PREPARATION STRUCTURE PROPERTIES AND APPLICATIONS OF CO CRYSTALS AND NANOPOROUS CRYSTALLINE PHASES O...

Molecular crystals are characterized by strong intramolecular forces and much weaker intermolecular forces. High-pressure spectroscopic studies provide useful data for refining the various model potentials which are used to predict of the physical properties of such systems as well as for the format[r]

Spinel ferrites with the general formula AFe 2 O 4 (A = Mn, Co, Ni, Mg, or Zn) are very important magnetic materials because of their interesting magnetic and electrical prop- erties with chemical and thermal stabilities [ 1 ]. Magnesium ferrite (MgFe 2 O 4 ) is one of[r]

Spin labeling, as a part of electron paramagnetic resonance (EPR), became one of the most sensitive and adequate methods for investigation the structure, properties of different biological systems, their dynamics, and mechanisms of various pr[r]

In addition to the relatively exotic structural composites described above, more conventional materials have also been fabricated from compo- sites. These include construction materials such as concrete, which is a mixture of sand, gravel, and cement. Reinforced concrete is another exa[r]

The alloy of NiPt nanoparticles was successfully synthesized by galvanic replacement method in which Ni nanoparticles used as the templates and H2PtCl6 solution as additional reagent. The preparation conditions of Ni nanoparticle were optimized. The effect of platinum contents on the structure, morp[r]

Conclusions
In conclusion, a stable hybrid system made by an organo- metallic moiety linked to gold nanoparticles was synthe- sized and characterized and XRD, TEM, and XPS analyses confirmed the link between Au and Pd(II) through S-bridge. The nanoparticles are homogene[r]

earlier, chain sliding is relatively difficult in three-dimensional (thermoset) polymers. Hence, thermosets are relatively rigid and brittle compared to thermoplastics.
Long-chain polymeric materials exhibit a transition from rigid glass- like behavior to a viscous flow behavior above a tem[r]

Specimen Preparation
Nanoporous AAO was prepared electrochemically using a two-step anodization technique to achieve an oxide film with a regularly ordered porous structure. The first anod- ization was carried out until the residual Al film thickness approached the desired lev[r]

• High quality single crystalline nanowires with well-controlled composition and electronic properties
Challenges :
• Controlling diameter and orientation of the nanowires which impede the success of Controlling diameter and orientation of[r]

The semiconductor diode laser chips AlGaAs of the matrix structure (linear bars arrays structure), having an output opticalpower of 2W were packaged at the semiconductor laser labrotary - Institute of Materials Science. We have studied some its properties such as: the temperature dependence of laser[r]

It was illustrated that the structure of materials depends on the various growth durations, which transformed from the multiple phases hexagonal and cubic phases to the single hexagonal [r]

© 1999 by CRC Press LLC
ten chapters. The introduction chapter starts out with a definition and evolution of micro/nanotribology, description of various measurement techniques, and description of various industrial applications where the study of[r]

1. Introduction
One-dimensional quantum wires are of great scienti®c interest due to their great potential for testing and understanding fundamental concepts about the roles of dimensionality in mesoscopic physics and for applications in nanodevices [1,2]. For in[r]

(BQ) Part 1 book Organic chemistry has contents: Chemical bonding, alkanes, conformations of alkanes and cycloalkanes, alcohols and alkyl halides, structure and preparation of alkenes elimination reactions, stereochemistry, nucleophilic substitution,... and other contents.

with the precursor of TiCl 3 . Normally, anatase TiO 2 film can be fabricated via the anodic oxidation hydrolysis of TiCl 3 solution [17,18]. Recently, Hosono et al. synthesized rectangular parallelepiped rutile TiO 2 films by hydrother- mally treating TiCl 3 solution with the additi[r]

3. Preparation and characterization of (Ba 0.6 ,Sr 0.4 )TiO 3 thick films for application to embedded multilayered capacitor structures
The demand of miniaturization and increased functionality in electronic devices trigered the need of finding ways to[r]

Results and discussion
Controlling d p and l p of AAO
Figure 2 shows SEM images of AAO routinely fabricated by anodization of Al in 0.3 M oxalic acid with typical pore morphologies observed from the top surface and in a cross-sectional view. Pore[r]

Significant differences have been observed in the quality of the films depending on the nature of the substrate. The quality can be described by intrinsic parameters such as the crystallinity (i.e., the degree to which non- crystalline phases are present). The uniformity[r]

The reduction of the excitonic strength with increasing cobalt doping can be explained in terms of the increased carrier scattering due to increased disorder in the[r]

4.7 Radiation mode couplers
4.7.1 Counterpropagating radiation mode coupler: The side-tap grating
These gratings couple from a forward-propagating guided mode to a back- ward-propagating cladding mode, or a continuum of radiation modes. In this section, a new and simple theory is p[r]