Materials Literature
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Highly-emissive patterns on porphyrin-doped polymeric samples are obtained by a novel, single-step, fully-optical method, by simply scanning light over the film surface. This light-scribing process is based on the depletion of luminescence quenching, achieved through a light-promoted reduction of O2 concentration.
Abstract Self‐emulsifying binders have been prepared by reaction of long oil alkyd resins with maleated derivatives of fatty acids. These binders were dispersed in water without use of external surfactants and free from volatile organic compounds. The binders were evaluated based on their performance properties, inclu…
We show that resonant scattering signals at the Bragg forbidden positions in ${\text{YVO}}_{3}$ originate from the anisotropic nature of the atomic scattering factor. The E1-E1 scattering from the electric-quadrupole moment is explained entirely through the crystal structure and does not require sensitivity to $3d$ or…
Abstract Well‐defined ABA type block copolymers of acetophenone formaldehyde resin (AFR) and methyl methacrylate (MMA) were synthesized via atom transfer radical polymerization. In the first step, acetophenone formaldehyde resin containing hydroxyl groups was modified with 2‐bromopropionyl bromide. Resulting difunctio…
We explore the duality between metric and material properties in the Maxwell’s equations to design metamaterial blueprints for cladding control of waveguide modes. We illustrate designs for circular and rectangular waveguides. In contrast to standard material loading of waveguides, the proposed cladding does not produ…
We present an electron spin resonance (ESR) study at excitation frequencies of 9.4 and 222.4 GHz of powders and single crystals of a Prussian blue analog (PBA), $\text{RbMn}[\text{Fe}{(\text{CN})}_{6}]\ensuremath{\cdot}{\text{H}}_{2}\text{O}$ in which Fe and Mn undergoes a charge-transfer transition between 175 and 30…
Abstract Differential scanning calorimetry, one‐ and two‐dimensional Fourier transform infrared (FTIR), and solid state nuclear magnetic resonance (NMR) spectroscopy have been used to investigate the miscibility of and specific interactions between poly(styrene‐co‐vinyl phenol) (PSOH) and poly(3‐hydroxybutyrate) (PHB)…
This paper reports efforts to develop paraffin actuators that rely on a phase change to achieve actuation. While paraffin phase-change actuators have existed for some time, this work relies on heating the paraffin in situ , rather than using external heaters. Graphite is used to create an in situ heater that utilizes…
Abstract The effect of experimental factors [pH and Hg(II)] on the fluorescence excitation emission matrices (EEMs) of nanosensor carbon dots (CDs) was analyzed by multiway decomposition methods based on parallel factor (PARAFAC) analysis. PARAFAC analysis of the EEM structures identifies three components correspondin…
The article reviews recent progress in the theoretical understanding of near-field surface electromagnetic phenomena in pristine and atomically doped carbon nanotubes.The phenomena involving strong coupling effects are outlined.They are the optical absorption by single-walled carbon nanotubes doped with single atoms o…
Abstract Various inorganic salts can be encapsulated inside the comparatively narrow (0.8–2 nm) hollow core of single‐walled carbon nanotubes (SWNTs) by molten phase capillary wetting. A new synthetic strategy is presented allowing the formation of one dimensional (1D) inorganic crystals or core–shell nanotubular stru…
This work generalizes Evans' homogeneous nonequilibrium method for estimating heat transport coefficient to multispecies molecular systems described by general multibody potentials. The proposed method, in addition to being compatible with periodic boundary conditions, is shown to satisfy all the requirements of Evans…
Carbon nanotube field-effect transistor (CNFET) is one of the most promising candidates for a building block of post silicon era integrated circuits. One of the major challenges faced by the CNFET is the presence of unwanted metallic tubes that adversely impacts the delay, power, and functional yield of carbon nanotub…
Abstract In this article, a facile strategy was developed to prepare BA‐MMA‐GMA/MWNTs (multiwalled carbon nanotubes) hybrid nanoparticles as nanofillers in rubber by single‐step grafting technique. First, a new macromolecular surface modifier butyl acrylate (BA)‐α‐methyl methacrylate(MMA)‐glycidyl methacrylate (GMA) t…
The electrical properties of a series of composites formed by reactive sintering have been investigated. Six composite samples with the same composition 43 mol % La 0.6 Sr 0.4 CoO 3±δ ·57 mol % CeO 2 (LSCC57) were fabricated through mixing of the initial LSC and CeO 2 followed by milling of the mixture for different p…
Abstract Surface modification of montomorillonite for improvement in d‐spacing was done by column chromatography with quaternary long chain ammonium salt having cation exchange capacity of 110 meq/100 g. Organically modified montomorillonite (OMMT)/poly(vinyl chloride) (PVC) nanocomposites were prepared through direct…
Abstract Polypropylene/clay nanocomposites (PPCNs) were prepared via an in situ polymerization method with a Ziegler–Natta/clay compound catalyst in which the MgCl2/TiCl4 catalyst was embedded in the clay galleries. The wide‐angle X‐ray diffraction and transmission electron microscopy results showed that the clay part…
Mit einer einfachen Prozedur gelingt der kovalente schichtweise Aufbau (Layer-by-Layer, LbL) von homodifunktionellem H2N-Poly(dimethoxysilan)-NH2 auf SiO2-Oberflächen. Man erhält robuste LbL-Filme von optischer Qualität (siehe Bild, Photo links) trotz Verwendung nicht gereinigter kommerzieller Ausgangsmaterialien. Die…
A new modular [Fe(II)(Fe(III)L(2))(3)](PF(6))(2) species with discoid (disk-like) topology exhibits redox and surfactant properties and points to a new approach for multimetallic Langmuir film precursors.
A polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP) micellar structure with a P2VP core containing 5 nm CdS nanoparticles (NPs) and a PS shell formed in toluene that is a good solvent for PS block undergoes the core-shell inversion by excess addition of methanol that is a good solvent for P2VP block. It leads to the…