Materials Literature
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The role of the physical properties of multiwall carbon nanotubes on the strain-sensing piezoresistive behavior of multiwall carbon nanotube/polymer composites is systematically studied using three types of multiwall carbon nanotubes as fillers of a brittle thermosetting (vinyl ester) and a tough thermoplastic (polypr…
This review focuses primarily on the recent developments in the synthesis of hyperbranched polymers and their application in analytical chemistry.
A controlled sol-gel synthesis incorporated with electrospinning is employed to produce polyacrylonitrile-silica (PAN-silica) fibers. Hybrid fibers are obtained with varying amounts of silica precursor (TEOS in DMF catalyzed by HCl) and PAN. Solution viscosity, conductivity, and surface tension are found to relate str…
Novel amphiphilic mesostructured polyoxometalate-based ionic hybrids have been successfully synthesized through designing new POSS-derived mesoporous poly(ionic liquids) (POSS-BM x ) to interact with Keggin-type phosphotungstic acid (PW). The obtained ionic hybrids POSS-BM x -PW have good thermal stability, adjustable…
The loading of iron and the formation of activated carbon were combined to one step and the thus-obtained Fe/activated carbon showed good catalytic performance for phenol hydroxylation.
Caged compounds are widely used by neurophysiologists to study many aspects of cellular signaling in glia and neurons. Biologically inert before irradiation, they can be loaded into cells via patch pipette or topically applied in situ to a defined concentration; photolysis releases the caged compound in a very rapid a…
Natural materials have been a fundamental part of human life since the dawn of civilization. However, due to exploitation of natural resources and cost issues, synthetic materials replaced bio-derived materials in the last century. Recent advances in bio- and nano-technologies pave the way for developing eco-friendly…
Understanding the dynamic charge storage in nanoporous electrodes with room-temperature ionic liquid electrolytes is essential for optimizing them to achieve supercapacitors with high energy and power densities. Herein, we report coarse-grained molecular dynamics simulations of the cyclic voltammetry of supercapacitor…
Zwitterionic polymers have shown ultra-low biofouling properties at surfaces and excellent biocompatibility as implant. In this study, an in situ-forming zwitterionic hydrogel was designed and evaluated, both in vitro and in vivo, as a long-term vitreous substitute. The zwitterionic polymer poly(MPDSA-co-AC) was desig…
ABSTRACT In this study, low‐density polyethylene (LDPE) nanocomposite films with two types of nanoparticles, TiO 2 (3 wt %) and Closite 20A (3 and 5 wt %), were prepared using a melt blow extrusion as an industrial method and their properties such as mechanical properties, water vapor, oxygen and carbon dioxide gas ba…
With the aim of improving the toughness of ceramic materials, laminated composites have been successfully developed since Clegg et al. (1990) inserted weak interfaces using very thin graphite layers between silicon carbide sheets and obtained a composite that exhibited non-catastrophic fracture characteristics. The we…
We use a combination of dynamical mean-field model calculations and LDA + U material specific calculations to investigate the low temperature phase transition in the compounds from the $({\mathrm{Pr}}_{1\ensuremath{-}y}R{}_{y}){}_{x}{\mathrm{Ca}}_{1\ensuremath{-}x}{\mathrm{CoO}}_{3}$ $(R=\text{Nd,}\phantom{\rule{4.pt}…
This work investigated the microstructural evolution of Al–7Si–Mg alloy cast semi-solid using a cooling slope as well as conventional casting followed by equal channel angular pressing (ECAP) in a 120° die. Feed materials were prepared for ECAP by cooling slope casting and by conventional casting. The microstructure o…
We apply atomistic simulation techniques to address whether oxygen shows higher diffusivity at the grain boundary region compared to that in bulk UO2, and whether the relative diffusivity is affected by the choice of the grain boundary. We consider coincident site lattice grain boundaries, Σ3, Σ5, Σ9, Σ11 and Σ19, exp…
The synthesis, photophysical and electrochemical properties as well as theoretical calculation studies of a newly designed triphenylamine derivative are described. This original compound displays one neutral form, three oxidized forms, and two protonated forms with distinct photophysical characteristics. The interplay…
A simple dipping-and-polymerization method to prepare an interesting electrode material consisting of PPy-coated wood transverse section slice (WTSS), and fabricated an eco-friendly wood-based solid-state flexible supercapacitors.
Abstract Selected allotropes of phosphorus are investigated by different levels of density functional theory (DFT) calculations to evaluate the relative stability orders with a special focus on the role of van der Waals interactions. Phosphorus is an excellent reference system with a large number of allotropes. Starti…
The infiltration of transition metals into biopolymers by means of vapor-phase processes has been shown to unusually change the bulk mechanical properties of those materials. Here, for the first time, a novel, single precursor infiltration process was applied to cellulose. The mechanical properties, as measured throug…
This paper demonstrates a tunable terahertz (THz) filter and a modulator based on an electrostatic micro electro mechanical systems (MEMS) reconfigurable split ring resonator (SRR) array. The device uses tunable metamaterial concept, in which an RF-MEMS (radio frequency-MEMS) capacitor is embedded in each SRR unit cel…
Direct arylation polycondensation represents a promising alternative to the currently used aryl-aryl coupling schemes for conjugated polymer synthesis that is characterized by a potentially lower impact on the environment and reduced costs. However, scope and limitations of this novel protocol are not fully understood…