Materials Literature
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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 temperature…
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…
Graphene quantum dots (QDs) hold great promises in spintronics. Here, we report our predictions of honeycomb-patterned QDs beyond graphene, on the basis of first-principles calculations and an extended Hubbard model. Our calculations showed that the electronic structures and spin-polarization of boron nitride (BN) and…
This article reports a novel method to assemble a small anion with exfoliated Mg-Al-layered double hydroxide (LDH) nanosheets into ordered ultrathin films (UTFs) by employing the layer-by-layer assembly technique. The premixing solution of tris(8-hydroxyquinolate-5-sulfonate)aluminum(III) (AQS(3-)) with three kinds of…
ZnO-based heterostructured light-emitting diode was fabricated by hydrothermally growing ZnO nanorods on p-type GaN substrate. Blue-violet electroluminescence was observed from the ZnO/GaN diode. The color-tunable CdTe quantum dots (QDs) samples with photoluminescence emission peaks ranging from 550 nm to 660 nm were…
In the charging model, the fluorescence intermittency observed in semiconductor nanocrystals is explained in terms of an Auger-mediated quenching of the photoluminescence in the presence of a single additional charge delocalized in the dot core. The validity of this description has however been challenged by recent ex…
Can radiation damage to protein crystals be `outrun' by collecting a structural data set before damage is manifested? Recent experiments using ultra-intense pulses from a free-electron laser show that the answer is yes. Here, evidence is presented that significant reductions in global damage at temperatures above 200…
This study describes a method for the composition analysis of the carbon black-filled polychloroprene rubber (CR) compound. Good agreement of the experimental data with the actual value was found. The method is based on three experiments namely thermogravimetric analysis, solvent extraction, and newly developed thermo…
Class IV polyhydroxyalkanoate (PHA) synthase from Bacillus cereus YB-4 (PhaRC(YB4)) or B. megaterium NBRC15308(T) (PhaRC(Bm)) was expressed in Ralstonia eutropha PHB(-)4 to compare the ability to produce PHA and the substrate specificity of PhaRCs. PhaRC(YB4) produced significant amounts of PHA and had broader substra…