Materials Literature
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Silver (SN) nanoparticles were re‐dispersed in aqueous solution of Pluronic F127 and complexed with the antioxidant, alpha‐ Lipoic acid (LA). The nanoparticle ‐ LA complex (SN‐LA) was characterized using SEM. SN‐ LA exhibited DPPH radical scavenging activity in vitro and anti‐ inflammatory activity against acute and c…
A theoretical model for the electrocaloric effect (ECE) in relaxor ferroelectrics is presented. By solving a self-consistent relation for the ECE temperature change ΔT and minimizing numerically the mean field free energy for relaxors, the field and temperature dependence of ΔT is calculated. The corresponding harmoni…
OBJECTIVE: To identify the larvicidal activities of silver nano particles synthesised with Rhizophora mucronata (R. mucronata) leaf extract against the larvae of Aedes aegypti (Ae. aegypti) and Culex quinquefasciatus (Cx. quinquefasciatus). METHODS: In vitro larvicidal activities such as LC(50) and LC(90) were assesse…
BACKGROUND: Nanomaterials are considered to be the pre-eminent component of the rapidly advancing field of nanotechnology. However, developments in the biologically inspired synthesis of nanoparticles are still in their infancy and consequently attracting the attention of material scientists throughout the world. Keep…
The dielectric constant and the conductivity of epoxy resin nanocomposites exhibit a lower value at slight filler loading compared with the host epoxy resin. The electrical strength has an increase and presents an optimal value at filler loading of 1 wt%. The interaction zone between the nanoparticles and the polymeri…
BACKGROUND: Biodegradable polyurethanes have found widespread use in soft tissue engineering due to their suitable mechanical properties and biocompatibility. METHODS: In this study, polyurethane samples were synthesized from polycaprolactone, hexamethylene diisocyanate, and a copolymer of 1,4-butanediol as a chain ex…
Bernal (ABA stacking order) and rhombohedral (ABC) trilayer graphene (3LG) are characterized by Raman spectroscopy. From a systematic experimental and theoretical analysis of the Raman modes in both of these 3LGs, we show that the G band, G' (2D) band, and the intermediate-frequency combination modes of 3LGs are sensi…
Over the past twenty years there has been intense interest in the design and understanding of catalysis by gold. More recently, it has been observed that alloying gold with a second metal greatly enhances the catalytic efficacy. These supported nanoparticles offer great potential as catalysts for the synthesis of fine…
The diesel oxidation catalyst (DOC) has been part of diesel exhaust systems since regulations were introduced to limit the amount of harmful emissions released to the environment from diesel engines. The DOC primary functions are oxidation of CO, unburned hydrocarbons, and NO, while active hydrocarbon oxidation can al…
This report presents the conclusions of the X-ray Validation Task Force of the worldwide Protein Data Bank (PDB). The PDB has expanded massively since current criteria for validation of deposited structures were adopted, allowing a much more sophisticated understanding of all the components of macromolecular crystals.…
Temperature-dependent dielectric permittivity of 0.94(Bi1/2Na1/2)TiO3-0.06BaTiO3 (BNT-6BT) lead-free piezoceramics was studied to disentangle the existing unclear issues over the crystallographic aspects and phase stability of the system. Application of existing phenomenological relaxor models enabled the relaxor cont…
In this study, a high energy ball milling process was introduced in order to improve the densification of direct nitrided AlN powder.The sintering behavior and thermal conductivity of the AlN milled powder was investigated.The mixture of AlN powder and 5 wt% Y 2 O 3 as a sintering additive was pulverized and dispersed…
We have performed the molecular-dynamics simulations for the atactic polystyrene (aPS) films supported by one substrate (SF, supported film) and films capped by two substrates (CF, capped film).The simulations of supported films have been carried out with the purpose to study the influence of confinement on the glass-…
Potato starch has great processability and formamide could provide excellent plasticization. Consequently, potato starch was modified into formamide pseudo-thermoplastic potato starch (FTPP) films in this study. For the evaluation of the optimum preparation on FTPP, we focus on analysis of the plasticizers effect and…
Yttria stabilized zirconia (YSZ) coating was formed on AA1050 Al alloys by aerosol deposition (AD), and its electrochemical corrosion properties were investigated in 3.5 wt% NaCl and 0.5 M H 2 SO 4 solutions.The crack-free, dense, and ~5 µm thick YSZ coating was successfully obtained by AD.The as-deposited coating was…
Macroporous silicon carbide (SiC) ceramics were fabricated by powder processing and polymer processing using carbon-filled polysiloxane as a precursor. The effects of the starting SiC polytype, template type, and template content on porosity and flexural strength of macroporous SiC ceramics were investigated. The -SiC…
Methods for the synthesis and the electronic and crystal structures of neutral and anionic isotrithionedithiolate transition metal complexes are considered. The unusual electrophysical, magnetic and optical properties of these complexes, including superconducting structures, spin-ladder structures and nonlinear optica…
Quasielastic neutron scattering (QENS) was used to investigate the diffusion dynamics of hydration water on the surface of rutile (TiO(2)) nanopowder. The dynamics measurements utilizing two inelastic instruments, a backscattering spectrometer and a disk chopper spectrometer, probed the fast, intermediate, and slow mo…
Corrosion experiments were carried out to investigate the effect of several operating parameters on the corrosion rate and corrosion potential of carbon steel in turbulent flow conditions in the absence and presence of sodium benzoate inhibitor using electrochemical polarization technique. These parameters were rotati…
We studied the effect of a solid surface on the fluid-fluid phase separation of a colloid-polymer mixture in real space, exploring demixing from both the unstable and metastable regions of the phase diagram. The presence of a wall breaks the symmetry of the phase separation morphology in the direction perpendicular to…