Materials Literature
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Here we present atomic scale studies into the nature of both the internal structure and external surfaces of catalytic Au nanoparticles using aberration corrected in-situ electron microscopy. The activity of catalytic nanoparticles is thought to be highly sensitive to the particles' structure, meaning typical local at…
Dilute (III, Mn)V ferromagnetic magnetic semiconductors have potential applications in spintronic devices as magnetic field sensors, spin transistors and reconfigurable logic devices. For such applications ferromagnetism at room temperature is a practical requirement. Previous work has shown that In 1−x Mn x Sb films…
The influence of angular effects on the upper critical field is studied by using generalized two-band Ginzburg–Landau (GL) theory. It is shown that such a model is in better agreement with known experimental data for the new superconductor LiFeAs. The deviation from single-band GL theory is maximum at temperatures clo…
STM imaging and cathodoluminescence spectroscopy are used to explore the morphology and optical properties of Eu2O3 nano-islands grown on MgO(001) thin films. The global emission properties are governed by intense photon peaks at around 600 nm, arising from forced-dipole transitions in the 4f-state manifold of Eu3+ io…
Availability of soil copper (Cu) to plants is dependent on the release into the soil solution of Cu from the solid phases. To ascertain the pattern of Cu release and the soil characteristics affecting it, the kinetics of Cu release by diethylenetriaminepentaacetic acid (DTPA) from 14 calcareous soils of northern Iran…
High resolution scanning transmission electron microscope (HRSTEM) and electron energy loss spectroscopy spectrum imaging (EELS SI) methods have been successfully applied to the analysis of planar antiphase boundaries in (Bi 0.85 Nd 0.15 )(Fe 0.9 Ti 0.1 )O 3 (BNFT) ceramics. Two distinct structures for these boundarie…
Ingenieurswese
Abstract The use of glancing angle deposition technique provides opportunities for the deposition of sculptured nanostructures of different shape. The optical properties of such nanostructures that are a function of the shape of these nanostructures may be investigated, using the discrete dipole approximation theory w…
Silica nanorattle with hollow and mesoporous structure has been proven to be an excellent drug carrier. However, how to control the drug release from silica nanorattle is still a challenge. In this study, we designed two methods, in-situ polymerization method and water in oil in water (W/O/W) double emulsion method, t…
A comparative photoluminescence analysis of as-prepared and chemically modified (by alkyl chains -C18H37) silicon and carbon nanoparticles dispersed in low-polar liquids is reported. Influence of the low-polar liquid nature and ambient temperature on photoluminescence of the nanoparticles has been investigated from th…
Graphite is employed as a moderator and structural component in 18 of the UK's fleet of Magnox and Advanced Gas-cooled Reactors (AGRs). During the operational lifetime of a reactor, graphite undergoes complex physical and mechanical property changes including dimensional modification, owing to the effects of temperatu…
ZnO nanoparticles are used in a variety of commercial products including sunscreens. The potential for accumulation in the aquatic environment has driven investigation into the toxicity of nanoparticulate ZnO. Thorough characterisation of the physicochemical properties of nanoparticulates is required in order to gain…
Abstract The foaming of PVC‐VA [Poly (vinyl chloride‐co‐vinyl acetate)] plastisols is a complex combination of processes involving the simultaneous curing of the paste with the evolution of gases caused by the decomposition of the chemical blowing agent. The extensional viscosity is a fundamental characteristic of the…
With the growing progress in tissue engineering, the search for new scaffolding materials has recently intensified considerably. Focusing on this, we synthesized hydrophilic–hydrophobic terpolymers containing poly(ethylene glycol) (PEG) and two different polyester units: butylene terephthalate and butylene linoleate.…
Polyvinyl chloride (PVC) is one of the most frequently used polymers for the manufacturing of medical devices. Limitations for its usage are based upon unfavorable surface properties of the polymer including its hydrophobicity and lack of functionalities in order to increase its versatility. To address this issue, wet…
This work deals with the butterfly conformation control of the anti-HIV TIBO molecule confined into carbon nanotubes (CNT). This theoretical study concerns the variation of some pertinent conformation descriptors such as butterfly angle, wingspan, volume, dipole moment, solvation energy and confinement energy versus c…
We report an anchoring transition of a liquid crystal under the influence of an electric field (E field) in the vicinity of a first-order anchoring transition (ATr) temperature showing bistable homeotropic (H) and planar (P) states. By means of polarizing microscopy combined with retardation and switching and dielectr…
Multiphase core-shell nanowires have been fabricated by controlling the ion transport processes of the microfluids in the nanochannels of the template. Both forced convection and pulsed potential induced migration can be applied to tune the morphologies of the nanostructures obtained by manipulating the ion transport…
Als Cluster von Wassermolekülen, die auf einem Gerüst präsentiert werden – ein „präorganisiertes Wasseroligomer“ –, lässt sich Sialyl-Lewisx (sLex) beschreiben. Den Antrieb für die Bindung von sLex an E-Selectin liefern der hohe Grad an Präorganisation, der ein Netzwerk von gerichteten Wasserstoffbrücken ermöglicht, u…
An electron beam inducing method for sprouting large quantities of silver nanoparticles on the surface of silver chloride particles is reported. The electron beam driven process was characterized by time-dependent scanning electron microscope (SEM) and energy dispersive spectrum (EDS), allowing for observing several k…