Materials Literature
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Hyperbranched poly(aryl ether ketone)s with hydroxyl end groups (HBP‐OH) and high degree of branching value (83%) were synthesized via an A 2 + B 3 approach. The polymerization conditions (e.g., polymerization temperature and time, monomer concentration, stoichiometric ratio of functional groups) were explored to avoi…
Recently, it has been showed that gadolinium oxide nanoparticles can provide high-contrast enhancement in magnetic resonance imaging (MRI). Moreover, liposomes due to high biocompatibility have shown unique model systems, with the most successful application being the drug delivery system. As a suitable cell-tracking…
Ag–Au bimetallic nanospheroids with tunable localized surface plasmon resonance (LSPR) were synthesized by 100 keV Ar–ion irradiation of 30 nm Ag–Au bimetallic films deposited on SiO2 glass substrates. A shift of the LSPR peaks toward shorter wavelengths was observed up to an irradiation fluence of 1.0 × 1017 cm−2, an…
Changes in electrical properties of a bilayer graphene-based field-effect transistor (G-FET) after being oxidized through ultraviolet (UV)/ozone (O3) treatment are presented. A decrease in conductivity and carrier mobility was observed after oxidation. However, electrical properties recovered after annealing oxidized…
BaTiO3, with both nitrogen and fluorine substituted for oxygen, has been prepared and the properties of the doped material with the composition BaTiO2:8N0:1F0:1 have been studied. The color of the sample changes to light green on doping, accompanying a broad visible absorption band with its edge at 2.5 eV. The first-o…
A kinetic model describing the conversion of a photochromic layer under complex illumination conditions is applied to absorbance-modulation optical lithography to determine the influence of the material characteristics on the confinement to subdiffraction dimensions of the transmitted dose. We show that the most impor…
Here we provide a simulation based on discrete dipole approximation method of the properties of surface plasmons on triangular gold nanoprisms and investigate their electric-field distribution to identify different multiple surface plasmon resonances. Near-field maps of triangle gold nanoprisms are established. Symmet…
Poly(3-hydroxyoctanoate)/poly(3-hydroxybutyrate), P(3HO)/P(3HB), blend films loaded with aspirin were prepared, and the influence of aspirin loading on the surface properties, mechanical, thermal and degradation properties were investigated. Scanning electron microscopy images revealed that the addition of aspirin int…
We study the self-assembly of cylinder-forming diblock copolymers confined in ultrathin films by means of dissipative particle dynamics simulations paired with an elaborate polymer model that mimics the experimental reference system (PS–PHMA) as faithfully as computationally feasible. In particular, the effects of the…
Multi-spectral imaging systems typically require the cumbersome integration of disparate filtering materials in order to work simultaneously in multiple spectral regions. We show for the first time how a single nano-patterned metal film can be used to filter multi-spectral content from the visible, near infrared and t…
Single crystal diamond has been used as a substrate to support single layer graphene grown by chemical vapor deposition methods. It is possible to chemically functionalise the diamond surface, and in the present case H-, F-, O-, and N-group have been purposefully added prior to graphene deposition. The electronic prop…
We demonstrate the drastic effect of film thickness on the local order of Ge sites in amorphous GeTe ultrathin films by Surface Enhanced Raman Scattering study. The relative intensity of the two prominent peaks around 125 cm−1 and 160 cm−1 changes greatly as a function of the film thickness from 100 nm to 3 nm. We sug…
We analyze the thermal rectification coefficient of a graded inhomogeneous porous Si device, as a function of the spatial porosity distribution, taking into account ballistic phonon-pore collisions when phonon mean-free path is much longer than the radius of the pores. We compare the results for the thermal rectifying…
Solidification of hydrogen and deuterium has been studied under dynamic compression using dynamic-diamond anvil cell, time-resolved Raman spectroscopy, and fast micro-photography. Liquid H2 or D2 solidifies into a grain boundary free crystal grown from the outer edge of the sample chamber in 1–30 ms depending on the c…
By measuring time-dependent optical birefringence with 4-femtosecond (fs) laser pulses, we determine the time scale for photoinduced melting of orbital order in the single-layer manganite La${}_{0.5}$Sr${}_{1.5}$MnO${}_{4}$. Such high time resolution is required to distinguish atomic motions that control the Jahn-Tell…
A library of tetrathiafulvalene (TTF) derivatives (TTF-1-TTF-47) bearing aryl groups attached through sulfur bridges has been created. The peripheral aryl groups exert a significant influence on both the electronic and crystallographic properties of the resulting TTFs. These TTFs display broad absorption bands at 400-…
To cut down the energy consumption and processing period, Ni‐YSZ anode‐supported thin YSZ electrolyte SOFCs have been fabricated by an improved dip‐coating technique, in which the electrolyte layer was dip‐coated on green anode substrates instead of prefired ones, followed by co‐firing. The film formation mechanisms o…
We investigated the critical current density (Jc) of Ba0.5K0.5Fe2As2 single-crystalline microbridges with thicknesses ranging from 276 to 18 nm. The Jc of the microbridge with thickness down to 91 nm is 10.8 MA/cm2 at 35 K, and reaches 944.4 MA/cm2 by extrapolating Jc(T) to T = 0 K using a two-gap s-wave Ginzburg-Land…
Surface modification of silk fibroin (SF) materials using environmentally friendly and non-hazardous process to tailor them for specific application as biomaterials has drawn a great deal of interest in the field of biomedical research. To further explore this area of research, in this report, polypropylene (PP) graft…
Minute amounts of Fe/Mn are selected to be doped into CeyCo4Sb12 filled skutterudites to slightly compensate for electrons donated by the fillers. As a direct result, the Ce filling fractions are enhanced from 0.11 to 0.16. The carrier concentrations are improved by a factor of more than two times to approach the opti…