling microscopy (STM) is used to investigate a massive sulfur-induced transformation of a homogeneous array of approximately 2 nm Co nanoparticles into a new cobalt sulfide phase. The underlying atomistic mass-transport process is revealed and, surprisingly, found to be mediated exclusively…
Microstructural study of as-grown Ti4AlN3 MAX phase has been performed by transmission electron microscopy. Dislocation walls, dislocation nucleation sites and stacking faults are described. In particular, diffraction contrast analysis combined with high-resolution images give a new insight into the nature of the stac…
One-dimensional (1D) and two-dimensional (2D) NMR studies are used to probe the conformation of a melamine dendrimer bearing unique NMR signals from the core to the periphery. Four conceptual anchors for dendrimer conformation emerge from these experiments. First, changes in isomer populations observed by (1)H NMR rev…
By means of ab initio calculations we predict that it is possible to manipulate the magnetization direction in organic magnetic molecules by changing their oxidation state. We demonstrate this novel effect on the Eu2(C8H8)3 molecule, in which the hybridization of the outer pi ring states with the Eu 4f states causes a…
Preliminary results about laser sintering of zirconium diboride (ZrB 2 ), a good ultra high‐temperature ceramics candidate, are presented. In order to evaluate a suitable sintering method, single pulsed laser and a concentric dual laser system were carried out. Two different ZrB 2 powders having ∼15 and ∼2 μm particle…
Purpose To investigate the adsorption behaviour and inhibitive effect ofVigna unguiculata(VU) extract (agricultural waste material) for aluminium corrosion in 0.5 M NaOH and H2SO4. Design/methodology/approach The inhibitive effect of the plant extract was assessed using weight loss method at 30 and 60oC. The trend of…
Abstract Polyaniline/carboxylated multi‐walled carbon nanotube (PAni/c‐MWNT) nanocomposites have been synthesized by micellar aided emulsion polymerization with various c‐MWNTs compositions, viz., 0.5, 1, 5, and 10 wt %. The microcrystalline parameters such as the nanocrystal size (〈N〉), lattice strain (g), interplana…
Three-dimensional porous core-shell nanostructures consisting of gold skeletons and silver shells were fabricated by controllable electroless plating. Optical properties of the 3D nanocomposite with a heterogeneous interface exhibit a significant shell-thickness dependence. The porous core-shell structure with an opti…