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Photoacoustic investigations of thermal and electronic properties of single crystal Ge doped with Cr
(EDP Sciences, Les Ulis Cedex A, 2005)
A high purity single crystal Ge with a (1 1 1) orientation was doped with Cr. A thin film of Cr was evaporated and then diffused into Ge substrate. The photoacoustic PA amplitude and phase spectra were measured and numerically ...
Particle size effect: Methanol oxidation on supported Pt catalysts
(Trans Tech Publications Ltd, Durnten-Zurich, 2005)
The methanol oxidation was studied at two differently prepared supported Pt electrodes (Pt-C/GC and Pt/GC) in 0.5 M H2SO4 and 0.1 M NaOH. The supported Pt electrodes were characterized by AFM, STM TEM and HRTEM. The higher ...
Nickel/silica precursor from sodium silicate solution - Synthesis and characterization
(Trans Tech Publications Ltd, Zurich-Uetikon, 2005)
The aim of this paper was the investigation of the influence of synthesis parameters, as well as the order of synthesis steps, in procedure of chemical precipitation, on the properties of synthesized nickel precursor. The ...
Anisotropy in thermal and electronic properties of single crystal GaSe determined by the photoacoustic method
(EDP Sciences, 2005)
Anisotropy in thermal and electronic properties for two directions of thermal wave propagation in the GaSe single crystal was investigated using photoacoustic (PA) frequency transmission techniques. First, the electric ...
Photoacoustic determination of thermal and electron transport properties of single crystal NiO
(EDP Sciences, 2005)
Thermal and electron transport properties of single crystal NiO were determined using the photoacoustic technique. NiO single crystals were prepared using the Verneuil method and were easily cleaved parallel to the (100) ...
Investigation of the thermal diffusivity of thick film NTC layers obtained with the photoacoustic method
(EDP Sciences, 2005)
The thermal diffusivity of thick NTC layers based on a metal oxide powder mixture was measured at room temperature by the photoacoustic (PA) frequency transmission technique. The experimental PA amplitude and phase diagrams ...
Examinations of cross-linked polyvinylpyridine in open reactor
(Materials Science Forum, 2005)
Macroporous cross-linked copolymer of 4-vinylpyridine and 25% (4:1) divinylbenzene is analyzed under open conditions, that is in a continuous well-stirred tank reactor (CSTR). With this aim the appropriate bifurcation ...
Biotransformation of nitric oxide in the cerebrospinal fluid of amyotrophic lateral sclerosis patients
(Maney Publishing, 2005)
Recent findings indicate that nitric oxide (NO•) over-production might be an important factor in thepathogenesis of sporadic amyotrophic lateral sclerosis (SALS). We measured significantly higherconcentrations ...
Investigation of the interface states in the SiO2– Si system by photoacoustic method
(EDP Sciences, 2005)
The interface states in SiO2 - Si system was investigated by photoacoustic (PA) spectroscopy. The amplitude and phase spectra were measured and analyzed in dependence on the wavelength of excitation optical beam. In the ...
Characterization and catalytic activity of poly(4-vinylpyridine-co- divinylbenzene)-Co2+ complex
(Materials Science Forum, 2005)
Poly(4-vinylpyridine-co-divinylbenzene)-Co2+ was characterized using infrared spectroscopy (IR), thermogravimetric analysis (TG-DTA), N 2-physisorption and polarography. Thermal analysis suggests sufficient thermal stability ...