Materials Literature
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Abstract Rheological properties of fiber/polymer suspensions and dynamic mechanical analysis (DMA) of paper sheets containing the same polymers were measured. Correlations between viscoelastic properties of suspensions and strength of paper sheet are presented. Rheological properties of suspensions of microfibrillar c…
The cubic phase of boron nitride (c-BN) is an extremely promising multifunctional material. However, to exploit all possible applications, large area chemical vapor deposition (CVD) of c-BN films is required. For a successful CVD growth of high-quality c-BN films one must obtain a deeper understanding about the struct…
The electrical resistance of mats of single-wall carbon nanotubes (SWNTs) is measured as a function of mat temperature under various helium pressures, in vacuum and in atmospheric air. The objective of this paper is to study the thermal stability of SWNTs produced in a helium arc discharge in the experimental conditio…
Reduction of specific absorption rate (SAR) has now become a buzz word because of the growing health concerns over microwave exposure. Ferrites are found to be effective in diminishing electromagnetic influence. In this reported work, flexible polymeric ferrite sheets are characterised on the basis of their shielding…
The effect of the curvature of the carbon support material has been investigated by molecular dynamics simulations of a Pt 100 and a Ni 100 cluster adsorbed on fishbone-like carbon nanofibers using the ReaxFF reactive force field. Carbon nanocones both with and without hydrogen termination have been considered. Withou…
A two-step alkylation of single-walled carbon nanotubes was investigated. The functionalized SWNTs were characterized with vis-NIR and Raman spectrometers, scanning electron microscope, and thermogravimetric analysis. This one-pot alkylation of SWNTs with alkyllithium followed by alkyl halide is useful for the sidewal…
This study investigates the influence of a machining-induced white layer on the performance of hard machined surfaces in rolling contact. Based on the residual stress and microhardness distribution of a specimen without a white layer and one with a white layer, fatigue parameters are computed to investigate its effect…
Creation of large-scale arrays of single-walled carbon nanotubes (SWNTs) with defined orientation and density is of central importance for obtaining functional electronic device structures that incorporate these nanoscaled systems. This manuscript describes how the macroscopic electrical properties of 2D SWNT networks…
We show that when superconductivity is induced in graphene through proximity effect, a superconducting vortex is dressed with an interesting pattern of textured order parameters. Furthermore, passing a supercurrent in a superconducting graphene sample induces accumulation of valley pseudospin quantum number at edges:…
Catalytic decomposition of methane is considered as a prospective pro-ecological method of hydrogen production. The main drawback of this method is fast deactivation of the catalyst by an inactive carbonaceous deposit formed in the reaction. In this study, a series of experiments have been made to check the effect of…
The paper reports on the fabrication of a localized surface plasmon resonance (LSPR) interface with nanocrystalline diamond (NCD) as overcoating. The LSPR interface is formed through thermal evaporation of a 4 nm gold film onto quartz substrates and postannealed at 800 °C. The resulting gold nanostructures (Au NSs) ar…
The synthesis of mesostructured silica formed at mildly acidic conditions using the nonionic surfactant Pluronic P123 has been studied with the aim of showing the importance of the degree of condensation of the silica source. The experimental investigation employed was in situ small-angle X-ray scattering (SAXS) in co…
The growth of protein crystals in quiescent mode depends on the supply of protein in a closed vessel, where crystals grow to a size limited by the mass of protein in solution in contact with the crystal. Here, we show that by inducing solution flow into a lower temperature environment, protein crystals grow in capilla…
Abstract At the present time there are commercially available large un‐cooled micro‐bolometer arrays (as large as 1024×768 pixels) for a variety of thermal imaging applications. Different thermo‐sensing materials have been employed as thermo sensing elements as Vanadium Oxide (VO x ), metals, and amorphous and polycry…
Continuous nanocrystalline diamond films have been grown on Si and glass substrates at substrate temperatures of around 150 °C by the microwave plasma chemical vapor deposition technique. We have observed the nucleation enhancement of diamond crystals from adamantane (C 10 H 16 ) seeding for the first time, which is e…
We report a sequential functionalization methodology for the covalent modification of multiwalled carbon nanotubes (MWNTs) with one and a half repeat units of the polymer poly- p -phenyleneterephthalamide (PPTA), Kevlar. Covalent attachment of PPTA monomer units, p -phenylenediamine (PDA) and terephthaloyl chloride (T…
Abstract Poly(3‐hydroxybutyrate‐ co ‐3‐hydroxyhexanoate) (PHBHHx) copolymeric microparticles (MPs) and nanoparticles (NPs) were prepared by the double‐emulsion solvent‐evaporation technique. 5‐Fluorouracil (5‐Fu), an anticancer drug, was entrapped in PHBHHx NPs and MPs. A variety of parameters, including the species a…
We have investigated the Coulomb screening properties and plasmon spectrum in a bilayer graphene under a perpendicular electric bias. The bias voltage applied between the two graphene layers opens a gap in the single-particle energy spectrum and modifies the many-body correlations and collective excitations. The energ…
The synthesis and self-assembly of DOPA containing diblock copolypeptides into spherical vesicles is described. DOPA residues are naturally abundant in mussel adhesive proteins and are responsible for extensive covalent crosslinking of these materials upon oxidation. We found that vesicles could be formed from copolyp…
Density functional theory (DFT) calculations were carried out in a study of oxidation of methane to methanol by N 2 O on the Fe- and Co-ZSM-5 clusters. The catalytic cycle steps have been studied on model clusters ((SiH 3 ) 4 AlO 4 M) (where M = Fe, Co). Calculations indicate very low methanol selectivity without wate…