Materials Literature
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Aluminum nitride (AlN) has been widely used as a heat sink material in conduction-cooled superconducting coils but is hard to process. We have therefore developed an easily processed Dyneema-fiber-reinforced plastic (DFRP) with high thermal conductivity. Making small superconducting coils with DFRP or AlN bobbins, coo…
A new ligand of 4,7-diphenyl-1,10-phenanthroline-2,9-dicarboxylic acid (DPPDA) and Eu3+chelate compound of this ligand were prepared. Then DPPDA-Eu3+ doped silica fluorescent nanoparticles of DPPDA-Eu3+/SiO2 with primary amino groups on their surface were developed using a water-in-oil (W/O) microemulsion technique. C…
Abstract Partial methylation of p‐(benzyloxy)calix[6]arene leads to the corresponding trimethylated C3v derivative. This compound was used for the synthesis of new functional calixarenes. The presence of the p‐(benzyloxy) substituent allows this new C3v derivative to be directly oxidized to the tris(quinone). These ne…
Recently, polarization fatigue in ferroelectric polymers has attracted much attention due to their potentials in nonvolatile memory devices, although the mechanism behind is still an open question. In this letter, we report the strong dependence of polarization fatigue on poling voltages, which indicates that the appl…
Modelling of local carbon deposition from methane and ethene injection through graphite and tungsten test limiters in TEXTOR, Ding, R, Kirschner, A, Borodin, D, Brezinsek, S, Kreter, A, Tokar, M Z, Chen, J, Schmitz, O, Philipps, V, Samm, U, Li, J, the TEXTOR team
An experimental technique based on the thermal wave approach for measuring the thermal conductivity of liquids is developed in this paper. A stainless steel strip functions as both a heating element and a sealing cover for a chamber containing a test liquid. A periodic current passing through this metal strip generate…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” opt…
Abstract Microcrystalline silicon has its own macroscopic characteristics which are different from each of the single phase characteristics. Hence, each phase of µc‐Si:H plays an important role in electronic transport. In this paper, we model a basic Schottky structure with a 1 µm thick, the device considered in our s…
The effects of an electric field on the electronic spectrum and localization properties of quasiperiodic chains are studied. As quasiperiodic systems, we use the Harper and the Fibonacci potentials since we prove that both are closely interrelated. In the limit of a strong field, a ladder spectrum with localized state…
Abstract Dielectric properties of hollow Al2O3 nanoparticle‐dispersed epoxy matrix composites in a frequency range from 18 to 30 GHz have been studied. Hollow Al2O3 nanoparticle‐dispersed composites show lower dielectric properties compared with those of solid α‐Al2O3 nanoparticle‐dispersed ones. The hollow part insid…
Calcined clay is a granular agglomerate of clay. It has a large surface area and myriad small pores, but also has a low easily available water (EAW) and water-buffering capacity (WBC). In this research, calcined clay was modified to enhance its low EAW and WBC and to allow it to substitute for subsidiary materials lik…
We have studied the behavior of the x-ray magnetic circular dichroism (XMCD) signals recorded at the Fe $K$ edge through the ${\text{Ho}}_{1\ensuremath{-}x}{\text{Lu}}_{x}{\text{Fe}}_{2}$ series in which the system is driven through a magnetic compensation by varying the concentration of the magnetic rare-earth metal,…
The contact mechanical properties of the ZrB 2 –30% SiC ultra‐high‐temperature ceramic (UHTC) were studied from room temperature up to 800°C in air, by combining Hertzian indentation tests with finite element modeling. It was found that the elastic modulus and yield stress decrease with increasing temperature, especia…
Abstract The white line and X‐ray absorption near edge spectros‐copy (XANES) spectral regions of the Ge K edge, ∼11100 to 11112 eV, and between 11112 and 11180 eV and beyond, contain electronic structure information that complements near‐neighbor bonding information in the single‐scattering EXAFS regime. The multiple‐…
The complex phosphate tricaesium calcium iron bis(diphosphate), Cs(3)CaFe(P(2)O(7))(2), has been prepared by the flux method. Isolated [FeO(5)] and [CaO(6)] polyhedra are linked by two types of P(2)O(7) groups into a three-dimensional framework. The latter is penetrated by hexagonal channels along the a axis where thr…
A novel series of chiral dopants synthesised from (S)-1, 2-propanediol and mesogenic carboxylic acids were characterised by Fourier transform infrared and 1H nuclear magnetic resonance, and their helical twisting properties were investigated by doping the chiral dopants into a nematic liquid crystal host (SLC-1717). T…
An inexpensive and simple method of synthesis of highly fluorinated alkyl–aryl ethers with nitro- and cyano-group at the para-position was described. Obtained ethers were converted to liquid-crystalline biphenyls, tolanes, esters and pyrimidines.
The X-ray diffraction (XRD) structures for new isoforms of [M(H 2 O) 6 ][M(HATP) 2 ]2(HDPA)xH 2 O, ATP = adenosine 5'-triphosphate, DPA = 2,2'-dipyridylamine, M = Mg(II), x = 6H 2 O, 1, M = Ca(II), x = 8H 2 O, 2 were determined by using rotating anode on molybdenum target X-ray source and Kappa CCD with confocal focus…
We investigate the spectral evolution of an antiferromagnetic insulator, La 0.2 Sr 0.8 MnO 3 , exhibiting linear specific heat, using state-of-the-art high resolution photoemission spectroscopy. Experimental spectral functions exhibit Fermi liquid-like energy dependence at all the temperatures studied. Room temperatur…
In the title dye compound, C(19)H(14)BF(7)N(2), the boron-dipyrromethene core lies on a crystallographic mirror plane which bis-ects the BF(2) and penta-fluoro-phenyl groups. The dihedral angle between the penta-fluoro-phenyl ring and the tricyclic system is thus 90° by symmetry. The sp(3)-hybridized B atom has a slig…