Materials Literature
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There is growing evidence that filamentous nanoparticles offer advantages over spherical ones in drug delivery applications. The purpose of this study was to assess the potential of rod-like, plant-derived cellulose nanocrystals (CNCs) for nanomedical uses. Besides a nonspherical morphology, their facile bioconjugatio…
Angle resolved photoemission spectroscopy (ARPES) reveals the features of the electronic structure of quasi-two-dimensional crystals which are crucial for spin and charge ordering and determine the mechanisms of electron–electron interactions, including superconducting pairing. The newly discovered iron-based supercon…
The Seebeck coefficient of p-type PbTe can be enhanced at 300 K, either due to the addition of Tl-resonant states or by manipulation of the multiple valence bands by alloying with isovalent compounds, such as MgTe. PbTe alloyed with MnTe shows a similar thermopower enhancement that could be due to either mechanism. He…
Many different nanostructures have been developed for biomedical applications to date. Among them, iron oxide nanoparticles have been very prominent in MRI in diagnostic radiology. Nowadays, nanoparticle-based therapeutic applications have gained increased interest, leading to the development of a great variety of dif…
We have demonstrated amplification of luminescence in upconversion nanophosphors (UCNPs) of hexagonal phase NaYF(4) (β-NaYF(4)) doped with the lanthanide dopants Yb(3+), Er(3+) or Yb(3+), Tm(3+) by close proximity to metal nanoparticles (NPs). We present a configuration in which close-packed monolayers of UCNPs are se…
Multiferroic materials and devices have attracted intensified recent interests due to the demonstrated strong magnetoelectric (ME) coupling in new multiferroic materials and devices with unique functionalities and superior performance characteristics. Strong ME coupling has been demonstrated in a variety of multiferro…
Nanoparticles (NPs) are materials with overall dimensions in the nanoscale range. They have unique physicochemical properties, and have emerged as important players in current research in modern medicine. In the last few decades, several types of NPs and microparticles have been synthesized and proposed for use as con…
Graphene sheets that are now routinely obtained by the exfoliation/reduction of graphite oxide exhibit Raman spectra unlike traditional graphene systems. The general attributes of the Raman spectra of these ‘wrinkled graphene’ are first reaffirmed by evaluating the spectra of samples prepared by seven different exfoli…
Rod-like hydroxyapatites (HAs) were successfully fabricated with , , and polyvinylpyrrolidone (PVP) as a stabilizer. FT-IR was used to identify rod-like HA and to observe the functional groups on the surface of HA. We conducted the turbiscan test to confirm the effects of the HA ratio on the dispersion stability in th…
The properties of methane oxidation were studied in this research over transition metal containing <TEX>$CeO_2$</TEX> (TM/<TEX>$CeO_2$</TEX>, TM=Ni, Co, Cu, Fe) with TM content of 5 wt. % at atmospheric pressure. The characteristics of catalysts were investigated by various characterization techniques, including XRD,…
Abstract In this article, a series of biodegradable cross‐linkers, [poly( d , l ‐lactide‐ co ‐glycolide)‐ b ‐poly(ethylene glycol)‐ b ‐poly( d , l ‐ lactide‐ co ‐glycolide), (PLGA‐PEG‐PLGA), diacrylate] (LGE dA) with different molar ratios of d , l ‐lactide (LA)/glycolide (GA) in PLGA, were prepared from the correspon…
In plasticized poly(vinylchloride) (PVC) films, representing system of two chemically non-interacting insulators, PVC and plasticizer, at monotonous increase of concentration of one of the insulators (plasticizer) sharp transition insulator-semiconductor to a high conductive state is found out, which is accompanied by…
In this Letter, the effects of nano ZnO addition as a sintering aid on a microstructure, and dielectric and ferroelectric properties of a Pb (Zn1/3Nb2/3) O3–PbTiO3–BaTiO3 (PZN–PT–BT) relaxor ferroelectric ceramics around the morphotropic phase boundary were investigated. As-prepared (unannealed) and annealed ceramics…
Abstract Five kinds of poly(phenylene vinylene) (PPV) derivatives with different alkoxyl substituents were synthesized with optimized synthesis procedures. The optimized PPV derivatives are reacted at 80°C for 6 h after mixing of the reactants at 45°C, and then followed by aging at 95°C for 1 h. The optimized molar ra…
An analytical approximate solution of the electromagnetic field on a subwavelength elliptical hole in a thin perfectly conducting screen is presented. Illumination is a linear polarized, normally incident plane wave. A polynomial development method is used and allows one to obtain an easy-to-use analytical solution of…
The authors present experimental results of electron beam driven structuring of GexSe1-x glass films with composition (x ∼ 0.2) that lies very close to the floppy to rigid stiffness transition for the purpose of achieving planar ridge optical waveguides. Chalcogenide thin films were deposited by pulsed laser depositio…
Silver nanoparticles for metal-enhanced fluorescence (MEF) have been successfully synthesised by pulsed electrodeposition of silver in the anodic aluminium oxide (AAO) templates. X-ray diffraction and scanning electron microscopy indicate that the as-synthesised samples were composed of face-centred cubic Ag nanoparti…
The aqueous, methanol and ethanol extracts of <i>Calotropis gigantea</i> leaves, apical buds and flowers were prepared and used to study the effect of <i>Calotropis gigantea</i> extracts on growth & survival dynamics of <i>Escherichia coli, Staphylococcus aureus, Candida albicans</i>and<i>Xanthomonascampestris</i>. Mi…
A ternary nanostructure, composed of graphite oxide (GO), MnO2 and poly[(2,5-di-phenyl-1,3,4-oxadiazole)-4-diylvinylene-alt-3,6-(N-butyl-carbazolenevinylene)] (POXA-CAR), is fabricated via a simple two-step method. The as-prepared composite is characterised by X-ray diffraction, X-ray photoelectron spectroscopy, field…
Prior examinations have reported that polymer stabilisation of azobenzene-based cholesteric liquid crystal (CLC) mixtures can reduce the time necessary for complete colour restoration in the dark from three days to as few as five minutes. This work extends upon these prior examinations by exploring and elucidating the…