Materials Literature
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Several different compositions of tellurium-thallium oxide glasses were fabricated and tested for their Raman gain performance. The addition of PbO to the glass matrix increased the surface optical damage threshold by 60-230%. The maximum material Raman gain coefficient experimentally obtained was (58 +/- 3) times hig…
Gram-scale, teardrop-like, monodisperse ZnO nanocrystals with a well-resolved absorption onset and a strong sharp UV emission were prepared by thermal decomposition of ZnO-oleic acid complexes in hexadecylamine.
A systematic model study on the role(s) of putrescine homologues on silicification is presented and it is proposed that electrostatic forces between additive and silicic acid, and the hydrophobic behaviour of the additives are both important in silicification.
The synthesis of four bis-macrocyclic conjugates made from the coupling of either diaza-15-crown-5 ethers (1 and 3) and diaza-18-crown-6 ethers (2 and 4) to either amide or carboxylate functionalized cyclen (1,4,7,10-tetraazacyclododecane), and their corresponding cationic Tb(III) complexes, Tb-1, Tb-2, and neutral co…
Abstract—We study the energy conservation property and loss condition of a left-handed material (LHM). First we argue by energy conservation that an LHM has to be a backward-wave material (BWM). Then we derive the equivalence of the loss and the Sommerfeld far-field radiation conditions for BWM. Next, we solve the rea…
A nanocomposite material, composed of nano-size inorganic-filler added to a low-density polyethylene (LDPE), was subjected to electrical property investigations. The volume resistibility of LDPE, under 80 kV/mm DC field at 90 C, increases by the power of 10 due to the addition of only a few percent of nano-filler. On…
The crystals of novel imidazoanthraquinol-type clathrate hosts exhibit sensitive colour change and fluorescence enhancement behaviour upon enclathration of various kinds of organic solvent molecules. The optical changes are greatly dependent on the identity of the enclathrated guest molecules. To elucidate the enclath…
Abstract Cast stainless steels are usually specified on the basis of composition by using the alloy designation system established by the Alloy Casting Institute. This article discusses the corrosion behavior of heat-resistant alloys due to oxidation, sulfidation, and carburization. It describes the influence of the m…
A shallow shell model is developed for the elastic buckling of a single wall car bon nanotube under a uniform external axial pressure by using the nonlocal elastic theory. Effects of the small size scale are incorporated in the formulation Critical conditions are given under the axial buckling pressure for a single-w…
The purpose of the present work consists in obtaining ductile cast iron that will be used in the shaft production, with the following mechanical characteristics: minimum tensile strength of 700 N/mm², minimum yield strength of 450 N/mm², minimum elongation of 5%, and hardness in the range of 235 HB to 285 HB. The most…
Pressure expanding treatment is an effective method for improving the piezoelect ric activity of cellular PP films. In this work, the character of trap-level dis tribution for positively corona charged cellular PP films and the influence of t he pressure expanding treatment on its charge stability and charge transport…
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Weldability of Ti–4.8%Ta–1.8%Nb alloy, for use in electrolytic dissolver of nuclear fuel reprocessing plant, was evaluated in autogenous bead-on-plate gas tungsten arc welds made at two different heat inputs. Pure titanium was also welded for comparison. A secondary shielding setup was employed for protection of the w…
The role of diads …︁ in molecular electronics has been investigated with the recently synthesized tetrathiafulvalene‐σ‐trinitrofluorene diad (depicted on the cover). As determined by cyclic voltammetry, the HOMO–LUMO gap of this diad is as low as ∼0.3 eV, close to that of the theoretical Aviram–Ratner TTF‐σ‐TCNQ molec…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Jürgen Ristein; The Physics of Hydrogen‐Terminated Diamond Surfaces. AIP Conf. Proc. 30 June 2005…
Commercially available multicomponent soda lime silicate glass (SLSG) specimens were chemically treated in a CuCl molten bath and subsequently annealed in a hydrogen atmosphere. Mechanical properties of these specimens were monitored as function of parameters characteristic of the ion exchange process. Applying the co…
Abstract. A liquid foam is an easily accessible system that displays typical features of soft condensed matter. Here we summarise recent theory and experiments regarding foam structure, drainage and rheology, including the flow of trains of bubbles through specifically designed channels.
Quantum dots in the Si/Ge and InAs/GaAs materials systems are examined by means of photoluminescence. The spectroscopic study of Si/Ge quantum dots has demonstrated two different radiative recombin ...
The disadvantageous effects of colloidal SiO2 layer and micro-content of metal oxide adsorbed on SiC powder surface on SiC slurry stable dispersion were studied, and the novel method to avoid this disadvantage was proposed. By acidwashing, on the one hand, because the maximum Zeta potential of SiC powder increases to…
(2005). The Refractories Industry - A Review. Materials Technology: Vol. 20, No. 4, pp. 225-232.