Author: Afnan Qurban ShaikhPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Electrochemical Surface Modification of Titanium Based Material with Detonation Nanodiamonds for Implant Applications
Author: Afnan Qurban ShaikhSurface Modifications and Growth of Titanium Dioxide for Photo-Electrochemical Water Splitting
Author: John AlexanderPublisher: Springer
ISBN: 3319342290
Category : Technology & Engineering
Languages : en
Pages : 366
Book Description
This outstanding thesis provides a wide-ranging overview of the growth of titanium dioxide thin films and its use in photo-electrochemicals such as water splitting. The context for water splitting is introduced with the theory of semiconductor-liquid junctions, which are dealt with in detail. In particular plasmonic enhancement of TiO2 by the addition of gold nanoparticles is considered in depth, including a thorough and critical review of the literature, which discusses the possible mechanisms that may be at work. Plasmonic enhancement is demonstrated with gold nanoparticles on Nb-doped TiO2. Finally, the use of temperature and pressure to control the phase and morphology of thin films grown by pulsed laser deposition is presented.
Surface Modification of Titanium Dioxide and Synthesis of Non-electroactive Coatings by Electrochemical Polymerization
Author: Rathnapala S. VithanagePublisher:
ISBN:
Category : Electrochemistry
Languages : en
Pages : 412
Book Description
Surface Modification of Titanium Bulk Materials and Its Adsorption Application
Author: Recent Developments of Electrodeposition Coating
Author: Andrzej ZielińskiPublisher:
ISBN: 9783036507378
Category :
Languages : en
Pages : 176
Book Description
This e-book presents a selection of papers focused on some novel aspects of electrodeposited coatings, in particular for medical applications. The biocoatings applied for surface modification of load-bearing implants are still being developed, especially for titanium implants, for which hundreds and thousands of possible technical solutions have been proposed using different techniques and materials. This book is a collection of papers that demonstrate appropriate attempts using various electrodeposition methods. The specific objectives are different, with several looking for improved bioactivity, another for antibacterial properties, and another for increased adhesion on the helix lines on dental implants. The e-book starts with a paper on the methodic development of electrodes for electrowinning. This is followed by paper on the real performance of the surface of dental implants, a subject not often addressed. The next paper focuses on electro-oxidation: a novel two-stage oxidation method, characteristic of the oxide layer on helix line of a model dental implant, and micro-arc oxidation of 3D printed titanium. The last paper focuses on coatings, describing the carbon nanotubes- (hydroxyapatite, chitosan), Eudragit-, and Fe-containing coatings. The e-book concludes with a review of all electrodeposition methods. It is a collection of papers describing novel results in electrodeposition biocoatings, which will be of interest for many scholars and researchers.
Surface Modification of Titanium Materials to Facilitate Cell Attachment, Biomineralization, and Interfacial Adhesion
Author: Michael J. AvaltroniPublisher:
ISBN:
Category :
Languages : en
Pages : 268
Book Description
Surface Modification of Titanium by Electrolytic Plasma Processing and In-vitro Studies
Author: Wisanu BoonrawdPublisher:
ISBN:
Category : Biomedical engineering
Languages : en
Pages : 104
Book Description
Electrolytic plasma processing (EPP) can be operated in two modes, namely plasma electrolytic saturation (PES) and plasma electrolytic oxidation (PEO). In this study, the PES was used to create hydrophilic surface profiles on titanium (Ti). The wettability, surface morphology characteristics and chemical composition of the treated samples were studi650ed as a function of PES processing parameters. The PES profiled surfaces comprised of a characteristic "hills and valleys" morphology because of continuous surface melting and freezing cycles. A bimodal surface profile was produced with 2-3 μm height hills and valleys with nano-roughness (≤ 200 nm). The produced profile resulted in a significant contact angle decrease (from 38.7° to 5.4°). Ratios of actual surface area to projection area (r) and fraction of solid surface remaining dry (j) were obtained from profilometry. The surface characteristics and large r values produced by PES were able to induce hemi-wicking. Hence, PES produced superhydrophilic surfaces on Ti. The bioactivity of PES treated Ti was evaluated using cell free and MC3T3 cells in-vitro studies. The treatedi surface significantly increased the bioactivity and formed stoichiometric hydroxyapatite after immersion in a bone cell culture medium for 21 days. Cells' attachment and proliferation studies indicated that PES treated surface significantly enhances the cells' adhesion and growth after 24 and 