Materials Literature
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This article describes the synthesis and functions of phosphine or phosphine oxide functionalized networks (PP-P or PP-PO; PP = porous polymer). These materials were predominantly microporous and exhibited high surface areas (S(BET): 1284 and 1353 m(2) g(-1) for PP-P and PP-PO, respectively), with high CO2 (2.46 and 3…
In this article, we present a brief review about polymeric shape memory materials (SMMs) and typical applications of these materials for functioning as actuators. A couple of generic working mechanisms to enable the shape memory effect (SME) in materials are introduced, together with some relatively new shape memory p…
High–energy‐storage density capacitors with thin films of 0.5 Bi ( Ni 1/2 Ti 1/2 ) O 3 –0.5 PbTiO 3 ( BNT – PT ) were fabricated by chemical solution deposition technique on Pt / Ti / SiO 2 / Si substrates. The dense thin films with pure‐phase perovskite structure could be obtained by annealing at 750°C. High capacita…
The wettability of defective graphene and its relation with the interfacial property of water have not been well tackled. By conducting molecular dynamics simulations on the interactions between water and graphene with some vacancy defects, we show that the contact angle is more sensitive to the Stone–Wales (SW) and s…
Previous studies have revealed that dislocation structures in metals with medium-to-high stacking fault energy, depend on the grain orientation and therefore on the slip systems. In the present work, the dislocations in eight slip-plane-aligned geometrically necessary boundaries (GNBs) in three grains of near 45° ND r…
Various PEG-Vitamin E conjugates including d-α-tocopheryl poly(ethylene glycol) succinate 1000 (TPGS) have been extensively studied as a nonionic surfactant in various drug delivery systems. However, limited information is available about the structure-activity relationship of PEG-Vitamin E conjugates as a micellar fo…
Abstract magnified image Silicon nanowires have attracted great interest in recent years due to their ideal interface compatibility with silicon‐based electronic technology and their various potential applications, such as energy harvest and generation, and thermal management. A variety of theoretical and experimental…
The objective of the study is to establish a quantitative relationship between air gap sizes and clothing thermal performance. Using a three-dimensional human body scanner, the thicknesses and volumes of air gaps of 35 experimental shirts were measured. Relationships between the thermal insulations of clothing, measur…
In this study, we investigate structural stability, and electronic and transport properties of Fe terminated/doped armchair graphene nanoribbons (AGNR) through first-principles calculations based on density functional theory. Results show that substitutional Fe impurities have a stable bonding with AGNR and center of…
Natural fibers can be used in rotational molding process to obtain parts with improved mechanical properties. Different approaches have been followed in order to produce formulations containing banana or abaca fiber at 5% weight, in two- and three-layer constructions. Chemically treated abaca fiber has also been studi…
In this paper, a broadband metamaterial absorber (MA) based on a multi-layer structure is presented. The advantages of this MA are the small periodic unit size, they are thin, have excellent polarization characteristics and are adaptive for wide angles of oblique incident electromagnetic waves. The unit cell of the br…
A facile reflux method has been developed to prepare porous NiO samples using NaBH4-EG and NaOH-EG as alkaline precipitants, respectively. NaBH4-EG is used as alkaline precipitant for the first time. Precipitants influence the morphology and structure of NiO significantly, further affect their specific capacitances as…
A lead-free ferroelectric: The occurrence of ferroelectricity is demonstrated in a silicate-based compound (Bi2SiO5, see picture), by direct observation of polarization switching. The mechanism of ferroelectricity in Bi2SiO5 has been studied by Raman scattering, transmission electron microscopy, X-ray powder diffracti…
Controlling degradation of magnesium or its alloys in physiological saline solutions is essential for their potential applications in clinically viable implants. Rapid degradation of magnesium-based materials reduces the mechanical properties of implants prematurely and severely increases alkalinity of the local envir…
In this study, a simple fluorogenic immunoassay based on in situ formation of semiconductor quantum dots (QDs) is described. We discovered that alkaline phosphatase (ALP), the enzyme broadly used in enzyme-linked immuno-sorbent assay (ELISA), is able to trigger formation of fluorescent CdS QDs. ALP-catalyzed hydrolysi…
Cuttlefish chitosan was extracted from the cuttlebone of Sepiella inermis by demineralization and deproteinization and produced by deacetylation, and its physical and chemical parameters were also compared with that of commercial chitosan. Ash, moisture, and mineral and metal content of the chitosan was estimated by a…
This report describes the metabolic and lipidomic profiling of 97 low-molecular weight compounds from the primary metabolism and 124 lipid compounds of the diatom Thalassiosira pseudonana. The metabolic profiles were created for diatoms perturbed for 24 hours with four different treatments: (I) removal of nitrogen, (I…
The enthalpic incompatibility of organic polymer matrices and high surface energy inorganic nanoparticles often leads to phase separation in polymer nanocomposites (PNC) precluding the realization of anticipated property enhancements. The grafting of polymer chains to nanoparticles holds promise as a means for control…
There are many uncertainties regarding the hazard of nanosized particles compared to the bulk material of the parent chemical. Here, the authors assess the comparative hazard of two nanoscale (NM-211 and NM-212) and one microscale (NM-213) cerium oxide materials in 28-day inhalation toxicity studies in rats (according…
Density functional theory calculations have been performed to assess the electronic structure of graphene overlaid with a monolayer of electro-active conjugated molecules, being either electron donors or electron acceptors. Such a noncovalent functionalization results in a work function modification that scales with t…