Materials Literature
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The adsorption orientational behavior of dicationic porphyrins on clay surfaces in various solvents was examined. Addition of aprotic solvents to the aqueous solution containing the clay–porphyrin complex induced a large spectral shift to shorter wavelength. The blue shift turned out to be due to the orientation angle…
An attempt was made on, chitosan synthesized into nano particles and characterized through Transmission Electron microscope (TEM ) and Dynamic light scattering (DLS). The indiv idual size varied fro m 5 n m to 180 n m respectively in TEM and DLS. Nano ch itosan particles were applied on 100% cotton, viscose and polyes…
Bonding in the crystalline phase of GeTe-based phase-change alloys is believed to be purely $p$ type. In this work we demonstrate that in the absence of long-range order, despite the preserved bonding angles of $\ensuremath{\sim}{90}^{\ensuremath{\circ}}$, $s{p}^{3}$ hybridization is more favorable with a pair of nonb…
Due to their efficient conversion of absorbed light energy to heat gold nanorods have been proved to be an amazing tool for minimally invasive photo-thermal cancer therapy. The present in vitro study demonstrates the ability of silica coated Au nanorods to function as a dual probe for cancer-cell therapy and imaging w…
Abstract The growth and properties of two‐dimensional (2D) materials–graphene as well as related monolayer systems, such as hexagonal boron nitride–on metals are topics of high scientific and technological interest. Real‐time low‐energy electron microscopy (LEEM) can provide unique insight into the fundamental growth…
Slow crystallization and fast precipitation of a tetrazole-substituted diphenylacetylene derivative ( MPT ) led to formation of solids with significantly different photoluminescence efficiencies of 0.06 and 0.33, respectively. A detailed study of the photophysical properties of solutions of MPT as a function of concen…
The heat capacity of supercooled water, measured down to -37°C, shows an anomalous increase as temperature decreases. The thermal diffusivity, i.e., the ratio of the thermal conductivity and the heat capacity per unit volume, shows a decrease. These anomalies may be associated with a hypothesized liquid-liquid critica…
Abstract The theoretical design and the first experimental verification of an exterior dc invisibility cloak that can hide an object from dc detection at a distance are presented. Based on the transformation optics theory, the exterior dc cloak requires negative conductivity material to create folded geometry, which w…
ABSTRACT The crack tip stress‐induced martensitic transformation and the resulting stress distribution in a nickel–titanium (NiTi)‐based shape memory alloy have been analysed. In particular, the effects of temperature, within the stress‐induced transformation regime, in single edge crack specimens have been studied by…
A chemical defect healing of reduced graphene oxide (RGO) was carried out via intramolecular cross-dehydrogenative coupling (ICDC) with FeCl3 at room temperature. The Raman intensity ratio of the G-band to the D-band, the IG/ID ratio, of the RGO was increased from 0.77 to 1.64 after the ICDC reaction. From XPS measure…
This paper presents fundamental solutions for an infinite space of one-dimensional hexagonal quasi-crystal medium, which contains a penny-shaped or half-infinite plane crack subjected to two identical thermal loadings on the upper and lower crack lips. In view of the symmetry of the problem with respect to the crack p…
A selective method for growing high-quality spinel-type epitaxial Fe 3 O 4 (0 0 1) or γ -Fe 2 O 3 (0 0 1) films was developed using conventional planar-type sputtering by controlling the flow rate of oxygen gas . Although magnetization of the oxide films is close to that of Fe 3 O 4 or γ -Fe 2 O 3 for all , the room-t…
Abstract High‐valent vanadium ions were substituted into the synthetic cryptomelane manganese oxide (K‐OMS‐2) framework through a simple and low‐cost reflux method and investigated for total and preferential catalytic oxidation of carbon monoxide. Substitutional doping of V 5+ resulted in materials with modified compo…
Micrometer-sized gold-silica Janus particles act as an effective stabilizer of emulsions by adsorption at the oil-water interface. The Janus particles were adsorbed at the oil-water interface as a monolayer and stabilized near-spherical and nonspherical oil droplets that remained stable without coalescence for longer…
Expandable graphite (EG) and dimethyl methylphosphonate (DMMP) were added to polyurethane to form flame‐retardant high‐resilience flexible polyurethane foam (FPUF) in one‐step. The effects of EG and DMMP on cell morphology, mechanical properties, dynamic mechanical properties, thermal degradation, and flame‐retardant…
Ca-doped BiFeO3 nanofibres have been fabricated by electrospinning method. Our results indicate that phase transition from space group R3c to C222 can be observed by the Ca doping. These BiFeO3 nanofibres show obvious room temperature ferromagnetic behaviors, and saturation magnetization can be enhanced with the Ca-do…
The behavior of prostate carcinoma (PC3) cells and human dermal fibroblast (HDF) cells when incubated with sedimented Au NPs in vitro is studied. Darkfield microscopy demonstrates that both PC3 and HDF cells can "vacuum" Au NPs from the surface. Mean square displacement and mean cumulative square distance of cells sho…
The purpose of the study is to investigate the effects of electrospun fiber diameter and orientation on differentiation and ECM organization of bone marrow stromal cells (BMSCs), in attempt to provide rationale for fabrication of a periosteum mimetic for bone defect repair. Cellular growth, differentiation, and ECM or…
Abstract Multifunctional theranostic systems with good biocompatibility, strong clinical imaging capability, and target specificity are the desired features of future medicine. Here, the design of a theranostic nanocomposite capable of simultaneous targeting and imaging of the cancer cells is presented. It releases it…
High-quality epitaxial Bi 1− x RE x FeO 3 (RE=La, Nd, Gd; x = 0, 0.05, 0.15) thin films were prepared on SrTiO 3 (1 0 0) substrates using pulsed laser deposition. X-ray diffraction and RBS-channelling spectroscopy showed that the films are single-phase perovskite, free of additional phases and textured with preferenti…