Materials Literature
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The novel hydrophobic luminescent copolymer P(Ir-TFEMA) was developed as an online dissolved-oxygen (DO) sensor. The phosphorescent moiety of cyclometalated iridium(III) complex exhibits red emission near 650 nm with a large Stokes shift of about 245 nm and minimal optical interference from the fermentation system. Th…
The aim of this work was the fundamental research on multifunctional properties of poly(p‐phenylene sulfide) composites using commercially available multiwall carbon nanotubes (MWNT) in combination with micro‐scale short carbon fibers (SCF) and graphite as fillers. Systematic combinations of the three fillers were inv…
A 2-D polymeric Ca(II) compound, [Ca(tza)2(H2O)2] n , was synthesized by the reaction of tetrazole-1-acetic acid with calcium carbonate. The product was characterized by X-ray single-crystal diffraction, elemental analysis, and IR spectroscopy. The calcium center is six-coordinate in a slightly distorted octahedral co…
We describe the synthesis and photophysical properties of a series of derivatives of pyrrolo[3,2-b]pyrrole-2,5(1H,4H)-dione-3,6-diyl (iDPP) linked to two oligothiophenes of variable length (nT). The iso-DPP-oligothiophenes (iDPPnTs) differ from the common pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione-3,6-diyl-oligothiophene…
Molecular origin of the well-known specific heat anomaly in supercooled liquid water is investigated here by using extensive computer simulations and theoretical analyses. A rather sharp increase in the values of isobaric specific heat with lowering temperature and the weak temperature dependence of isochoric specific…
Two polypropylene resins with approximate weight‐average and z‐average molecular weight but differing in low molecular weight tail content were used for the fabrication of microporous membrane based on melt‐stretching mechanism. The precursor film with row‐nucleated crystalline structure, annealed film and cold‐stretc…
A high performance Nd2Fe14B/Ta thin film Permanent Magnet (PM) not only has a high remnant flux density and a high coercive force similar to those of a conventional sintered Nd2Fe14B magnet, but also has a high heat tolerance. Using a thin film PM, we developed a moving-magnet typeMEMS linearmotor consisting of a sili…
We simulate crystallisation of hard spheres with short-ranged attractive potentials as a model self-assembling system. Using measurements of correlation and response functions, we develop a method whereby the interaction parameters between the particles are automatically tuned during the assembly process, in order to…
Coupled spin chains are promising candidates for wiring up qubits in solid-state quantum computing (QC). In particular, two nitrogen-vacancy centers in diamond can be connected by a chain of implanted nitrogen impurities; when driven by suitable global fields the chain can potentially enable quantum state transfer at…
Classical molecular dynamics (MD) simulations were employed to investigate the adsorption behaviors of arginine-glycine-aspartate (RGD) tripeptide onto the negatively charged hydroxylated/nonhydroxylated rutile (110) surfaces, mediated by biologically important cations (Na+ or Ca2+). The simulation results indicate th…
We examine for the first time how chemically and thermally stable gold nanoparticles (NPs), prepared by a silane conjugation approach, affect both the thermal and the electro-optical properties of a nematic liquid crystal (LC), when doped at concentrations ranging from 0.25 to 7.5 wt%. We find that the octadecylsilane…
We present in this work a systematic study to analyze the influence of water and filler content on the dielectric response of silica-filled rubber compounds. For nanoparticle-filled polymers an additional dielectric process is usually observed in the loss dielectric spectra at frequencies lower than the alpha (α) or s…
The structure of (B2O3)n clusters (n = 1-6) are investigated using the method combining the genetic algorithm with density functional theory. Benchmark calculations indicate that TPSSh functional is reliable in predicting the energetic sequences of different isomers of (B2O3)n cluster compared to the high-level couple…
The present study investigated the optimization of grinding AISI 316 stainless steel by the Taguchi and grey relational analysis under the three environments of dry, conventional, and cryogenic cooling. The performance characteristics considered are, the material removal rate (MRR), surface roughness (Ra), and grindin…
In light of spectroscopic and electrical investigations, ammonia gas sensing mechanism in polypyrrole (PPy) nanotubes/nanorods has been discussed. For improvement in the gas sensing properties of PPy and its surface to volume ratio, nanotubes and nanorods have been synthesized by anionic dye and anionic surfactant dir…
Fe-based superconductors (FeSC) exhibit all the properties of systems that allow the formation of a superconducting phase with oscillating order parameter, called the Fulde–Ferrell–Larkin–Ovchinnikov (FFLO) phase. By the analysis of the Cooper pair susceptibility in two-band FeSC, such systems are shown to support the…
Thin liquid crystalline shells surrounding and surrounded by aqueous phases can be conveniently produced using a nested capillary microfluidic system, as was first demonstrated by Fernandez-Nieves et al. in 2007. By choosing particular combinations of stabilizers in the internal and external phases, different types of…
An extended dynamic and capillary rheological study of molten flax and sisal polypropylene (PP) composites was performed. Fiber concentration varied from 20 to 50 wt% and shear rate from 0.1 rad s−1 to 10,000 s#142;−1. Maleic anhydride‐grafted‐PP was used as compatibilizer; it strongly reduces PP and composite viscosi…
X-ray photoelectron spectroscopy (XPS) spectra are presented, which are obtained from an oxygen-free single crystalline (sc-) titanium nitride (TiN) sample. The investigated film has been grown on a magnesium oxide (MgO) single crystal with the (001) orientation. Unbalanced Reactive Magnetron Sputter deposition was us…
We describe electrophoresis of spherical dielectric particles in a uniformly aligned nematic medium with a negative dielectric anisotropy. A spherical particle that orients the liquid crystal (LC) perpendicularly to its surface moves under the application of a uniform direct current or alternating current electric fie…