Materials Literature
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In this study, facile and ecofriendly methods have been developed for the biosynthesis of silver nanoparticles from silver nitrate using the seed extract of Strychnos potatorum, a natural phytocoagulant. The effect of room temperature stirring, water bath heating and autoclaving on nanoparticle synthesis was studied.…
In this article, we report a simple approach to generate micropillars (whose top portions are covered by sub-micron wrinkles) on the inner surfaces of polystyrene (PS) microchannels, as well as on the top surface of the PS substrate, based on strain-recovery deformations of the PS and oxygen reactive ion etch (ORIE).…
We report the synthesis and properties of a series of spiro-bis(3,4,6,7-tetrachalcogenide-substituted-phenalenyl)boron salts and two of the corresponding tetrathioalkyl-substituted spiro-bis(phenalenyl)boron radicals [tetrathiomethyl (10) and tetrathioethyl (11)] in which all of the active positions of the phenalenyl…
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 Hanqing Zhao, Xin Peng, Linxing Zhang, Jun Chen, Wensheng Yan, Xianran Xing; Large remanent polar…
Silver and magnetic (Fe3O4) nanoparticles have attracted wide attention as novel antimicrobial agents due to their unique chemical and physical properties. In order to study the comparative effects on antibacterial and animal cytotoxicity, Staphylococcus aureus and NIH 3T3 fibroblasts were used, respectively. Both nan…
Epitaxial nanographene grown on SiC substrate is of great interest for electronic and optoelectronic applications. The shape and the size of nanographene dictates its electrical, optical, magnetic, and chemical properties including possible edge states and quantum confinement. Here, we report the epitaxial growth of n…
The doping of rare‐earth oxides can greatly improve the electrical characteristics of ZnO varistors. Thermally stimulated current ( TSC ) characteristic test, capacitance voltage ( C–V ) characteristic test, scanning electron microscope ( SEM ) test, and voltage current ( V–I ) test were carried out to study the influ…
Via event-driven molecular dynamics simulations and experiments, we study the packing-fraction and shear-rate dependence of single-particle fluctuations and dynamic correlations in hard-sphere glasses under shear. At packing fractions above the glass transition, correlations increase as shear rate decreases: the expon…
Grain orientation, BaTiO3 heterogeneous template content, and electrode materials are expected to play an important role in controlling the polarization fatigue behavior of ⟨001⟩ textured Pb(Mg1/3Nb2/3)O3-PbTiO3 ceramics. A comparative analysis with randomly oriented ceramics showed that ⟨001⟩ grain orientation/textur…
The in situ elastic and plastic behaviors of sodium aluminosilicate glasses with different degrees of depolymerization were analyzed using Brillouin spectroscopy. The observed elastic anomaly progressively vanished with depolymerization. The densification process appears to be different from that observed in pure sili…
We study charge transport properties of amorphous phase-change materials (PCM) using a set of balance equations applied to a three-dimensional random network of sites. In the context of trap-limited conduction, model results are checked against experimental data on PCM devices near the limits of scaling (∼10 nm), expl…
Acetaminophen was synthesized by reacting p -aminophenol with acetic anhydride. Overall materials balance was compiled. Three different crystallization paths (i.e., cases I, II, and III) involving various modes in agitation and addition of sodium hydroxide were taken to produce acetaminophen particles with different p…
Electrospun nanofiber membranes offer many advantages and their application in drug delivery and regenerative medicine is significant. Solvent based electrospinning processes typically use hazardous organic solvents that not only pose a health hazard to manufacturers and users of electrospinning but could also be trap…
Nanometer-sized structures with rhombohedral symmetry were discovered in the tetragonal and orthorhombic phases of perovskite-type ferroelectric BaTiO3, using convergent-beam electron diffraction [K. Tsuda, R. Sano, and M. Tanaka, Phys. Rev. B 86, 214106 (2012)]. The existence of rhombohedral nanostructures indicates…
Banana fiber reinforced phenol formaldehyde composites with different fiber lengths and fiber loadings were prepared by compression molding (CM) and resin transfer molding (RTM) techniques. The mechanical properties such as tensile, flexural, and impact behavior were studied. RTM composites showed improved tensile and…
Graphene layers were synthesized by annealing amorphous carbon (a-C) thin films on Ni/SiO2/Si(111) substrates grown using pulse arc plasma deposition. Although the graphene layers were formed by catalytic reaction between a-C films and Ni metals, they were observed to be directly on the insulating SiO2/Si substrates w…
Dependence of a blue phase temperature range on a chiral dopant and cyano compound addition as well as character of nematic base mixture was investigated. Base nematic mixtures of fluorinated compounds, one with positive and the other one with negative dielectric anisotropy, were chosen. Various fluoro compounds, chir…
Hot-stage microscopy commonly used in materials science, coupled with image analysis software (ImageJ) is proposed for the first time as an alternative and simple approach for visualizing the metal foam evolution and the thermal events occurring onto the external surface skin, as well as to obtain the expansion curve…
The effect of growth-induced non-stoichiometry on the thermal and dielectric properties of pulsed-laser deposited LaAlO3 thin films is explored. The composition of the LaAlO3 films was characterized via X-ray photoelectron spectroscopy and Rutherford backscattering spectrometry and it is revealed that small deviations…
ABSTRACT Composites with excellent water‐induced shape‐memory effects (SMEs) were successfully synthesized by first using clay as the SME‐activating phase and thermoplastic polyurethane (TPU) as the matrix. Naturally abundant clay was grafted with poly(methacrylic acid) (PMAA) to improve particle interactions, which a…