Materials Literature
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Getting to the bottom of groundwater: The development of a reliable, portable, and simple-to-use device for detecting arsenic in groundwater is urgently needed in developing nations such as Bangladesh, where contaminated groundwater is at the root of a public health crisis. Toward this end, a highly sensitive platform…
Gold is an excellent absorber of X-rays. If tumours could be loaded with gold, this would lead to a higher dose to the cancerous tissue compared with the dose received by normal tissue during a radiotherapy treatment. Calculations indicate that this dose enhancement can be significant, even 200% or greater. In this pa…
In general, fabrication of well-defined organic nanowires or nanobelts with controllable size and morphology is not as advanced as for their inorganic counterparts. Whereas inorganic nanowires are widely exploited in optoelectronic nanodevices, there remains considerable untapped potential in the one-dimensional (1D)…
Two new hetero-tetranuclear complexes, [Sm2(o-phen)2(DMF)6(H2O)2(µ-CN)4Fe2(CN)8]·;5H2O·;CH3OH (1) and [Sm2(o-phen)2(DMF)6(H2O)2(µ-CN)4Co2(CN)8]·;5H2O (2), have been prepared from reaction of SmCl3·;6H2O, K3[Fe(CN)6]·;3H2O or K3[Co(CN)6], and o-phen in methanol/DMF, and characterized. The structure of 1 consists of a c…
Carbon nanotubes have the potential to become one of the actuating materials of the future. Since the discovery of the actuating effect a lot of experimental data was collected to describe the electro-mechanical coupling. With this paper a model for the system behavior is available to enhance the understanding of the…
Despite the extensive use of the Lennard-Jones potential in atomistic simulations, we present a metastable phase not reported so far for the Lennard-Jones solid. This phase having space group I4¯3d arises from distortion of the body-centered cubic network. In contrast to the body-centered cubic phase, the I4¯3d phase…
Abstract Reactions have been designed to verify the reversibility of butylamine intercalation–deintercalation in the layered perovskite‐type oxide KCa 2 Nb 3 O 10 . The reactions include ion exchange to form HCa 2 Nb 3 O 10 · 1.5H 2 O, butylamine intercalation for producing C 4 H 9 NH 3 Ca 2 Nb 3 O 10 , transformation…
Two‐step sintering was applied to yttria‐stabilized zirconia (YSZ) electrolytes screen‐printed on primed porous prefired substrates. The YSZ layers were sintered at a range of peak and dwell temperatures. Relative density values from 0.79 to 0.97 corresponded to grain sizes ranging from 0.6 to 10 μm, indicating that g…
Cr and Ru ions are statistically disordered in SrCrxRu1−xO3 perovskites, and yet long-range magnetic order up to 480 K is observed. This is attributed to all four of the distinctive magnetic interactions being antiferromagnetic with those between neighboring Cr and Ru strengthened by transfer of spin-up (green) or spi…
A 2.45 GHz microwave‐sintered Si 3 N 4 –Y 2 O 3 –MgO system containing various amounts of ZrO 2 secondary additives have been studied with respect to phase transformation and densification behavior. The temperature dependent dielectric properties were measured from 25°C to 1400°C using a conventional cavity perturbati…
A new process for coating a mesoporous silica gel with a mixture of the grafting reagents para-aminophenyltrimethoxysilane and phenyltrimethoxysilane is thoroughly analyzed. The dilution of para-aminophenylsilane with phenylsilane at different ratios allows the density of the functional amino groups present on the sil…
A simple and efficient approach was developed for the synthesis of a series of cationic water-soluble oligofluorenes up to a chain length of a heptamer. Bromoalkyl-substituted fluorenyl boronic esters as the key intermediates were synthesized by using a modified Miyaura reaction. With an increasing number of repeat un…
Low adhesion with normal metals is an intrinsic property of many quasicrystalline surfaces. Although this property could be useful to develop low friction or non-stick coatings, it is also responsible for the poor adhesion of quasicrystalline coatings on metal substrates. Here we investigate the possibility of using c…
We present a review of experimental studies of adsorption systems where pseudomorphic growth on quasicrystal surfaces has been observed. From these studies, we correlate information on the known or suggested adsorption and nucleation sites. For fivefold surfaces of icosahedral quasicrystals, two favoured locations eme…
In the present work, strong polybase quaternized hydroxyethyl cellulose ethoxylate (HECE) and weak polyacid alginate (AA) were assembled into {HECE/AA} n layer-by-layer (LBL) films on electrodes by electrostatic interaction between them, and the films were then immersed in myoglobin (Mb) solution to load Mb into the f…
In this paper, a new net‐shaping process, an hydrolysis‐induced aqueous gelcasting (GC) (GCHAS) has been reported for consolidation of β‐Si 4 Al 2 O 2 N 6 ceramics from aqueous slurries containing 48–50 vol%α‐Si 3 N 4 , α‐Al 2 O 3 , AlN, and Y 2 O 3 powders mixture. Dense ceramics of same composition were also consoli…
Local order of liquid Ti is studied by ab initio molecular dynamics to address the unique liquid structure factor in experiments reported recently. The present study reveals that the local order of liquid Ti is in the form of fragments of the distorted icosahedral short range order, where the distortion is induced by…
The synthesis of a new phthalonitrile derivative (4-(benzo[d]thiazol-2-ylthio)phthalonitrile), its metal-free phthalocyanine, and metallo-phthalocyanines are described. Phthalocyanines are formed in high yield with template synthesis. These compounds showed considerable solubility in CHCl3, DMF and DMSO, a primary con…
Abstract In this work, the surface–protein interfacial noncovalent interactions are generated and tuned as hydrogen bonding, hydrophobic affinity, electrostatic interaction, and additional π‐π overlapping through designing suitable surface property with different chemical moieties and varying the pH of adsorption medi…
Theoretical studies based on density functional theory framework have been performed on covalently functionalized carbon nanotubes (NTs) with azomethine ylides using SIESTA and CPMD codes. In view of the binding energies, it is found that armchair tubes favor functionalization at C−C bonds slanted to the tube axes, wh…