Materials Literature
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A polycrystalline chemical vapor deposited (CVD) diamond detector was installed on a JET tokamak in order to monitor the time dependent 14MeV neutron emission produced by D–T plasma pulses during the Trace Tritium Experiment (TTE) performed in October 2003. This was the first tentative ever attempted to use a CVD diam…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTOne-Step Exfoliation of Montmorillonite via Phase Inversion of Amphiphilic Copolymer EmulsionChih-Cheng Chou and Jiang-Jen LinView Author Information Department of Chemical Engineering, National Chung Hsing University, Taichung 402,…
Phase transitions from and to the quasicrystalline state show a typical signature due to some structural peculiarities. Both quasicrystals and most of their translationally periodic transformation products, the approximants, consist of the same basic structural units ('clusters'). This is the cause of low-energy inter…
Novel monolithic catalyst supports with regular three-dimensional structure and channel-to-channel interconnectivity have been fabricated using a direct ceramic fabrication technique known as “robocasting”. Using the oxidation of CO over a Pt/γ−Al 2 O 3 catalyst as a probe reaction, we have quantified the mass transfe…
Titania (TiO2) nanoparticles with primary diameters of less than 30 nm were produced by the thermal decomposition of TTIP and by the oxidation of TiCl4 in a cylindrical furnace reactor at 1200°C. Particle size, crystalline phase, and phase transformation were investigated as a function of precursor concentration and t…
Organosilicon films (Si:O:C:H) have the potential to replace as a lower dielectric constant microelectronic interconnection layer. The structure of Si:O:C:H films was characterized by and solid-state nuclear magnetic resonance (NMR) and also by X-ray photoelectron and Fourier transform infrared spectroscopies. Spin-co…
To develop the capability to create diamond electrodes with greater functionality, covalent modification was carried out on homoepitaxial single-crystal diamond electrode surfaces. (100) and (111) single-crystal boron-doped diamond electrodes were first prepared homoepitaxially, then subjected to oxidative treatments,…
We report the synthesis and mesomorphic properties of new bent-core (BC) mesogens exhibiting novel antiferroelectric switching columnar phases with rectangular as well as oblique lattices. The homologues with short chains show typical nonswitchable rectangular columnar (B 1 ) phase and a ferroelectric switching smecti…
Abstract This paper describes the electrical behavior of a thermosetting system, based on epoxy resin, containing metal plated fillers. Ceramic fillers such as chopped glass fibers and mica flakes were coated with copper by electroless plating and incorporated into an epoxy resin based on di‐glycidyl ether of bispheno…
Recent progress in experimental understanding of the A-Mg-R (A=Zn and Mg, R=rare-earth elements) magnetic quasicrystals is reviewed. The A-Mg-R quasicrystals have long been classified as spin-glasses because of their typical spin-freezing behavior at low temperatures. On the other hand, recent neutron diffraction expe…
Conductivity κ of propylene carbonate-diethyl carbonate (PC-DEC) and propylene carbonate-ethylene carbonate (PC-EC) solutions of lithium bis(oxalato)borate (LiBOB) was experimentally determined at temperatures θ from 60 to salt molalities from 0.04 to and solvent compositions from 0 to 0.7 weight fraction of DEC and E…
The crystal chemistry, thermal expansion behavior, electrical conductivity, chemical compatibility, and electrochemical performance in intermediate temperature solid oxide fuel cells (SOFCs) of perovskite oxides have been investigated. The samples crystallize in an orthorhombic structure, and the lattice volume increa…
Molecular analogues of the building units found in synthetic and natural zeolites can be synthesised with a number of different architectures and chemical compositions. These molecules can then be used as a platform for the synthesis of different types of material. In this article I will discuss the types of zeolite-l…
Landau-type theories describe the observed behaviour of phase transitions in ferroelastic and co-elastic minerals and materials with a high degree of accuracy. In this review, the derivation of the Landau potential G=1/2AthetaS [coth(thetaS/T)-coth(thetaS/TC)]Q2 + 1/4BQ4 + ... is derived as a solution of the general p…
Rodlike gold(I) complexes, [Au(C6F4OCmH2m+1)(C(triple bond)NC6H4C6H4OCnH2n+1)] (m=2, n=4, 10; m=6, n=10; m=10, n=6, 10), display interesting features. They are liquid crystals and show photoluminescence in the mesophase, as well as in the solid state and in solution. The single-crystal, X-ray diffraction structure of…
Abstract Mechanical properties (tensile, flexural, impact, and dynamic mechanical thermal analysis) of novolac type phenolic composites reinforced with jute/cotton hybrid woven fabrics were investigated as a function of fiber orientation and roving/fabric characteristics. Scanning electron microscopy (SEM) was carried…
Yttria-stabilized zirconia (YSZ) electrolyte disks with patterned Sr-doped LaMnO 3 (LSM) electrodes having different three-phase boundary (TPB) lengths ( l TPB ) , but the same electrode-electrolyte interface area, were prepared using photomicrolithography. Impedance spectra for half-cells were obtained under oxygen p…
Many of the mutagenic or lethal effects of ionization radiation can be attributed to damage caused to the DNA by low-energy electrons. To gain insight on the parameters affecting this process, we measured the low-energy electron (<2 eV) transmission yield through self-assembled monolayers of short DNA oligomers. The e…
Homogeneous surface coating of long carbon nanotubes is achieved by in situ polymerization of ethylene as catalyzed directly from the nanotube surface-treated by a highly active metallocene-based complex and allows for the break-up of the native nanotube bundles leading, upon further melt blending with HDPE, to high-p…
An overview is presented of low-dimensional electronic crystals that undergo a phase transition towards a low-temperature charge-density-wave (CDW) state. The emphasis is on inorganic compounds that develop an one-dimensional (1D) CDW. Low-dimensional features of crystal structures are discussed in relation to 1D elec…