Materials Literature
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The dynamic crystallization and melting behavior of isotactic polypropylene-tungsten disulfide (iPP/IF-WS(2)) nanocomposites incorporating a β-nucleating agent is investigated by X-ray diffraction and differential scanning calorimetry. A conventional melt-processing strategy is employed to generate new materials that…
Polarization dependence of the exciton-plasmon-photon conversion in silver nanowire-quantum dots structure was investigated using a scanning confocal microscope system. We found that the fluorescence enhancement of the CdSe nanocrystals was correlated with the angle between the excitation light polarization and the si…
In this paper, a one-degree-of-freedom actuator that is based on shape memory alloy (SMA) springs is developed and tested. The use of SMA springs allows a larger actuation workspace and controllable stiffness than SMA wires. It is shown that the actuator demonstrates a good positioning accuracy in addition to a higher…
Liquid marbles are droplets coated with hydrophobic micro-scaled powder. Micro-scaled particles of polyvinylidene fluoride formed highly permeable shell enwrapping 100 microliter droplet. This fact was used for converting liquid marbles into micro-reactors. Marbles containing the mixture of ammonia acetate, acetic aci…
Abstract This article studies the relationship between the distribution of organically modified montmorillonite (OMMT) and the flammability of flame retardant polypropylene which consists of polypropylene (PP), brominated epoxy resin‐antimony oxide (BER‐AO) and OMMT. Polypropylene‐ graft ‐maleic anhydride (PP‐ g ‐MAH)…
We investigate the interplay between the governing magnetic energy terms in patterned La0.7Sr0.3MnO3 (LSMO) elements by direct high-resolution x-ray magnetic microscopy as a function of temperature and geometrical parameters. We show that the magnetic configurations evolve from multidomain to flux-closure states (favo…
Multiferroic double-perovskite BiFe0.5Mn0.5O3 thin film heterostructures were epitaxially grown on CaRuO3-buffered (001) SrTiO3 by pulse laser deposition. Typical Vogel-Fulcher relaxorlike dielectric and magnetic susceptibilities were observed, implying the film exhibits the properties of an electric relaxor and a mag…
The composite of carboxymethyl-modified β-cyclodextrin-intercalated ZnAl-layered double hydroxide (CMCD-LDH) was investigated for selective adsorption of phenol (Ph) and nitrobenzene (NB). The Freundlich model can be used to describe satisfactorily the adsorption isotherms of Ph and NB. The adsorption capacity of CMCD…
Abstract The stress softening effect of nature rubber (NR) reinforced by in situ prepared zinc dimethacrylate (ZDMA) was studied. Degree of stress softening effect (Ds) in the 4th stress–strain cycle of the NR with 10 phr (parts per hundreds of rubber) ZDMA was only 2.23 (strain = 100%), whereas it reached to 59.98 at…
Drug-loaded polymeric nanocapsules have exhibited potential applications in the field of drug delivery systems in recent years. This article entails the biodegradable polymers generally used for preparing nanocapsules, which include both natural polymers and synthetic polymers. Furthermore, the article presents a gene…
Abstract To investigate the morphology, crystallization properties of reversible phase and thermal sensitive shape memory properties of CW/SMPU (Cellulose Whisker/Shape Memory Polyurethane) nano‐composite, the CW/SMPU nano‐composite having CW contents of 0.1–3.8 wt % were prepared. SEM investigation showed the evoluti…
The thermoelectric properties of double-perovskite oxide Sr2−xLaxCoTiO6−δ were revealed to vary anomalously with the La concentration, plausibly due to a structural transition found in this study. Although the temperature dependence of the resistivity and thermopower of the present oxide showed a semiconductor-to-meta…
Abstract Miscibility and crystallization of biodegradable poly (3‐hydroxybutyrate‐ co ‐3‐hydroxyhexanoate) (PHBHHx)/poly(vinyl phenol) (PVPh) blends were investigated in this work. PHBHHx is miscible with PVPh over the whole composition range as evidenced by the single composition dependent glass transition temperatur…
Strong interfacial interaction is extremely important for achieving efficient mechanical reinforcement in polymer/inorganic nanoparticle composites. In this study, it was demonstrated for the first time that largely improved interfacial interaction could be obtained in continuously melt-spun fibers of poly(vinylidene…
The structural and electronic properties of the BiFeO3(BFO)/SrTiO3(STO) heterostructure are studied using supercell approach by ab-initio density functional theory calculations. Our calculations indicate that a two-dimensional electron gas (2DEG) exists at the n-type (BiO)+ and (TiO2)0 interface, due to the fact that…
The short-term (less than 1 hour) exposure of TiO2/PbS quantum dot photovoltaics to air increases the open circuit voltage (Voc) and fill factor (FF) while slightly decreasing the short circuit current density (Jsc), leading to a power conversion efficiency above 4% and a peak external quantum efficiency over 80% for…
This contribution discusses the developed approaches as well as the limitations of scanning electron microscopy (SEM) and atomic force microscopy (AFM) to measure topographic details of structures on lithographic masks and wafers aiming at uncertainties in the nanometre range or even below. In the first approximation,…
The optical properties of zigzag and armchair boron nitride nanoribbons (BNNRs) are investigated via a GW-Bethe-Salpeter equation approach. The reduced dimensionality and large band gaps of the BNNRs significantly enhance the exciton binding energies up to several eV. Many-body effects dramatically reshape the absorpt…
We propose a new type of reference material as a magnification standard of a transmission electron microscope (TEM) and a scanning transmission electron microscope. The reference material represents a thin cross-section of a silicon relief structure with certified sizes of its elements. It is fabricated using ion mill…
A novel type of deep ultraviolet scatterometer recently developed and set up at PTB has been significantly improved with respect to the dynamic range and the signal-to-noise ratio of the measured scatterograms. The main modifications concern a novel digital data acquisition technique and a new method for the calibrati…