Materials Literature
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The synthesis of highly active acid catalysts supported on ordered mesoporous materials has eluded chemists until 1998, when Wim M. Van Rhijn et al. explored three different routes to tether sulfonic acid on mesoporous silica. This viewpoint sheds light on this landmark and explores its significant impact on material…
Textured, dense, polycrystalline Ti3AlC2 ceramics was fabricated by spark plasma sintering (SPS) of plate-like Ti3AlC2 powder synthesized by a reactive SPS-heat treatment of elemental Ti, Al and carbon black powders. The relative density was found to exceed 99% for samples sintered at 1573 K. The Lotgering orientation…
The aim of the present work is to develop a new type of flexible linear aliphatic alkoxy core bridged bisphenol cyanate ester (AECE) based POSS nanocomposites for low k applications. The POSS-AECE nanocomposites were developed by incorporating varying weight percentages (0, 5, and 10 wt %) of octakis (dimethylsiloxypr…
The effect of corona on high-voltage transmission lines is one of the causes power loss and this is uneconomical and undesirable. The study of corona and factors responsible for the loss is investigated through sample calculation based on Peek's formula and the results are then simulated through matlab program. This p…
Grain boundary dynamics and grain growth play a pivotal role in the fabrication of functional polycrystalline materials. However, not much is known about the delicate interplay between various microscopic processes that drive grain boundary motion which eventually culminates in the desired grain morphology. Colloidal…
Carbon nanoparticles were synthesized using laser ablation of a graphite target in dimethylformamide (DMF) using Nd:YAG laser with a wavelength of 1064 nm. The target was irradiated by the laser beam with a pulsed energy of 3 J, a pulsed repetition rate of 2 Hz and a pulsed duration of 5 ms. SEM images presented that…
Nuclear magnetic resonance (NMR) data for graphenes are mainly lacking in the literature. We provide quantitative first-principles quantum-chemical calculations of NMR chemical shifts and shielding anisotropies as well as spin-spin couplings and anisotropies for increasingly large, hexagon-like fragments of graphene,…
In the study, we successfully dissolved β-CD using an ionic liquid without molecular modification and electrospun the solution without polymer carriers. The XRD of the resulting fiber confirmed that β-CD molecules self-assembled and aggregated to form the fiber. The spinning conditions showed significant influences on…
Thiophene-S,S-dioxidized diarylethenes introducing bulky substituents at the reactive positions were newly synthesized. The diarylethenes showed reversible photochromism, whereas the photocycloreversion reaction was suppressed by thiophene-oxidation. The diarylethene closed-ring isomers having secondary alkyl groups a…
The increasing use of engineered nanomaterials (ENMs) will inevitably result in their release into natural environment and thereby lead to the exposure of living organisms. Hence, a new concern has arisen for the risk assessment of these emerging contaminants in the natural environment, especially in aquatic systems a…
The application of renewable raw materials encourages research in the biopolymers area. The Poly(Lacticco-Glycolic Acid)/Poly(Isoprene) (PLGA/IR) blend combines biocompatibility for application in the health field with excellent mechanical properties. The blend was obtained by solubilization of polymers in organic sol…
The effective annealing times (t(eff)) for nucleating various oxides from an amorphous matrix under nanosecond pulsed laser irradiation have been determined. The oxides, which had perovskite, bixbyite, anatase, and pyrochlore structures, showed similar t(eff) values for crystal nucleation of around 60 ns. This indicat…
Diamond layers can show different morphologies, i.e. well-facetted, fine-grained and ballas diamond. Additionally, the types NCD (nanocrystalline diamond), UNCD (ultra nanocrystalline diamond) and various types of amorphous carbon (a- C, a-CH …) are known. To characterise the various carbon deposits Raman spectroscopy…
Ecofriendly thermoplastic composites combining basalt fiber and polylactic acid were prepared and analyzed, considering effects when the fiber is silane treated. Intended to improve mechanical properties of the composites, the silane treatment varied the types of silane solution (water- and methanol-based solvents) an…
When water flows through hydraulic turbomachines, the local pressure can become low enough to vaporize the water and create vapor cavities. This phenomenon is called cavitation. When the cavities collapse, shock waves and liquid jets traveling through the inclusions can erode nearby solid surfaces. The collapse of cav…
We use the evolving surface finite element method to solve a Cahn- Hilliard equation on an evolving surface with prescribed velocity. We start by deriving the equation using a conservation law and appropriate transport for- mulae and provide the necessary functional analytic setting. The finite element method relies o…
The biosynthesis of nanoparticles has received increasing attention due to the growing need to develop safe, cost-effective and environmentally friendly technologies for nanomaterials synthesis. In the present investigation, we report, biomedical potential of silver nanopaticles synthesized from extract of Rosmarinus…
Cobalt ferrite (CoFe2O4) nanoparticles were successfully synthesized by a sol-gel combustion technique. The particle size as determined by a transmission electron microscope was about 25 nm. A maximum saturation magnetization of 22.31 emu/g and a coercivity of 118 Oe were achieved for the samples. The effect of CoFe2O…
The application of nanotechnology in the corrosion protection of metals has recently gained momentum; Environmental impact can improved by utilizing nanostructure particulates in corrosion inhibition, Nano composites have also proven to be an effective alternative to other hazardous and toxic compounds, the present ar…
To improve the nano-particle dispersion and interfacial compatibility of CaCO3 nanoparticles with styrene-butadiene rubber (SBR) latex, the surface of CaCO3 nanoparticles was modified with silane coupling agent. The microstructure and surface behavior of modified CaCO3 nanoparticles were systematically investigated by…