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Euro Biotechnology 2016
November 07-09, 2016
Volume 6, Issue 7(Suppl) J Biotechnol Biomater
ISSN: 2155-952X JBTBM, an open access journal
conferenceseries .com
November 07-09, 2016 Alicante, Spain
12th Euro Biotechnology Congress
Growth and characterization of Ag-Ti thin films obtained by thermionic vacuum arc (TVA) method
for biomedical applications
Aurelia Mandes, Rodica Vladoiu and Virginia Dinca Balan
Ovidius University Constanta, Romania
S ilver and silver-based compounds are known as potent antibacterial agents having a large spectrum of activity and they
have been studied in biomedical applications for many years. Furthermore, in weird situations, the incorporation of silver
into Ti compounds can modify their properties by acting as a solid lubricant. It is bioinert, it does not react with anything
inside the body, making it the prime candidate for use in procedures such as dental implants, orthopaedic rods, bone plates
and other prosthetics. The aim of this paper is to investigate the growth and structure properties of Ag-Ti thin films deposited
by thermionic vacuum arc (TVA) technology on silicon, glass and OLC 45 special substrate. TVA method consists from
an externally heated cathode surrounded by a Wehnelt cylinder that concentrates high voltage accelerated electrons on the
anode material. The anode is a crucible with a spoon like shape which contains the material to be deposited (Ag-Ti). Due to
the applied high voltage, continuous evaporating anode material ensures the metal vapor density in steady state in order to
ignite and to maintain a bright discharge in carbon vapors in the inter-electrodes space. Because the discharge sustaining gas
is just the evaporating atoms in vacuum, the carbon film deposition is carried out in high purity conditions. The properties
of the deposited Ag-Ti thin films were investigated in terms of morphology, tribology and wettability. The thin films were
characterized using Scanning Electron Microscopy with energy-dispersive X-ray detection (SEM/EDX). Also, the free surface
energy has been evaluated by means of Surface Energy Evaluation System using contact angle method. With this measurement
we can evaluate the hydrophilicity or hydrophobicity of a thin film.
Biography
Aurelia Mandes has completed her Doctoral studies at the University of Bucharest in 2010 with the thesis entitled Comparative study of carbon nanostructures
deposited by the thermionic vacuum arc method and magnetron sputtering. She has 24 papers published in international journals and three chapters in books.
Aurelia Mandes et al., J Biotechnol Biomater 2016, 6:7(Suppl)