Patterning hydroxyapatite biocoating by electrophoretic deposition

Wang, R.; Hu, Yi

doi:10.1002/jbm.a.10114

Cited by 32 publications

(18 citation statements)

References 38 publications

(31 reference statements)

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“…For example, patterned HA deposits on Si and Ti substrates have been developed for applications in implants and biosensors (Wang & Hu 2003). EPD was used in combination with surface patterning of the cathode, e.g.…”

Section: Epd Of Hamentioning

confidence: 99%

“…The mechanisms for forming HA patterns could involve local variations of the electric field resulting from the presence of the second metal on the cathode. Figure 3 shows a schematic of the EPD set-up used, indicating also the steps followed to prepare the Au-patterned cathode (Wang & Hu 2003). Moreover, EPD has been used for the fabrication of uniform HA coatings on cortical screws for improved bone fixation and reduced risk of interfacial loosening (Yildirim et al 2005) and for achieving HA coatings with enhanced corrosion protection of metallic substrates in simulated body fluid (SBF) (Sridhar et al 2003;Wang et al 2005;Kwok et al 2009).…”

Section: Epd Of Hamentioning

confidence: 99%

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Electrophoretic deposition of biomaterials

Boccaccını

Keim

et al. 2010

J. R. Soc. Interface.

589

410

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Electrophoretic deposition (EPD) is attracting increasing attention as an effective technique for the processing of biomaterials, specifically bioactive coatings and biomedical nanostructures. The well-known advantages of EPD for the production of a wide range of microstructures and nanostructures as well as unique and complex material combinations are being exploited, starting from well-dispersed suspensions of biomaterials in particulate form (microsized and nanoscale particles, nanotubes, nanoplatelets). EPD of biological entities such as enzymes, bacteria and cells is also being investigated. The review presents a comprehensive summary and discussion of relevant recent work on EPD describing the specific application of the technique in the processing of several biomaterials, focusing on (i) conventional bioactive (inorganic) coatings, e.g. hydroxyapatite or bioactive glass coatings on orthopaedic implants, and (ii) biomedical nanostructures, including biopolymer-ceramic nanocomposites, carbon nanotube coatings, tissue engineering scaffolds, deposition of proteins and other biological entities for sensors and advanced functional coatings. It is the intention to inform the reader on how EPD has become an important tool in advanced biomaterials processing, as a convenient alternative to conventional methods, and to present the potential of the technique to manipulate and control the deposition of a range of nanomaterials of interest in the biomedical and biotechnology fields.

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Section: Epd Of Hamentioning

confidence: 99%

Section: Epd Of Hamentioning

confidence: 99%

Electrophoretic deposition of biomaterials

Boccaccını

Keim

et al. 2010

J. R. Soc. Interface.

589

410

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“…But EPD has been proven to be a very versatile coating method for a large variety of materials [131,132]. There a numerous publications on all kinds of EPD coatings (aqueous and nonaqueous systems) like hydroxylapatite layers [133][134][135][136], dense titania layers [47,137], zirconia layers [138], silica sol-gel deposition [139], SiC oxidation protection layers [140], electrolyte layers for SOFC [141][142][143][144][145][146], MgO coatings [147,148], 0.1-300 µm thick CeO 2 films [149], CdS/Cu 2 S and TiO 2 for solar cells [150,151], phosphors [152,153], PZT layers [154], BaTiO 3 films 1-5 µm thick [155], quantum sized nano-ZnO films [156], up to 4 mm thick Ni-alumina cermet layers [157], abrasion resistant WC-Co layers [158], diamond films on silicon substrates [159][160][161], MoS 2 lubricant films [162], ordered gold colloid monolayers [27,163], and alumina thermal insulations films [164].…”

Section: Deposition Of Coatingsmentioning

confidence: 99%

Preparation of High-Purity Glasses and Advanced Ceramics Via EPD of Nanopowders

Clasen

2011

Nanostructure Science and Technology

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For the preparation of advanced materials via a powder technological route the shaping process is most important after the synthesis of the powder. Therefore high production rates and the formation of a homogeneous compact are generally desirable. Furthermore, a high green density is necessary to reduce shrinkage during drying and sintering. This is of special importance for near net shaping or microstructuring. For coatings an even thickness with a good coverage of the edges is an additional specification that has to be fulfilled. The typical shaping processes for fine or advanced ceramics with particle sizes in the µm or even sub-µm region are slip casting, forming of high-viscous masses, and dry pressing. The decreasing of particles size leads to the area of nanoparticles with sizes less than 100 nm. These nanopowders show higher sintering activity leading to a decrease of sintering temperature. Thus smaller final grain sizes can be achieved or even quantum size effects can be observed. For glasses new perspectives are opened with nanopowders. Due to the reduction of processing temperatures nanosized glass powders can be completely sintered to transparent glasses via viscous flow below the crystallization temperature. Thus no crucibles are needed any more and high-purity glasses can be prepared. For coatings on substrates with limited temperature stability glazes and enamels can be applied without additional low melting components. Theses fluxes generally reduce the chemical stability of the coating.As these nanopowders tend to aggregate due to the increased influence of van der Waals attraction forces, these nanopowders have to be dispersed perfectly. For that suspensions are most suited and the formation of aerosols (dust of nanopowders) is prevented, which might be hazardous. In electrostatically stabilized suspensions the dispersed particles show a surface charge, which can be directly used for moving this particles in an applied external electric field leading to an electrophoretic deposition (EPD) [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. But it should be kept in mind that the electrostatical as well as

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“…Chemical and morphological properties of coatings for implants influence the biological response of the bone tissue surrounding the implant [1][2][3][4]. A favourable biological response corresponds to a bone remodelling with bone growth onto the implant surface (enhanced osteointegration).…”

Section: Introductionmentioning

confidence: 99%