scholarly journals Electrophoretic Deposition of Carbon Nanotubes over TiO2Nanotubes: Evaluation of Surface Properties and Biocompatibility

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Jung Eun Park ◽  
Il Song Park ◽  
Tae Sung Bae ◽  
Min Ho Lee
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Corrosion Resistance ◽  
Surface Modification ◽  
Electrophoretic Deposition ◽  
Biomedical Applications ◽  
Controlled Drug Delivery ◽  
Chemical Durability ◽  
Surface Modified ◽  
Excellent Chemical

Titanium (Ti) is often used as an orthopedic and dental implant material due to its better mechanical properties, corrosion resistance, and excellent biocompatibility. Formation of TiO2nanotubes (TiO2NTs) on titanium is an interesting surface modification to achieve controlled drug delivery and to promote cell growth. Carbon nanotubes (CNTs) possess excellent chemical durability and mechanical strength. The use of CNTs in biomedical applications such as scaffolds has received considerable attention in recent years. The present study aims to modify the surface of titanium by anodizing to form TiO2NTs and subsequently deposit CNTs over it by electrophoretic deposition (EPD). Characteristic, biocompatibility, and apatite forming ability of the surface modified samples were evaluated. The results of the study reveal that CNTs coating on TiO2nanotubes help improve the biological activity and this type of surface modification is highly suitable for biomedical applications.

scholarly journals Surface Modification of Bacterial Cellulose for Biomedical Applications

2022 ◽  
Vol 23 (2) ◽  
pp. 610
Author(s):  
Teresa Aditya ◽  
Jean Paul Allain ◽  
Camilo Jaramillo ◽  
Andrea Mesa Restrepo
Keyword(s):  
Mechanical Properties ◽  
Drug Delivery ◽  
Tissue Engineering ◽  
Surface Modification ◽  
Bacterial Cellulose ◽  
Biomedical Applications ◽  
Human Tissues ◽  
Naturally Occurring ◽  
Microstructure And Mechanical Properties

Bacterial cellulose is a naturally occurring polysaccharide with numerous biomedical applications that range from drug delivery platforms to tissue engineering strategies. BC possesses remarkable biocompatibility, microstructure, and mechanical properties that resemble native human tissues, making it suitable for the replacement of damaged or injured tissues. In this review, we will discuss the structure and mechanical properties of the BC and summarize the techniques used to characterize these properties. We will also discuss the functionalization of BC to yield nanocomposites and the surface modification of BC by plasma and irradiation-based methods to fabricate materials with improved functionalities such as bactericidal capabilities.

Functional Nanodiamond Internalization Mechanisms and Kinetics

2010 ◽  
Author(s):  
Robert Lam ◽  
Xueqing Zhang ◽  
Mark Chen ◽  
Dean Ho
Keyword(s):  
Carbon Nanotubes ◽  
Drug Delivery ◽  
Surface Modification ◽  
Aspect Ratio ◽  
Biomedical Applications ◽  
Internalization Mechanism ◽  
Mechanism And Kinetics ◽  
Energy Dependent ◽  
The Relationship ◽  
Kinetics Of

Several reports have described the relationship between size, aspect ratio, surface modification and internalization for a variety of nanoparticles (i.e. gold, polymer, carbon nanotubes). Nanodiamonds (NDs) in particular have recently been implicated in a variety of biomedical applications. One of the most promising is in utilizing NDs as drug delivery carriers where successful internalization is of utmost importance. A few reports recently have demonstrated the energy dependent internalization of bare NDs. In this report, we investigate the internalization mechanism and kinetics of functional ND-conjugate translocation.

scholarly journals Surface Modification of Biomedical Titanium Alloy: Micromorphology, Microstructure Evolution and Biomedical Applications

Coatings ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 249 ◽  
Author(s):  
Wei Liu ◽  
Shifeng Liu ◽  
Liqiang Wang
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloy ◽  
Surface Modification ◽  
Microstructure Evolution ◽  
Biomedical Applications ◽  
Cellular Level ◽  
Implant Surface ◽  
Potential Applications ◽  
Biomedical Titanium Alloy ◽  
Increasing Demand

