Research Perspectives on Functional Micro and Nano Scale Coatings: New Advances in Nanocomposite Coatings for Severe Applications

Research Perspectives on Functional Micro and Nano Scale Coatings: New Advances in Nanocomposite Coatings for Severe Applications

Jaime Andrés Pérez Taborda (Universidad Tecnológica de Pereira, Colombia & Instituto de Microelectrónica de Madrid-CSIC, Colombia) and Elvis O. López (Centro Brasileiro de Pesquisas Físicas, Brazil)
Copyright: © 2016 |Pages: 34
DOI: 10.4018/978-1-5225-0066-7.ch006
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Abstract

Research topics related to the production of nanocomposites are the most important directions of development of new semiconductor engineering, ensuring high nanocomposites obtaining useful properties in the scope of biophysical characteristics, biomedical and piezoelectric applications. We present two case studies as Hydroxyapatite are in medical applications and aluminum nitride as acoustic wave sensor. Hydroxyapatite, is the main inorganic structure of the tooth enamel and bone and is a biomaterial that is commonly used in biomedical applications that involve bone substitution, drug delivery and bone regeneration because of its excellent biocompatibility, high bioactivity and good osseoconductivity. Since the past decade. Aluminum nitride (AlN), an electrical insulating ceramic with a wide band gap of 6.3 eV, is a potentially useful dielectric material very important in fields such as optoelectronic and micro electronics.
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1. Hydroxyapatite Nanostructured Films Fabricated By Rf Magnetron Sputtering For Biomedical Applications

Hydroxyapatite - HA (Ca10(PO4)6(OH)2),(Morgan, Wilson, Elliott, Dowker, & Anderson, 2000) is the main inorganic structure of the bone and enamel teeth and also is the main bioceramic that is commonly used in biomedical applications that involve drug delivery, (Hollister, 2005; Vallet‐Regí & Ruiz‐Hernández, 2011) bone repair and bone regeneration due its excellent properties of osteoinduction, osteoconduction and osseointegration (Astala & Stott, 2008; Paul & Sharma, 2006). Since past decades, the HA has been used as a bioactive coatings to improve the osteoconductivity of metallic implants for the orthopaedic applications. Metals as titanium and alloys have not the bioactive capacity, different deposition techniques to produce calcium phosphate (CaP) coatings has been developed to improve the osseointegration, osteoconduction and osteoinduction of the metallic implants (Dos Santos et al., 2010; Macaskie et al., 2005; Socol et al., 2004; Ueda, Narushima, Goto, Taira, & Katsube, 2007; Wang et al., 2006; Wen, Xu, Hu, & Hodgson, 2007).

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