Fabrication of divalent ion substituted hydroxyapatite/gelatin nanocomposite coating on electron beam treated titanium: mechanical, anticorrosive, antibacterial and bioactive evaluations

RSC Advances ◽  
2015 ◽  
Vol 5 (59) ◽  
pp. 47341-47352 ◽  
Author(s):  
A. Karthika ◽  
L. Kavitha ◽  
M. Surendiran ◽  
S. Kannan ◽  
D. Gopi
Keyword(s):  
Electron Beam ◽  
Cell Growth ◽  
Nanocomposite Coating ◽  
Implant Material ◽  
Orthopedic Applications

The strontium, magnesium and zinc substituted hydroxyapatite/gelatin (M-HAP/Gel) nanocomposite coating on electron beam treated titanium will definitely be an effective implant material for better cell growth in orthopedic applications.

Surface structure, nanocrystallite and defects in (ZrTi)CN nanocomposite irradiated by electron beam

2021 ◽  
pp. 2150111
Author(s):  
M. Yu. Tashmetov ◽  
I. I. Yuldashova ◽  
N. B. Ismatov
Keyword(s):  
Electron Beam ◽  
Surface Structure ◽  
Electron Beam Irradiation ◽  
Rietveld Method ◽  
Nanocomposite Coating ◽  
Beam Irradiation ◽  
X Ray ◽  
Nanocrystallite Size ◽  
Atomic Force ◽  
Cubic Structure

Effect of 2 MeV electron beam at the current density 0.09 nA/cm2 on surface structure, nanocrystallite size of (ZrTi)CN nanocomposite coating on steel was investigated at Scanning Electron and Atomic Force microscopes, and also X-ray diffractometer. Using the Rietveld method, two structure phases were indentified in the pristine samples: (ZrTi)(CN)-cubic (space group Fm-3m) and TiC — trigonal (sp.gr.R-3m). Electron beam irradiation to the fluency of [Formula: see text] electron/cm2 resulted in the phase transition of TiC from trigonal (sp.gr.R-3m) to cubic structure (sp.gr.Fm-3m). Besides, nanocrystallite size and shape have changed after the fluency [Formula: see text] electron/cm2. The lattice parameters have increased up to [Formula: see text] electron/cm2 fluence and the nanorcrystallite size of nanocomposite was enlarged 26%, which was attributed to generation of defects.

scholarly journals Directing neuronal cell growth on implant material surfaces by microstructuring

2012 ◽  
Vol 100B (4) ◽  
pp. 940-947 ◽  
Author(s):  
Uta Reich ◽  
Elena Fadeeva ◽  
Athanasia Warnecke ◽  
Gerrit Paasche ◽  
Peter Müller ◽  
...  
Keyword(s):  
Cell Growth ◽  
Neuronal Cell ◽  
Material Surfaces ◽  
Implant Material

Electron beam melted scaffolds for orthopedic applications

2017 ◽  
Vol 17 ◽  
pp. 169-175 ◽  
Author(s):  
Ibrahim Eldesouky ◽  
Ola Harrysson ◽  
Harvey West ◽  
Hassan Elhofy
Keyword(s):  
Electron Beam ◽  
Orthopedic Applications

scholarly journals Nanocomposite coating of albumin/Li-containing bioactive glass nanospheres promotes osteogenic activity of PEEK

2021 ◽  
Vol 32 (9) ◽  
Author(s):  
Xubin Qiu ◽  
Ming Zhuang ◽  
Xiaofeng Yuan ◽  
Zhiwei Liu ◽  
Wenjian Wu
Keyword(s):  
Bioactive Glass ◽  
Orthopedic Implants ◽  
Dip Coating ◽  
Nanocomposite Coating ◽  
Nanocomposite Coatings ◽  
Bone Mesenchymal Stem Cells ◽  
Coating Method ◽  
Dip Coating Method ◽  
Xrd Techniques ◽  
Orthopedic Applications

AbstractPolyetheretherketone (PEEK) is an important material applied in orthopedic applications, as it posses favorable properties for orthopedic implants, e.g., radiolucency and suitable elastic modulus. However, PEEK exhibits insufficient osteogenesis and osteointegration that limits its clinical applications. In this study, we aimed to enhance the osteogenisis of PEEK by using a surface coating approach. Nanocomposite coating composed of albumin/lithium containing bioactive glass nanospheres was fabricated on PEEK through dip-coating method. The presence of nanocomposite coating on PEEK was confirmed by SEM, FTIR, and XRD techniques. Nanocomposite coatings significantly enhanced hydrophilicity and roughness of PEEK. The nanocomposite coatings also enhanced adhesion, proliferation, and osteogenic differentiation of bone mesenchymal stem cells due to the presence of bioactive glass nanospheres and the BSA substrate film. The results indicate the great potential of the nanocomposite coating in enhancing osteogenesis and osteointegration of PEEK implants.

