Materials Literature
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Significant improvements of the semiconductive materials and the measurement techniques have been made in the last decades. This article has demonstrated that semiconductive materials with more robust processing properties can be developed. The cleanliness and surface smoothness have been dramatically improved because…
Abstract Organoclay polymer nanocomposites offer improved material properties at very low filler loadings making them of immediate interest for industrial applications. In this study two matrices are used : a polar polymer, PA12, and a non polar polymer, LLDPE. Many articles focused on the importance of the chemistry…
The effects of heat treating conditions on thickness of the oxygen-enriched layer or α-case in Ti-4.5%Al-3%V-2%Fe-2%Mo alloy were studied in comparison with Ti-6%Al-4%V alloy, and then the effects of these layers on the mechanical properties were investigated. The higher heating temperature and an extended heating tim…
Beryllium and beryllium oxide are attractive candidate materials for neutron reflector application in space reactors due to their beneficial combination of low density and high neutron moderation and reflection capabilities. Drawbacks to their use include the expense of working with toxic materials, a limited industri…
New wedge-shaped thermotropic liquid crystalline materials containing a guanidinium moiety at the apex organize into various supramolecular structures such as hexagonal columnar, rectangular columnar and Pm3n cubic mesophases depending on anions illustrating guest-directed self-organization in mesophases.
Branched poly(ethylene imine) (PEI) with primary, secondary and tertiary amine groups in a ratio of 1:2:1 was specifically functionalized at the primary amine groups with quaternary ammonium groups and C12 alkyl chains. This reaction was performed by treatment of PEI with functional cyclic carbonates, i.e. trimethyl-(…
Properties of the electrochemical capacitors composed of activated carbon fiber cloth (ACFC) electrodes and a mixed aqueous solution of and have been investigated. The specific capacitance of the capacitors increased with increasing the concentration of in the mixed solution. The maximum specific capacitance of (capac…
The fat body plays key roles in metabolism and sustenance of growth throughout the life of a silkworm, and thus represents a model tissue for studying development and metamorphosis. Analysis of 18,480 ESTs derived from larval and pupal fat body cDNA libraries allowed characterization of gene expression patterns in the…
Steel plate reinforced concrete (SC) structures composed of concrete and steel plates with headed studs are considered to be more effective than RC structures against aircraft impact.This is due to the effects of the steel plates, especially the rear-face steel plates.Thus, their application to outer walls and roofs o…
Electronic polarisabilities of rare earth metal ions are obtained front refractivity data (densities and refractive indices) for their crystalline trifluorides in order to make viable an analysis of refractivity data for silicate, aluminosilicate and phosphate glasses containing rare earth oxides. These data provide f…
Under solvothermal conditions the unprecedented nonanuclear Fe(III) aggregate [Fe9(mu3-O)4(mu-OH)4(hpdta)4]5- is formed through the formal encapsulation of [Fe(H2O)6]3+ by four [Fe2(hpdta)(H2O)2]+ units: the aggregates have ground state spins of S= 13/2 while the observed hysteresis below 1.8 K results from inter-clus…
Organic semiconductors containing metal binding sites within their molecular backbones are of a general interest in organic materials chemistry. In this paper, we describe a straightforward synthetic procedure, which gives access to a series of 2-(oligothienyl)-[1,10]phenanthrolines (nT-phen), 2,9-bis(oligothienyl)-[1…
Nanocrystalline TiO 2 /Brij and TiO 2 /Pluronic films were prepared with a view to their application in electrochromic and Grätzel cells and examination of their photocatalytic effect. The films were prepared from titanium (IV) isopropoxide with the addition of Brij 56 or Pluronic F127. Films were deposited by dip‐coa…
Abstract This paper is a review of charge exchange processes in rare earth doped insulating materials. After a description of experimental approaches for the location of impurity ions in the host gap, charge transfer and photoionization phenomena are presented. Experimental data are discussed and interpreted using sim…
The elastic stiffness coefficients of single crystal AlLi with cubic NaTl (B32) structure were calculated at 0 K from the first principles. The obtained elastic stiffness coefficients, in units of GPa, were c11=66.9, c12=38.2 and c44=51.7. Then the bulk modulus, Young’s modulus, shear modulus and Poison’s ratio were e…
In order to confirm and demonstrate Oxide Dispersion Strengthened (ODS) cladding fuel pin survival to high burn-up condition, an irradiation test in BOR-60 was conducted within the framework of JNC-Russian RIAR collaborative work. Two types of 9Cr martensitic and 12Cr ferritic ODS steel claddings were manufactured in…
High cycle fatigue properties of high strength steel were investigated. In the Fuel Cell(FC) system, various metals are used in hydrogen environment under cyclic loading. In this study, hydrogen was artificially charged into specimen of a Cr-Mo high strength steel, and the fatigue properties were compared with those o…
Recent optical measurements on single‐walled carbon nanotubes (SWCNT) showed highly anomalous behaviors indicating strong many‐electron effects. To understand these data, we performed ab initio calculation of electron‐hole interaction (excitonic) effects on the optical spectra of several SWCNTs. We employed a many‐ele…
Cardiovascular disease remains the number one cause of death in the United States. Most current surgical procedures to alleviate this disease rely on the availability of suitable small diameter vascular grafts, which are constrained by several limitations. Tissue engineering brings new hope to this field, but still fa…
On account of the search for the optimal composition and structure-phase state of Zr alloys much attention is paid to upgrade the E110 (Zr-1 %Nb) and E635 (Zr-1 %Nb-0.35 %Fe-1.2 %Sn) alloys that have proved well in terms of irradiation-induced creep and growth, high strength characteristics, and corrosion. The differe…