With the increasing demand for bone implant therapy, titanium alloy has been widely used in the biomedical field. However, various potential applications of titanium alloy implants are easily hampered by their biological inertia. In fact, the interaction of the implant with tissue is critical to the success of the implant. Thus, the implant surface is modified before implantation frequently, which can not only improve the mechanical properties of the implant, but also polish up bioactivity and osseoconductivity on a cellular level. This paper aims at reviewing titanium surface modification techniques for biomedical applications. Additionally, several other significant aspects are described in detail in this article, for example, micromorphology, microstructure evolution that determines mechanical properties, as well as a number of issues concerning about practical application of biomedical implants.

scholarly journals Carbon Nanotubes Reinforced Composites for Biomedical Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
Wei Wang ◽  
Yuhe Zhu ◽  
Susan Liao ◽  
Jiajia Li
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Biomedical Applications ◽  
Polymer Matrix Composites ◽  
Ceramic Matrix Composites ◽  
Matrix Composites ◽  
Reinforced Composites ◽  
Reinforced Polymer

This review paper reported carbon nanotubes reinforced composites for biomedical applications. Several studies have found enhancement in the mechanical properties of CNTs-based reinforced composites by the addition of CNTs. CNTs reinforced composites have been intensively investigated for many aspects of life, especially being made for biomedical applications. The review introduced fabrication of CNTs reinforced composites (CNTs reinforced metal matrix composites, CNTs reinforced polymer matrix composites, and CNTs reinforced ceramic matrix composites), their mechanical properties, cell experimentsin vitro, and biocompatibility testsin vivo.

In Situ Growth of Carbon Nanotubes in Hydroxyapatite Matrix by Chemical Vapor Deposition

2009 ◽  
Vol 79-82 ◽  
pp. 1671-1674 ◽  
Author(s):  
Xiao Ying Lu ◽  
Hao Wang ◽  
Sheng Yi Xia ◽  
Jian Xin Wang ◽  
Jie Weng
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Biomedical Applications ◽  
Chemical Vapor ◽  
Novel Method ◽  
Biomedical Fields ◽  
Walled Cnts

Carbon nanotubes (CNTs)/hydroxyapatite (HA) nanocomposites have been successfully fabricated by a novel method for the biomedical applications, which is in situ growing CNTs in HA matrix in a chemical vapor deposition (CVD) system. The results show that it is feasible to in situ grow CNTs in HA matrix by CVD for the fabrication of CNTs/HA nanocomposites. Multi-walled CNTs with 50-80 nm in diameter have been grown in situ from HA matrix with the pretreatment of sintering at 1473K in air. The nanocomposites are composed with carbon crystals in CNTs form, HA crystallites and calcium phosphate crystallites, one of most important CaP bioceramics. And the CNTs content is about 1% proportion by weight among the composites in our experiments, which can enhance the HA mechanical properties and the CNTs content does not affect the HA performances. These CNTs/HA nanocomposites have the potential application in the biomedical fields.

Synthetic control over the structure and symmetry of carbon nanotubes: Towards biomedical applications

2011 ◽  
Vol 1297 ◽  
Author(s):  
Michael S. Lowry ◽  
Alfredo Rayms-Keller ◽  
Karen J. Long ◽  
Francisco Santiago ◽  
Victor H. Gehman ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Electron Microscope ◽  
Vapor Deposition ◽  
Biomedical Applications ◽  
Chemical Vapor ◽  
Synthetic Control ◽  
Growth Site ◽  
Unique Chemical ◽  
Scanning Electron

ABSTRACTCarbon nanotubes (CNTs) are appealing materials for biomedical applications due to their unique chemical, electrical and mechanical properties. The emphasis of the present work is on controlling the structure and symmetry of carbon nanotubes by imposing an applied stress at the CNT growth site. CNTs were grown under these conditions using standard chemical vapor deposition (CVD) techniques and were subsequently characterized with a scanning electron microscope; the methodology and implications of this approach are discussed herein.

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