2012 - Europe Direct Iasi

Authors
Institution
Description
EUROINVENT 2012
M. Poiană 1 , M. Dobromir 1 , V. Nica 1 , A.V. Sandu 2 and V.
Georgescu 1
1
Faculty of Physics “Al. I. Cuza” University of Iasi
2
Gheorghe Asachi Technical University of Iasi
Metal matrix nanocomposites are formed from a metal matrix in
which nanosized particles of another material are implanted, in a
view to obtain a material with new functional properties. We
prepared by electrodeposition Co-TiO2 nanocomposite films
composed of a Co metal matrix containing embedded TiO2 nanoparticles. This is a very appropriate and inexpensive method
to produce nanocomposite films.
The electrolyte contained CoSO4·7H2O, H3BO3, NaCl,
Na2SO4·10H2O and TiO2 nanoparticles, which were added to the
plating solution with continuous stirring. The film composition
was controlled either by the addition of different concentrations
of TiO2 nanoparticles in the solution, or by modifying some
electrodeposition parameters (such as applied voltage or stirring
speed of the electrolyte). The Co-TiO2 films were characterized
by X-ray photoelectron spectroscopy, X-ray diffraction and
scanning electron microscopy analysis.
Magnetic measurements were carried out at room temperature by
means of two methods: using an induction type device with data
acquisition system and by torque magnetometry. The
introduction of TiO2 into the thin nanocomposite film changes
the direction of the easy magnetization axis in relation to the film
plane (from in-plane to almost normal to plane) as an effect of
the morphology modification. We have found that functional
properties of the Co-TiO2 nanocomposite films depend on the
TiO2 nanoparticles content, which is influenced by deposition
parameters. The Co-TiO2 nanocomposite films (containing about
1.3 at. % Ti) exhibit a giant magnetoresistance contribution of
47.6 %. This effect is very promising for potential applications of
Co-TiO2 nanocomposite films in spintronics.
X. 27.
Research studies on the development of textile products for
Title
physically disabled people
Authors Ioana Petcu
“Gheorghe Asachi” Technical University, Faculty of Textile-
Institution
Leather Engineering and Industrial Management
The product we are trying to develop is a pair of compressive
heatable trousers for people who suffer from the paralysis of the
Description lower limbs. No matter the type of disabling condition –in most
cases, the patients face a pronounced feeling of cold due to the
lack of muscle activity and circulatory problems. Through the
electroconductive wires inserted into the structure, the product
Innovative Researches
182