Materials Literature
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Determination of nanometric Ag2O film thickness by surface plasmon resonance and optical waveguide mode coupling techniques, Santillán, Jesica M J, Scaffardi, Lucía B, Schinca, Daniel C, Videla, Fabián A
The effect of modulating the structure of thin pentacene $({\text{C}}_{22}{\text{H}}_{14})$ films by a nanopatterned inert substrate, known as hexagonal boron nitride nanomesh, is reported. Films of different thickness are grown and characterized by x-ray absorption, core-level photoemission, low-energy electron micro…
Significant advances, both practical and theoretical, have been made in understanding the behaviour of engineering materials when machining at higher cutting conditions. Nano-integrated manufacturing is a subject of immense interest for various sustainable engineered systems. Metal removal processes involve the genera…
Electroactive Polymers (EAPs) have a great potential to provide smart solutions to engineering problems in fields such as robotics, medical devices, power generation, actuators and sensors. This is because they yield some important characteristics that are advantageous over conventional types of actuators, like: lower…
Surface patterns of single-stranded DNA (ssDNA) consisting of nanoscale lines as thin as 40 nm were fabricated on polymer substrates for nanotechnology and bioaffinity sensing applications. Large scale arrays (with areas up to 4 cm(2)) of ssDNA "nanolines" were created on streptavidin-coated polymer (PDMS) surfaces by…
Terephthalic dihydrazide was obtained through aminolytic depolymerisation of polyester bottle waste by using hydrazine hydrate. It was further reacted with 4‐aminobenzoic acid in the presence of polyphosphoric acid to obtain a cyclic compound, 4,4′‐[5,5′‐(1,4)‐phenylene)bis(1,3,4‐oxadiazole‐5,2‐diyl)dianiline, having…
We present a molecular dynamics (MD) based computer simulation model for particle bombardment of metal surfaces. In addition to the description of the atomic collision cascade initiated by the particle impact, our model incorporates the electronic degree of freedom of the target and therefore is capable of simultaneou…
Long prized for their optical properties, nitrogen-based semiconductors may take electronic devices into realms where silicon cannot tread.
Vickers hardness indentation tests were employed to investigate the near-surface changes in the hardness of a fibre laser-treated and an as-received ZrO 2 engineering ceramic. Indents were created using 5, 20, and 30 kg loads to obtain the hardness. Optical microscopy, white-light interferometry, and a coordinate meas…
The MgAl 2 O 4 spinels, synthesized by using two different methods (ceramic and coprecipitation), show very low acidity and good dispersion capacity of the metallic phase, these properties being suitable for the use of these materials as supports. However, MgAl 2 O 4 cer displays higher strong acidity than MgAl 2 O 4…
As part of a study of the long-term operation of solid-oxide fuel cells, three (Mn,Co,Cr)3O4samples have been synthesized and characterized. X-ray and neutron diffraction patterns from the powder samples at room temperature were measured and the data were co-refined. The neutron data were indispensible in locating Mn,…
The dynamical mean-field theory of the three-band model of copper-oxide superconductors is used to calculate the doping dependence of the intensity of the oxygen $K$ edge x-ray absorption spectra of high-${T}_{c}$ copper-oxide superconductors. The model is found not to reproduce the results of a recent experiment, sug…
1‐Phenyl‐3‐methyl‐5‐pyrazolonyl azo‐anthraquinone dyes having high light fastness on polylactide fibres were synthesised from 1‐aminoanthraquinone via a diazotisation‐coupling reaction with 1‐phenyl‐3‐methyl‐5‐pyrazolones. The structures of these new dyes were confirmed using mass spectrometry, infrared and proton nuc…
Increasing the conformational stability of proteins is an important goal for both basic research and industrial applications. In vitro selection has been used successfully to increase protein stability, but more often site-directed mutagenesis is used to optimize the various forces that contribute to protein stability…
This is the first report, to our knowledge, of two temporally and geographically related nosocomial Asaia lannensis infections in a paediatric setting. Two patients with idiopathic dilated cardiomyopathy awaiting cardiac transplantation developed bacteraemia during their hospital stay. The physical location of both pa…
The kinetic behavior of heterogeneous esterification of propionic acid with methanol over an acidic cation-exchange resin, Amberlyst 36, was investigated by using a fixed-bed reactor. The kinetic experiments were conducted at temperatures from 313.15 to 333.15 K, and molar ratios of methanol to propionic acid in the f…
Recently, bio-inspired shape memory alloy composite (BISMAC) actuators have been shown to be promising for the design of medusae rowing propulsion. BISMAC actuators were able to recreate bell deformation of Aurelia aurita by controlling shape memory alloy (SMA) deformation that allowed matching the contraction-relaxat…
Fuel oxidation reaction in anode electrode of solid oxide fuel cells (SOFC) is a multi-step reaction. The oxidation reaction begins with dissociative adsorption of fuel molecule on the surface of the electrode and subsequently diffusion of hydrogen atoms to the triple phase boundary sites, where the hydrogen atom comb…
According to our theoretical approaches, a cyclic boryl anion can act as a Lewis base like its isoelectronic counterpart N-heterocyclic carbene, reducing the homolytic bond dissociation energy of B-H in BH(3). However, the donating efficiency is affected by the counter cation in both gas phase and nonpolar solvents. M…
Mechanical stimuli are critical for the development and maintenance of most tissues such as muscles, cartilage, bones and blood vessels. The commercially available cell culture systems replicating the in vivo environment are typically based on simple membrane cell-stretching equipment, which can only measure the avera…