Materials Literature
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Barium osumilite (BMAS) ceramic matrix composites reinforced with SiC-Tyranno fibers are tested in a cyclic loading protocol. Broadband acoustic emission (AE) sensors are used for monitoring the occurrence of different possible damage mechanisms. Improved use of AE indices is proposed by excluding low-severity signals…
Molecular self-assembly of biomolecules, especially proteins and peptides has elucidated much interest in recent years due to the reproducibility of structures and the high degree of control on the formation kinetics and morphology by varying the self-assembling conditions. These self-assembled structures have found w…
The time-dependent adsorption of 1-pyrenebutyric acid, a model compound for polyaromatic carbon adsorption, onto graphene nanoplatelet-single-wall carbon nanotube hybrid papers is investigated experimentally based upon changes in optical absorption spectra.
Herein, we present a general route towards defined nanohybrids, comprised of a fluorescent quantum dot (QD) or superparamagnetic iron oxide (Fe2O3) nanocrystal core and a tuneable corona of plasmonic gold or silver nanoparticles (NPs), adhered by a cross-linked poly(isoprene)-b-poly(ethylene glycol) diblock copolymer…
We report the synthesis of multicomponent surface architectures composed of phthalocyanines (Pc), porphyrins (TPP) and naphthalenediimides (NDI). Naphthalenediimide stacks are grown first by self-organizing surface initiated disulfide-exchange polymerization (SOSIP). An oriented redox gradient driving electrons toward…
We present Monte Carlo simulations of colloidal particles pulled into grafted polymer layers by an external force. The insertion free energy for penetration of a single colloid into a polymer layer is qualitatively different for surfaces with an ordered and a disordered distribution of grafting points and the tendency…
A direct flame fuel cell setup is designed and built based on a multi-element diffusion flame burner (MEDB). Flame temperature measurements are made using a fine-wire S-type thermocouple to characterize the flat flame burner performance. The MEDB is proven to provide uniform, ∼1D conditions above the surface of the bu…
This brief focuses on the impact of basic circuit parameters to the initiation of characteristic ferroresonance states. Basic circuit parameters analyzed in this brief are the coil nominal voltage (which results to a range of inductance values and knee points for the coil characteristics), circuit capacitance, and the…
The chemical bonding analysis using the adaptive natural density partitioning method of the C4F fluorinated graphene sheet revealed a chemical bonding model explaining its particular stability. We proposed that the stability of the C4F fluorinated graphene is due to the so-called "benzation" of graphene. On the basis…
In this paper we report on a new use for dark-field microscopy in order to retrieve two-dimensional maps of optical parameters of a thin sample such as a cryptograph, a histological section, or a cell monolayer. In particular, we discuss the construction of quantitative charts of light absorbance and scattering coeffi…
Carbon nanotubes (CNTs) have potential as not only electrical materials but also biomedical devices. However, some findings have been reported indicating that the use of CNTs is accompanied by a risk of the development of certain diseases such as pulmonary fibrosis and pleura mesothelioma; and one of the reasons for t…
Hexagonal GdF3 is a more efficient phosphor host compared with the traditional orthorhombic form but the hexagonal phase is thermodynamically unstable at room temperature. Herein, we present a strategy to stabilize hexagonal GdF3 by doping with alkaline-earth ions in a mild hydrothermal reaction system. The selection…
Continuous self-assembled growth of both the organic and inorganic components of materials with nacre-like structure is achieved upon mineralisation of chitin and chitosan scaffolds using a combined soaking method and the inclusion of poly(acrylic acid) and chitosan oligomers as additives.
We report a facile synthesis of water-soluble, ultrasmall, PEGylated MnxFe3−xO4 nanoparticles (MFNPs) (x = 0–0.34) and the Mn(II) doping effects on T1- and T2-weighted magnetic resonance imaging (MRI). By adjusting the reaction conditions, the ‘x’ value can be continuously tuned from 0 to 0.34. The produced MFNPs are…
Large scale reduced graphene oxide (RGO) with sulfonic acid groups (SRGO) has been synthesized by a one-step facial method for high performance electrochemical capacitors (ECs). The as-prepared SRGO shows an enhanced specific surface from 254 to 434 m2 g−1 and bulk conductivity from 2 × 10−4 to 2.5 × 10−4 S m compared…
In this work, we synthesized a conjugated polyschiff base (PSB) from N,N′-bis(4-aminophenyl)-N,N′-bis(β-naphthyl)-bisphenylenediamine and 2,5-thiophene-dialdehyde through condensation polymerization, in which the triphenylamine (TPA) core acted as an electron donor and hole transporting material, subsequently the poly…
Conditions of pulse-periodic laser action with thermocycling for formation of a nanoporous structure consisting of principally channel-type nanosize pores in two-component Cu-Zn alloy “brass of 62%” are experimentally defined. The transformation of laser radiation into a light spot with uniform distribution of power d…
ABSTRACT In the present work, the effect of rice husk filler loading (10%, 20%, 25%, 30%, and 35%) on the mechanical properties of recycled low density polyethylene (RPE) and mixed with 20 percent weight fraction of virgin polyethylene (MPE) composites was aimed to be investigated. The waste polyethylene was blended w…
Polyols – produced today at a millions of tons scale by hydrogenation or fermentation of carbohydrates from renewable raw materials – have become a valuable “natural” ingredient in a wide range of applications in the food, cosmetics, pharmaceutical, chemical and technical industry. Beyond sweetness at low calorific va…
Crystalline silicon is the world’s workhorse for tapping the power of the sun. The past has seen a fast growth of the production volume that professionalized the evolutionary development and continuously generated innovations. We briefly describe recent progress in the three fields of (i) p-type screen-printed cells,…