Enhancement of the dielectric constant of Ta2O5 through substitution with TiO2

Article Abstract:

Better performance from smaller components is the major demand in the microelectronics industry but the dielectric constant has a limiting effect on miniaturization for capacity components. Therefore, enhancement of dielectric constant to increase miniaturization is essential while compatibility with current fabrication processes is important. Tantalum oxide (Ta2O5) can be enhanced from a 35 to 126 dielectric constant through the addition of 8% titanium dioxide (TiO2). The compatibility of Ta and Ti with the present fabrication processes indicates its application in future microelectronics.

Microelectronics, Titanium dioxide, Tantalum

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Enhancement of polymerization rates for rigid rod-like molecules by shearing

Article Abstract:

Shear flow greatly accelerates the rate of polymerization and the molecular weight of the polymers that are produced. The polymers' usefulness in making strong, high-modulus fibers has prompted the search for ways of improving the polymerization reaction. Shear flow boosted the rate at which p-phenylene diamine and terephthaloyl chloride engendered the polymer poly(p-phenylene terephthalamide) by inducing the molecules to reorient themselves.

Usage, Polymers, Polymerization, Shear flow

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Enhancement of interfacial catalysis in a biphasic system using catalyst-binding ligands

Article Abstract:

A promoter ligand, which forms a bond with organometallic catalysts, helps improve the efficiency of the catalyst at the interface in a two-phase system with the catalytic complex and the products in two different phases. There is an increase in catalyst concentration due to ligand binding. Use of a PPh3 promoter ligand increases the rate of hydroformylation of 1-octene by about 10 to 50 times, when a rhodium complex functions as a catalyst.

Analysis, Ligands, Ligands (Chemistry), Organometallic compounds, Platinum group catalysts

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