Electron Microscopic Study of the Epithelium of the Seminal Vesicle of Aging Rats

1974 ◽  
Vol 32 ◽  
pp. 138-139
Author(s):  
V. F. Allison ◽  
G. C. Fink ◽  
G. W. Cearley
Keyword(s):  
Cell Growth ◽  
Epithelial Cell ◽  
Epithelial Cells ◽  
Seminal Vesicle ◽  
Seminal Vesicles ◽  
Epithelial Layer ◽  
Epithelial Hyperplasia ◽  
Electron Microscopic ◽  
Aging Rats ◽  
Pseudostratified Epithelium

It is well known that epithelial hyperplasia (benign hypertrophy) is common in the aging prostate of dogs and man. In contrast, little evidence is available for abnormal epithelial cell growth in seminal vesicles of aging animals. Recently, enlarged seminal vesicles were reported in senescent mice, however, that enlargement resulted from increased storage of secretion in the lumen and occurred concomitant to epithelial hypoplasia in that species.The present study is concerned with electron microscopic observations of changes occurring in the pseudostratified epithelium of the seminal vescles of aging rats. Special attention is given to certain non-epithelial cells which have entered the epithelial layer.

Techniques for Transmission Electron Microscopy of Fiber-Matrix Interfaces in Aluminum Alloy-Boron Composites by Ion Erosio

1971 ◽  
Vol 29 ◽  
pp. 204-205
Author(s):  
G. G. Shaw
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Aluminum Alloy ◽  
Electron Beam ◽  
Pure Aluminum ◽  
Ion Milling ◽  
Transmission Electron ◽  
Fiber Matrix ◽  
Ion Erosion ◽  
Row Of Fibers

The morphology and composition of the fiber-matrix interface can best be studied by transmission electron microscopy and electron diffraction. For some composites satisfactory samples can be prepared by electropolishing. For others such as aluminum alloy-boron composites ion erosion is necessary.When one wishes to examine a specimen with the electron beam perpendicular to the fiber, preparation is as follows: A 1/8 in. disk is cut from the sample with a cylindrical tool by spark machining. Thin slices, 5 mils thick, containing one row of fibers, are then, spark-machined from the disk. After spark machining, the slice is carefully polished with diamond paste until the row of fibers is exposed on each side, as shown in Figure 1.In the case where examination is desired with the electron beam parallel to the fiber, preparation is as follows: Experimental composites are usually 50 mils or less in thickness so an auxiliary holder is necessary during ion milling and for easy transfer to the electron microscope. This holder is pure aluminum sheet, 3 mils thick.

Temperature Dependence of the Critical Electron Dose for Fatty Acid Monolayers

1982 ◽  
Vol 40 ◽  
pp. 78-79
Author(s):  
Kenneth H. Downing ◽  
Robert M. Glaeser
Keyword(s):  
Electron Beam ◽  
Fatty Acid ◽  
Inelastic Scattering ◽  
Temperature Dependence ◽  
Structural Damage ◽  
Direct Result ◽  
Second Step ◽  
Strong Temperature Dependence ◽  
Electron Dose ◽  
Covalent Bonds

The structural damage of molecules irradiated by electrons is generally considered to occur in two steps. The direct result of inelastic scattering events is the disruption of covalent bonds. Following changes in bond structure, movement of the constituent atoms produces permanent distortions of the molecules. Since at least the second step should show a strong temperature dependence, it was to be expected that cooling a specimen should extend its lifetime in the electron beam. This result has been found in a large number of experiments, but the degree to which cooling the specimen enhances its resistance to radiation damage has been found to vary widely with specimen types.

Sign in / Sign up

Export Citation Format

Share Document