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The improvement of thin polymer film properties through plasma immersion ion implantation and deposition technique
(2001-12-01)
Thin polymer films were deposited from acetylene and argon mixtures by plasma immersion ion implantation and deposition. The effect of the pulse frequency, v, on molecular structure, optical gap, contact angle and hardness ...
Optical limiting behavior of tungstate fluorophosphate glasses
(2003-12-01)
Nonlinear absorption measurements were performed on fluorophosphate glasses with high concentration of tungsten oxide. Large two-photon absorption coefficients, α2, were determined at 660 nm using nanosecond laser pulses. ...
Corrosion protection of fluorzirconate glasses coated by a layer of surface modified tin oxide nanoparticles
(2006-04-28)
The protection efficiency against water corrosion of fluorozirconate glass, ZBLAN, dip-coated by nanocrystalline tin oxide film containing the organic molecule Tiron® was investigated by X-ray photoelectron spectroscopy ...
Photo-oxidation of polyphenylenevinylene chains in Langmuir-Blodgett and cast films
(2005-12-01)
Poly(p-phenylene vinylene) (PPV) derivatives are well known for their applications in polymer light emitting diodes (PLEDs). These derivatives are highly susceptible to photooxidation though, which is mainly caused by the ...
Multiple minima hypersurfaces procedures for biomimetic ligands screening
(2011-09-08)
In this work the interaction of the pesticide carbaryl with two groups of biomimetic ligands, peptides and MIPs was screened by multiple minima hypersurfaces (MMH) procedures, through the AM1 semiempirical method. Data ...
Mechanical Properties of Coconut Fibers Reinforced Polyester Composites
(Elsevier B.V., 2011-01-01)
Actually, studies about the utilization of natural fibers as reinforcement in polymeric composites are increasing due to the improvements that fibers can provide to the product. In this work, chemical modification of the ...
Stacking faults in SiCf/SiC composite obtained by chemical vapor reaction process
(2008-12-01)
SiC fiber-reinforced SiC matrix composite (SiCf/SiC) is one of the leading candidates in ceramic materials for engineering applications due to its unique combination of properties such as high thermal conductivity, high ...
Crystallization process and chemical disorder in flash evaporated amorphous gallium antimonide films
(1994-01-01)
In this work we describe a flash evaporation system specially built to produce amorphous films of III-V compounds and characterize GaSb films using optical, electrical and X-Ray diffraction measurements. Changes in the ...
Effect of acid-ethanol treatment followed by ball milling on structural and physicochemical characteristics of cassava starch
(Wiley-v C H Verlag Gmbh, 2010-05-01)
Structural and physicochemical characteristics of cassava starch treated with 0.36% HCl in anhydrous ethanol during 1 and 12 h at 30, 40, and 50 degrees C followed by ball milling for 1 h were analyzed. Average yield of ...