Materials Literature
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Abstract Regenerated Antheraea pernyi silk fibroin film was prepared by dissolution of native silk fiber in aqueous lithium thiocyanate. The influence of aqueous ethanol treatment of the dried regenerated film on molecular conformation was studied by X‐ray diffraction, infrared spectroscopy, differential scanning calo…
Labeling stem cells with FDA-approved superparamagnetic iron oxide particles makes it possible to track cells in vivo with magnetic resonance imaging (MRI), but high intracellular levels of iron can cause free radical formation and cytotoxicity. We hypothesized that the use of cationic liposomes would increase labelin…
Nearly 30 years after theoretical prediction, a stable and well-characterized compound that covalently links tetrathiafulvalene and tetracyanoquinodimethane fragments has been synthesized (1, see scheme). The extremely low HOMO–LUMO gap of 1 (0.17 eV) allows the first observation of thermoexcited electron transfer in…
The paper deals with the computation of very fast transient overvoltages (VFTOs) in transformer windings. For this purpose, an algorithm is developed. The applied algorithm uses a hybrid model which is a combination of the multi-conductor transmission line model (MTLM) and the single-transmission line model (STLM). By…
Abstract Morphology and fracture mechanisms in two nanoclay‐filled epoxy systems were investigated using both microscopy and spectroscopy tools. Clay exfoliation was achieved using a series of sample preparation steps, and confirmed using wide angle X‐ray diffraction (XRD) and transmission electron microscopy (TEM) te…
Abstract The structures of a series of nickel‐ and magnesium‐based hydrotalcites were explored using Raman microscopy. These natural hydrotalcites are based upon sulphate or carbonate being the counter anion in the interlayer. Variation in the position of the sulphate stretching vibrations occurs and is mineral depend…
We report free space transmission and the first reflection measurements of a composite double negative (DNG) metamaterial, also known as a left-handed material (LHM). The metamaterial composes of the split-ring-resonators and discontinuous thin wires. Very high transmission values of the metamaterial are observed with…
Flow chambers are commonly used to study microbial adhesion to surfaces under environmentally relevant hydrodynamic conditions. The parallel plate flow chamber (PPFC) is the most common design, and mass transport occurs through slow convective diffusion. In this study, we analyzed four different PPFCs to determine whe…
A novel cubic bicontinuous morphology is found in polymer-ceramic nanocomposites and mesoporous aluminosilicates that are derived by an amphiphilic diblock copolymer, poly(isoprene-b-ethylene oxide) (PI-b-PEO), used as a structure-directing agent for an inorganic aluminosilicate. Small-angle X-ray scattering (SAXS) wa…
This paper presents a method of calculating the elements of the generalized matrix representation of the macroscopic constitutive relations for a three-dimensional (3-D) array of non-magnetic inclusions with arbitrary shape. The derivation is based on the quasi-static Lorentz theory and the inclusions are represented…
Biodegradable porous scaffolds for heart tissue engineering were prepared from amorphous elastomeric (co)polymers of 1,3-trimethylene carbonate (TMC) and D,L-lactide (DLLA). Leaching of salt from compression-molded polymer-salt composites allowed the preparation of highly porous structures in a reproducible fashion. B…
Substantially more attention has been given in the past to shape memory alloys and shape memory ceramics than to shape memory polymers because unreinforced shape memory polymers have much lower stiffness and recovery force potential than shape memory alloys and shape memory ceramics. However, when incorporated into a…
An entirely synthetic method is used to produce hierarchically ordered porous silica materials in a one-pot synthesis, with ordering on three different scales; that is, macropores (200–800 nm), interconnecting windows (70–130 nm), ordered mesoporous walls (80 nm) with narrow micropores (<2 nm) in the presence of multi…
Recent advances in analytical and computational modelling frameworks to describe the mechanics of materials on scales ranging from the atomistic, through the microstructure or transitional, and up to the continuum are reviewed. It is shown that multiscale modelling of materials approaches relies on a systematic reduct…
Magnetic resonance contrast agents, particularly the gadolinium-based agents, are extremely safe and lack the nephrotoxicity associated with iodinated contrast media. Currently, seven gadolinium agents are available in one or more countries of the world, of which only four are available for clinical use in the United…
Atrial Fibrillation (AF) is thought be caused by oxidative stress. Oxidative stress at the cellular level results from many factors, including exposure to alcohol, medications, cold, toxins or radiation. In this study we investigated gene transcriptional profiles on the human myocardial tissues from AF and oxidative s…
By studying model systems consisting of poly(ethyl acrylate) polymer chains covalently bound to silica particles, we show here how the temperature dependence of the modulus of filled elastomers can be explained by a long-ranged gradient of the polymer matrix glass transition temperature in the vicinity of the particle…
The CAIB requested these data be included in this Appendix. This Appendix is a summary of present and past efforts that were initiated to characterize the moisture absorption capability of sprayed-on-foam-insulation (SOFI) and specifically, BX-250.
In this article, cetyltrimethylammonium bromide (CTAB)-capped gold nanoparticles were synthesized successfully by using CTAB as a phase-transfer catalyst and stabilizer simultaneously in a two-phase toluene/water system. The as-prepared gold nanoparticles were characterized and analyzed by virtue of X-ray photoelectro…
Recently a new theory of viscosity of concentrated emulsions dependency on volume fraction of droplets (Starov V, Zhdanov G: J. Colloid Interface Sci, 258, 404 (2003)) has been suggested that relates the viscosity of concentrated emulsions to formation of clusters. Through experiments with milk at different concentrat…