Materials Literature
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This paper presents a simple and effective strategy to construct a UV photodetector based on ZnS hollow-spheres by oil–water interfacial self-assembly of polystyrene (PS)/ZnS colloidal nanospheres followed by annealing treatment. In this approach, PS/ZnS colloidal nanospheres were prepared and then self-assembled into…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation J. Vorberger, D. O. Gericke; Theory of electron-ion energy transfer applied to laser ablation. AI…
Electro-optical/infrared (EO/IR) sensors and photovoltaic power sources are being developed for a variety of defense and commercial applications. One of the critical technologies that will enhance both EO/IR sensor and photovoltaic module performance is the development of high quality nanostructure-based antireflectio…
We have investigated the effect of water (H 2 O) cooling and heat treatment on the luminescence efficiency of core CdSe quantum dots (QDs). The photoluminescence (PL) quantum yield of the CdSe QDs was enhanced up to ~85%, and some periodic bright points were observed in wide color ranges during the heat treatment of Q…
Monolithic porous silica and carbon structures have been obtained by the synthesis of silica inside the aqueous phase of a sponge-like Swollen Liquid Crystal, and the parallel preparation of carbon replica.
Here we report the transformation of ordered mesoporous Cu/Cu2O into porous Cu2O nanowires in ethanol. This transformation may be initiated by the oxidation of metallic Cu in the intergrowth Cu/Cu2O mesostructure by O2 dissolved in ethanol, and the formed Cu2O nanoparticles then self-assemble into 1D nanowires. The Cu…
A method to detect the intrinsic capacitance and thickness of graphene nanosheets (GNS) was developed. The ultrasonic-dispersed GNSs were separated by a kind of small-powder graphite (SG, 0.5–2 μm) with almost no capacitance to prevent the ultra-thin graphene layer from restacking face to face. In order to separate th…
Single-phase tungsten carbide nanopillar arrays have been prepared by hot filament chemical vapor deposition with carbonized tungsten filaments as precursors. The structural properties and morphologies of the nanopillar arrays were characterized by XRD, SEM and HRTEM, respectively. A possible formation mechanism for t…
Lanthanide zirconate phases Ln(2)Zr(2)O(7) and Ln(4)Zr(3)O(12) (Ln = Y, La, Gd, Dy, Ho, Yb) have been prepared using a microwave induced plasma methodology, which allows rapid synthesis using materials which do not couple directly with microwaves at room temperature. We describe the measurement of heating profiles of…
L’étude des fibres de lin comme renfort de matrice polymère a commencé au début des années 2000 et a déjà mis en évidence leur capacité à remplacer efficacement les fibres de verre. Dans cette étude, l’influence de l’eau sur le comportement mécanique des fibres végétales est mise en avant. Les premiers résultats de me…
Gypsiferous and saline soils are among the major soils of arid and semi-arid regions of the world.Although numerous studies on salic, gypsic and petrogypsic horizons have been carried out, the co-occurrence of gypsum and halite and their morphological expression are still poorly documented.Eight pedons located on a co…
In this work, a simple hydrothermal method is presented for fabricating hierarchically porous silica nanocubes using a surfactant-polyelectrolyte template. The formed silica nanocubes possess Pmn symmetry, which are patterned after organic template and their shape can be easily transformed from solid nanocubes to holl…
Alterations in the synthesis methodology concerning emulsion templated biocatalyzed silicification provide control over the morphology of SiO(2)-hybrid structures.
In this article, elastic buckling of rectangular flexural micro plates (FMPs), using a higher continuity p-version finite-element framework based on Galerkin formulation, is investigated. The invariant form of governing equation for microplates with nonlocal effects based on "modified couple stress theory" is extended…
The deformation and fracture of a PBX simulant were studied in this work. A pre-cracked semi-circular bending sample was loaded using a SHPB. The failure process of the sample was recorded in situ using a high speed camera. Based on the recorded images corresponding to the loading steps, the displacement and strain fi…
Au doped silica glass was fabricated by use of SiO2–PVA nanocomposite. Porous inorganic–organic nanocomposite, which has nanometer sized pores, was prepared from fumed silica and poly(vinyl alcohol) (PVA). HAuCl4 solution impregnated the porous SiO2–PVA nanocomposite, and then Au ion was reduced and Au metal nanoparti…
Fluorescent microspheres consisting of a conjugated phenylenevinylene 3B2B doped with a fluorenone derivative DSFO were prepared by a reprecipitation method. The DSFO-doped 3B2B microspheres (DMPs) exhibited significantly reduced fluorescence from 3B2B (donor) and strongly enhanced emission from DSFO (acceptor), which…
Constrained recovery of a compressively prestrained shape memory alloy (SMA) is experimentally and theoretically investigated. Thermomechanical properties of the SMA during the process of constrained recovery are experimentally obtained. Optimization of geometry in buckling of an ideally straight, simply supported col…
Features of the plastic deformation of solid Al–Li solutions with microstructures formed by direct and angular hydroextrusion are studied under tension at temperatures of 4.2–350 K. It is found that the grain size reductions, increases in the average density of defects, and changes in the orientational textures during…
The crystallization behaviour and morphology of a polymer blend based on branched poly(p-dioxanone)–poly(lactic acid) block copolymer (PLA-b-LCB-PPDO) and linear PPDO with immiscible PPDO and PLA blocks has been investigated. Although the PPDO and PLA blocks are immiscible with each other, an interesting interpenetrat…