48 hr compared to the untreated surface. The results show that Ti surface profiling by PES constitutes a promising method to potentially improve bone implant bonding. PEO was used to produce titanium oxide (TiO2) coatings on Ti surface in potassium -phosphate electrolyte. The morphology, wettability, phase, and chemical compositions were studied as a function of processing parameters. The bioactivity of the coating was assessed by the ability to form biomimetic apatite in-vitro using cell culture medium. In-vitro studies using human mesenchymal stem cells were also conducted to evaluate cells' proliferation and viability of the treated Ti. The results revealed that the produced TiO2 coatings comprised pore features with the pore size increasing with applied current density and treatment duration due to high energy discharge channels at higher potential. The PEO treated Ti exhibited superhydrophilic characteristics with a contact angle
Surface Modification of Titanium with Gold Nanoparticles and Interaction with Prototype Protein
Author: Joseph Daniel PadmosPublisher:
ISBN:
Category :
Languages : en
Pages : 218
Book Description
Surface Modification of Titanium Oxide Nanofibers with Silver Nanoparticles for Application as Photocatalysts
Author: Nancy LaiFabrication and Biological Evaluation of the Coating Co-doped Strontium and Zinc Nanoparticles on Porous Pure Titanium Surface by Hydrothermal Method
Author: fuming hePublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
BackgroundFor dental implants, early infection and peri-implantitis after implant restoration are major reasons for implant failure1. Plaque biofilm formation is the initiator for implant-related infection2. Therefore, itu2019s urgent to develop a new antibacterial implant materials or treatment methods. It is found that nanostructured titanium surface can resist bacterial adherence and promote bactericidal capability3. Zinc (Zn) not only exhibits excellent antibacterial behavior with broad spectrum and limits drug-resistance bacteria induction, but also is active in osteogenesis4. Strontium (Sr) has various effects of improving immunologic reaction, promoting osteogenesis and inhibiting osteoclastic differentiation4. AimIn this study, Sr- and Zn- incorporated micro/nano-structured titanium surface with nanorods (MNT-Sr/Zn) was fabricated by a two-step hydrothermal process, aiming to improve osseointegration and reduce implant failure caused by implant-related infection and broaden new ideas for the future research on the antibacterial properties of biological materials.Materials & MethodsThe Mod Ti surfaces were used as a control. The characterization of different surfaces was detected by a field emission scanning electron microscope (FE-SEM) equipped with energy dispersive spectra (EDS) detector. Meanwhile, Staphylococcus aureus (S. aureus) was selected to evaluate antibacterial properties through Live/Dead Staining and watching the adhesive bacterial morphology under FE-SEM. Whatu2019s more, rat bone marrow-derived mesenchymal stem cells (rBMSCs) were cultured on the surfaces to detect their early osteogenic properties, like the alkaline phosphatase(ALP) activity and the expressions of osteogenesis related genes.Results The results confirmed that nanorod-like particles with a diameter of about 30-50 nm of MNT-Sr/Zn. In the EDS spectra, the elements of Zn and Sr were evenly distributed, and approximately 1.49 u00b1 0.16 wt% and 21.69 u00b1 2.74 wt% respectively. More importantly, Zn-containing nanorod-like particles and the morphology could work together, slightly decreasing adhesion of S. aureus but increasing the proportion of dead cells, thus inhibiting subsequent biofilm formation, compared with the controlled group. In addition to this, MNT-Sr/Zn could enhance the osteogenic differentiation via the upregulation of the transcription of osteogenic related genes in vitro. ConclusionsThis research provides a new surface modification method on titanium substrate for multi-functional implant material development. Due to the co-doping of Sr and Zn in the coating, biomechanical stability, antibacterial capability and early osteogenic inductive effect are enhanced, which has the potential to be applied in dental implantation in the future.References[1] Hickok, N. J. , Shapiro, I. M. , Chen, A. F. (2018). The impact of incorporating antimicrobials into implant surfaces. Journal of Dental Research, 002203451773176.[2] Chouirfa, H., Bouloussa, H., Migonney, V., Falentin-Daudre, C (2019). Review of titanium surface modification techniques and coatings for antibacterial applications. Acta biomaterialia 83:37-54[3] Jaggessar, A., Shahali, H., Mathew, A., Yarlagadda, P. K. D. V. (2017). Bio-mimicking nano- and micro-structured surface fabrication for antibacterial properties in medical implants. Journal of Nanobiotechnology, 15(1), 64.[4] Edward Ou2019Neill, Awale, G., Daneshmandi, L., Umerah, O., & Lo, W. H. (2018). The roles of ions on bone regeneration. Drug Discovery Today.