Materials Literature
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This brief review describes the different types of semiconductor quantum dot systems, their main applications and which types of microscopy methods are used to characterize them. Emphasis is put on the need for a comprehensive investigation of their size distribution, microstructure, chemical composition, strain state…
In this study, a novel bioelastomer nanocomposite with well-dispersed silica nanoparticles is prepared via anionic polymerization of polybutadiene rubber and epoxidized soybean oil. A substantial enhancement of uniform dispersion of silica nanoparticles within bioelastomer was found to impart improved surface energy o…
Preventing protein aggregation is a major goal of biotechnology. Since protein aggregates are mainly comprised of unfolded proteins, protecting against denaturation is likely to assist solubility in an aqueous medium. Contrary to this concept, we found denatured total cellular protein mixture from mammalian cell kept…
This work presents the synthesis, redox behavior and spectroscopic characterization of two novel compounds Sodium 4-(3-methoxyphenyl) piperazine-1-carbodithioate and sodium 4-(4-nitrophenyl) piperazine-1-carbodithioate. Pulse voltammetric techniques were utilized to determine the number of electrons involved in the ox…
In this study, silver nanoparticles production was performed by the green chemistry the Zanjan gold mine. The formation of nanosilvers was primarily confirmed by observation of color changing from colorless to brownish and UV-visible spectroscopy after 72 h of the reaction. The XRD spectrum exhibited 2θ values corresp…
Ultrasonic senders with DC-biased piezoelectret films were built and characterized. The generated sound pressure of the transducers is inversely proportional to the distance from the transducer and proportional to transducer size, AC-voltage, square of the frequency, and effective d33-coefficient of the films. With po…
The Raman and absorption spectra of a Ag2–PATP–Au2 junction adsorbed on graphene and boron-doped graphene were investigated by using density functional theory (DFT) and time-dependent DFT methods. The interactions between the graphene and junction result in charge transfer (CT) from the graphene to the junction due to…
The calculation of single- and multi-crystal data collection strategies and a data processing pipeline have been tightly integrated into the macromolecular crystallographic data acquisition and beamline control software JBluIce . Both tasks employ wrapper scripts around existing crystallographic software. JBluIce exec…
The linkage of single-walled carbon nanotube junctions by the photochemistry of organometallic chromium reagents produces dramatic increases in network conductivity.
Artificial superlattices of ferroelectric Bi0.5Na0.5TiO3 and BaTiO3 have been successfully grown on (001) insulator or conductive SrTiO3 substrates by pulsed laser deposition. In these epitaxial layered structures, the BaTiO3 layers were shown to contribute to an improvement of the two dimensional growth of the Bi0.5N…
A closed-loop strategy is developed for controlling batch cooling multicomponent crystallization. The strategy represents the sequential application of two established feedback control techniques: direct nucleation control followed by supersaturation control. Experimental results show that such a control scheme produc…
One package heat curable polyurethane system typically requires blocked isocyanates with a relatively low deblocking temperature. In this study, a series of new aromatic secondary amines blocked polymeric methylene diphenyl diisocyanate (pMDI) was synthesized and characterized. Hot-stage FTIR, DSC and TGA spectroscopi…
Abstract Monoclinic and cubic europium‐doped Gd 2 O 3 structures were selectively synthesized by the glycine–nitrate process by fine control of the synthesis temperature through the crucial fuel/oxidant ratio. The cubic phase is obtained under fuel‐rich conditions, whereas stoichiometric conditions induce the simultan…
The galvanic corrosion behavior of an AA2024-T3 alloy and mild steel couple has been studied with attention paid to the effect of solution temperature. AA2024-T3 is anodic to mild steel at room temperature, but polarity reversal of the couple starts (from a temperature as low as 35°C upwards) when the couple is introd…
This paper aims to increase the knowledge on the crystallinity features of diblock copolymers based on poly(∊-caprolactone) (PCL) and poly(L-lactic acid) (PLLA). Six diblock copolymers have been synthesized starting from a synthesized PCL with a molecular weight of around 5000 g mol −1 , varying the molecular weight o…
We present nonequilibrium molecular dynamics (NEMD) simulation results for the miscibility, structural properties, and melt rheological behavior of polymeric blends under shear flow. The polymeric blends consist of chemically identical linear polymer chains (187 monomers per chain) and dendrimer polymers of generation…
One of the major issues associated with the use of borohydride complexes for hydrogen storage is the thermodynamic stability of these materials, with the Group I and II complexes also requiring the most demanding temperatures to facilitate dehydrogenation. In recent years, the idea of modulating thermodynamic properti…
In contrast to the conventional doping of bulk silicon (Si), the doping of Si nanocrystals (NCs) that are often smaller than 5 nm in diameter may lead to serious structural changes. Since the electronic and optical properties of Si NCs are intimately associated with their structures, it is critical to understand how d…
This article pays tribute to the contributions of Professor Sidney B. Lang in the field of pyroelectricity of materials of biological relevance since his discovery in 1966 of pyroelectricity in bone and tendon. The article sets the perspective to understand the significance of this discovery and summarizes key progres…
ABSTRACT Poly(lactic acid) (PLA) and chitosan (CS) are two natural resource polymers, which have been applied widely into different fields. Polymer composites based on PLA and CS have some advantages such as good adhesion, biodegradability, biocompatibility, and high stability. They can be prepared by different method…