Materials Literature
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In this study, transverse nonlinear vibration and instability analysis of a viscous-fluid-conveyed single-layered graphene sheet (SLGS) subjected to thermal gradient are investigated. The small-size effects on bulk viscosity and slip boundary conditions of nanoflow through Knudsen number ( Kn), as a small size paramet…
Abstract This study addresses the optical and electrical properties of ZnO thin films doped with Al, V and Nb (ZnO:Al, ZnO:V and ZnO:Nb, respectively) deposited by r.f. magnetron sputtering in Ar atmosphere. The films are deposited on glass substrates without heating and heated at 100 °C, 150 °C and 275 °C. The optica…
Abstract A homogeneously aligned liquid crystal layer on a substrate film on which it is not necessary to form a liquid crystal alignment film can be assembled by a slit coater. Types of twisted nematic and in‐plane switching flexible liquid crystal displays were demonstrated. The production time can be considerably s…
The self-aggregation and gelation of an amphiphilic peptide (C 17 H 35 CONH–A 4 G 3 ERGD, peptide amphiphile) were studied by light scattering, viscometry, nuclear magnetic resonance diffusometry, and atomic force microscopy. The peptide amphiphile critical aggregation concentration was evaluated to be 16 and 60 µM by…
Abstract Coal tar pitch was treated at 773 K in a constructed furnace system used under a magnetic flux density (B) of up to 10 T. The (002) X-ray diffraction peak intensity of the treated pitches increased with increasing B to approach a saturation value over 6 T. The magnetic-field dependence of the intensity was fi…
BACKGROUND: A new method is developed to quantify molar equivalents of N-hydroxysuccinimide (NHS) esters of derivatives of monomethoxyl poly-(ethylene glycol) (mPEG) in their preparations with NHS acetate ester as the reference. RESULTS: NHS ester of succinic monoester or carbonate of mPEG of 5,000 Da was synthesized…
Two liquid crystalline compounds with different shapes and chirality aspects have been used to prepare binary mixtures. An achiral hockey stick mesogen exhibiting a nematic–smectic C synclinic–smectic C anticlinic phase sequence has been blended with a chiral rod-like mesogen with a SmA*–ferroelectric (FE) SmC*–antife…
Microwave refluxing was found to be a suitable method to produce single phase magnetic nanoparticles of Ni x Fe 3− x O 4 . Ethylene glycol employed in the synthesis plays a crucial role in restricting the particle size to nano dimensions. X-ray diffraction studies, Mössbauer spectroscopy and magnetic measurements sugg…
A novel low-molecular weight gelator based on a mixture of a cationic pseudopeptidic surfactant and lauric acid (1/3), at basic pH, is reported. The gelling properties of this system have been investigated by Infra-Red spectroscopy (FT-IR), Scanning and Transmission Electron Microscopies (SEM, TEM), and Small Angle X-…
Abstract We detected singlet molecular oxygen (1O2) with a near-infrared phosphorescence peak at 1270 nm in photocatalysis of gold-nanoparticle-deposited titanium dioxide (AuNP/TiO2) by the excitation of surface plasmon resonance. The formation of 1O2 indicates a possible application of AuNP/TiO2 for photodynamic ther…
Single-walled carbon nanotube (SWCNT) random networks are easily fabricated on a wafer scale, which provides an attractive path to large-scale SWCNT-based thin-film transistor (TFT) manufacturing. However, the mixture of semiconducting SWCNTs and metallic SWCNTs (m-SWCNTs) in the networks significantly limits the TFT…
To maximize syngas yield by the catalytic partial oxidation of methane, fibrous NiO/CeO2 nanocatalysts were synthesized by a one-step template process for the catalytic reaction at microsecond contact times. High conversion performances at high gas hourly space velocities (∼107 h−1) indicate potential applications in…
Abstract Shape memory polymers (SMPs) are an emerging class of active polymers that may be used for a range of reconfigurable structures. In this study, the thermomechanical and shape memory behavior of a thermosetting SMP was investigated using large‐scale compressive tests and small‐scale indentation tests. Results…
The theory of substitution sequences and their higher-dimensional analogues is intimately connected with symbolic dynamics. By systematically studying the factors (in the sense of dynamical systems theory) of a substitution dynamical system, one can reach a better understanding of spectral and topological properties.…
Abstract Poly(vinylidene fluoride) (PVDF)/silica nanocomposite membranes containing up to 30% silica were prepared by electrospinning using colloidal silica as the source of silica and dimethyl formamide as the solvent. The fiber morphology was observed by field emission scanning electron microscopy. The average fiber…
Abstract The variation of resistivity for high‐density polyethylene (HDPE) conductive composites filled with carbon black (CB) with time was investigated under the excitation of different temperature field. The movement of CB particles in the HDPE matrix was not a momentary equilibrium process, but a relaxation proces…
Infrared-assisted evaporative lithography (IRAEL) is presented as an emerging technology to direct the assembly of gold nanospheres (AuNSs) into large-scale superstructures within colloidal polymeric coatings. The organization of gold nanoparticle arrays within the superstructures can be tuned over length scales, rang…
Abstract The flame retardancy behavior of PP/PET blends containing organoclay and a halogen‐free flame retardant is explored. The morphological analysis reveals that the clays are mainly localized in PET bulk phase. The rheological analysis shows that the clay network structure is maintained in both PP‐rich and PET‐ri…
Earlier studies have shown that the helical content of α-helical peptide decreases upon its interaction with carbon nanotube (CNT). Further, the length of the α-helix varies from few residues in the small globular protein to several number of residues in structural and membrane proteins. In structural and membrane pro…
Cu doped ZnO polycrystalline pellets were synthesized with Cu concentrations varying from 2 to 10 wt% by a solid state reaction route (mixing of ZnO and CuO powders). Global magnetization measurements showed that all the samples were paramagnetic. Fitting the temperature-dependence of the magnetization to the Curie-We…