Materials Literature
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Raman spectroscopy/mapping is used to investigate the variation of Si phonon wavenumbers, i.e., lower wavenumber (LW ~ 495–510 cm−1) and higher wavenumber (HW ~ 515–519 cm−1) phonons, observed in Si–SiO2 multilayer nanocomposite (NCp) grown using pulsed laser deposition. Sensitivity of Raman spectroscopy as a local pr…
Aqueous silver nanocolloid was synthesized in a single step by a biogenic approach using aqueous leaf extract of Lippia javanica plant which acts as both reducing as well as capping agent. The as-synthesized silver nanoparticles were characterized by UV–visible absorption spectroscopy, high-resolution transmission ele…
ABSTRACT In the present work, poly (lactic acid)/thermoplastic starch/gelatin sheets were produced by calendering–extrusion process and silver nanoparticles (AgNPs, synthesized by chemical reduction with d‐glucose), were incorporated at sheet surfaces to promote antimicrobial activity. A gelatin solution containing Ag…
ABSTRACT In this study, polyurethane prepolymer (PUP) was prepared by the reaction of Poly‐1,4‐butylene glycol adipate diol (PBA) and 4,4′‐Methylenedi‐p‐phenyl diisocyanate (MDI). The as‐prepared PUP was then blended with Polylactide (PLA), and the impact of the PUP on the blends regarding their structure and properti…
In situ high-pressure Raman spectroscopy and ab initio calculations are carried out to investigate the phase stability and the thermal expansion behavior of ${\mathrm{H}}_{3}[\mathrm{Co}(\mathrm{CN}{)}_{6}]$. Raman studies at high pressures in a diamond anvil cell identify soft phonons and phase instability at 2.3 GPa…
The room temperature multiferroic ${\mathrm{BiFeO}}_{3}$, by far the most studied experimentally, exhibits outstanding ferroelectric properties with a cycloidal magnetic order in the bulk and many unexpected advantages for possible applications in spintronics, sensor techniques, and photovoltaics. To consider ferroele…
The aim of this study was to evaluate the effect of different morphologies of solvent-exchanged (NFCSE), spray-dried (NFCSD), and freeze-dried (NFCFD) nano-fibrillated cellulose on the susceptibility to surface modification with the acetic anhydride/pyridine system. The degree of substitution (DS), morphology, degree…
Much evidence has been reported that charged nanoparticles are generated in the gas phase and contribute to film deposition or nanostructure formation in the chemical vapor deposition (CVD) process. Such a new way of crystal growth with nanoparticles as a building block is closely related to a recently discovered nonc…
Undoped and Ni-doped TiO2 thin films have been prepared by sol-gel dip-coating method on glass and silicon substrates. X-ray diffraction studies show that both TiO2 and Ni-doped TiO2 thin films are of anatase phase with (1 0 1) as preferential orientation. From the UV-visible spectroscopy analysis, all films exhibits…
Abstract The fast ionic, high temperature (HT) phase of LiBH4 can be stabilized by Br? substitution. Lithium borohydride bromide compounds, Li(BH4)1?xBrx, have been synthesized mechanochemically, with and without thermal treatment and the resulting phase behavior determined as a function of composition. Single phase m…
Detailed description and exploitation of materials in nanoscale have become an obvious part of polymer-based composites with the speedy progression of nanotechnology. This review will focus on some of the nanocharacterization techniques that are most frequently used in current research of composite structures with an…
Two DendriMac polymers (Dendri-hydr and Dendri-click) are efficiently and conveniently synthesized via the combination of living anionic polymerization (LAP) and hydrosilylation/click chemistry. Based on the end-capping of DPE derivatives (DPE-SiH and DPE-DA) toward polymeric anions, the polymeric core and arms are ef…
This article reports the development of halogen-free flame-retardant amine-terminated cyclophosphazene (ATCP) and functionalized rice husk ash (FRHA)-reinforced cyanate ester (CE; 2,2-bis(4-cyanatophenyl)propane)-based epoxy (EP) composite material through the ring formation of cyanurate and imino carbonyl adduct form…
A controlled release formulation for the insect pheromone hexenoic acid (HE) was successfully developed using zinc-layered hydroxide (ZLH) as host material through a simple coprecipitation technique, resulting in the formation of inorganic-organic nanolayered material with sustained release properties. The release of…
Bi 2 Te 3 and CoSb 3 based nanomaterials were synthesized and their thermoelectric, structural, and vibrational properties analyzed to assess and reduce ZT ‐limiting mechanisms. The same preparation and/or characterization methods were applied in the different materials systems. Single‐crystalline, ternary p‐type Bi 1…
Effect of LiNbO3 ferroelectric substrate on the carrier mobility in top gated graphene field-effect transistors (G-FETs) is demonstrated. It is shown that, at the same residual concentration of the charge carriers, the mobility in the G-FETs on the LiNbO3 substrate is higher than that on the SiO2/Si substrate. The eff…
Molecular dynamics (MD) simulations on a model of pure Fe have been used in the investigation of solid-state nucleation of a body-centered-cubic (BCC) phase from a polycrystalline face-centered-cubic (FCC) matrix. A neighbor vector analysis (NVA) method has been introduced and it is shown how the NVA can be used to de…
An improved analysis method to calculate the eddy-current losses in large power transformer tank walls is presented. In this model, the perpendicular magnetic flux density has been obtained at discrete points on the surface of the tank by the finite-element method (FEM). A double Fourier series is adopted to express t…
ABSTRACT Commercial unsaturated polyester (UPE) resins typically contain a high amount of volatile toxic styrene. A non‐volatile acrylated epoxidized soybean oil (AESO) was found to be an excellent replacement of styrene in a commercially available UPE resin [designated as Styrene‐(PG‐IPA‐MA)] that is derived from pro…
Recent progress of epitaxial graphene on SiC was reviewed, focusing on its growth and structural and electronic features. Homogeneous graphene can be grown on SiC(0001) on a wafer scale, however on SiC(\(000\bar{1}\)) multilayer but rotationally stacked graphene with monolayer like electronic property grows. HRTEM rev…