A preparation technique for examination of wet-spun polymer fibers in a scanning electron microscope

1975 ◽  
Vol 253 (7) ◽  
pp. 521-526 ◽  
Author(s):  
D. M. Koenhen ◽  
M. A. de Jongh ◽  
C. A. Smolders ◽  
N. Yücesoy
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Polymer Fibers ◽  
Preparation Technique ◽  
Scanning Electron

A Mechanical Evaluation of Implants Placed With Different Surgical Techniques Into the Trabecular Bone of Goats

2007 ◽  
Vol 33 (2) ◽  
pp. 51-58 ◽  
Author(s):  
Manal M. Shalabi ◽  
Johannes G. C. Wolke ◽  
Anja J. E. de Ruijter ◽  
John A. Jansen
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Statistical Significance ◽  
Surgical Techniques ◽  
Preparation Technique ◽  
Machined Surface ◽  
Implant Surface ◽  
Experimental Conditions ◽  
Removal Torque ◽  
Scanning Electron

Abstract The aim of the study was to assess the effects of surgical technique and implant surface roughness on implant fixation. A total of 48 screw implants with machined or etched surface topographies were placed into the femoral condyles of goats. The implant sites were prepared by a conventional technique, by undersized preparation, or by the osteotome technique. Bone tissue responses were evaluated after 12 weeks of healing by removal torque testing and histologic analysis using scanning electron microscope. The cumulative removal torque value of the etched implants placed with the undersized technique (98 ± 29 Ncm) was higher (50 ± 35 Ncm) to a level of statistical significance than machined surface implants placed by the osteotome technique. Scanning electron microscope evaluation indicated that all implants showed interfacial bone contact. The torque test resulted in fracture at the bone-implant interface for all experimental conditions. Installation of etched implants using an undersized preparation of the implant bed resulted in superior bonding strength with the surrounding bone at 12 weeks after surgery. Evidently, the undersized preparation technique improved the early fixation of oral implants in this study.

Enzymatic digestion of seeds as a preparation technique for Scanning Electron Microscopy

1992 ◽  
Vol 50 (1) ◽  
pp. 750-751
Author(s):  
Randy Scott ◽  
W. R. Ocumpaugh
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Enzymatic Digestion ◽  
Preparation Technique ◽  
Grass Seed ◽  
Work In Progress ◽  
Area Of Interest ◽  
Scanning Electron

The study of the microstructure of seed is an area of interest. Work in progress was confused by the difficulty in determining what part of the monocot seed was embryo and what part was endosperm. Routine histological facilities were not available and the imaging of the scanning electron microscope was desired.The image seen on the left was prepared by simply cutting, mounting and coating the seed. This micrograph presents a puzzle to those of us who are not very familiar with the structure of seeds. Note, some organization is in evidence in the long section down the middle of a grass seed. With imagination, it might be thought that the embryonic leaflets can be seen. The rootlet and other structure presents a confusing display.

Bevel Etching: A Low Cost Alternative to FIB

2007 ◽  
Author(s):  
B. Seidl ◽  
J. Walter ◽  
M. Kirchberger
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Failure Analysis ◽  
Electronic Packaging ◽  
Low Cost ◽  
Ion Beam ◽  
Preparation Technique ◽  
Industrial Manufacturing ◽  
Cost Efficient ◽  
Scanning Electron

Abstract Microstructural diagnostic for electronic packaging development and failure analysis under industrial manufacturing conditions require fast but reliable preparation routines. The aim of the presented poster is to introduce a time and cost efficient preparation technique for FESEM (field emission scanning electron microscope) investigations with focus on typical issues in electronic packaging development and failure analysis. The new ion beam based technique acts as a low cost alternative to FIB, able to prepare much wider section areas, combined in a tool, which can also be used for standard ion beam polishing processes.

scholarly journals Optimization of scanning electron microscope technique for amniotic membrane investigation: A preliminary study

2018 ◽  
Vol 12 (04) ◽  
pp. 574-578
Author(s):  
Saaid Al Shehadat ◽  
Mehmet Omer Gorduysus ◽  
Suzina Sheikh Abdul Hamid ◽  
Nurul Asma Abdullah ◽  
Abdul Rani Samsudin ◽  
...  
Keyword(s):  
Stem Cells ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Amniotic Membrane ◽  
Human Amniotic Membrane ◽  
Preparation Technique ◽  
Sem Images ◽  
Preliminary Study ◽  
Intact Surface ◽  
Scanning Electron

ABSTRACTObjective: The objective of this study was to evaluate and compare the two scanning electron microscope (SEM) preparation protocols and determine the better SEM preparation technique to study stem cells on human amniotic membrane (hAM) scaffold. Materials and Methods: Formaldehyde-based protocol and glutaraldehyde-based protocol were compared to evaluate the quality of SEM images for stem cells cultured on hAM scaffold. Results: The results suggested that formaldehyde-based protocol is better than glutaraldehyde-based protocol in terms of showing clearer topography of the membrane as well as the boarders of the cells. To provide intact surface of the SEM sample and avoid possible ruptures of the hAM or the thin cell layer, it is recommended to perform the dehydration step using graded alcohol concentrations of 20%, 30%, 40%, 50%, 60%, 70%, 80%, and 90%, one time for each and twice in 100% for 10 min each. Gold sputter-coating step is not recommended as it does not improve the image quality. Conclusions: To obtain clear SEM images, it is recommended to run a preliminary study to determine the better chemicals and conditions of sample preparation even when following preexisting protocols.

scholarly journals Specimen Preparation for Condoms

2007 ◽  
Vol 15 (5) ◽  
pp. 40-41 ◽  
Author(s):  
Gan Phay Fang
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Polymer Material ◽  
Specimen Preparation ◽  
Preparation Technique ◽  
Sem Imaging ◽  
Preparation Techniques ◽  
Scanning Electron

Specimen preparation techniques for Scanning Electron Microscope (SEM) imaging of condoms as reported by Rosenzweig et al revealed a variety of artifacts. The artifacts were classified as ridging, cracking and melting. The purpose of this article is to introduce a simple specimen preparation technique for condoms to be evaluated via SEM without any surface artifacts. This technique involves the use of two chrome washers to sandwich the condom. The sandwiched condom specimen is then subjected to coating before mounting on an aluminium stub. The execution of this technique requires patience and practice so as not to damage the condom. The method may be applied to any similar polymer material.

The Alteration of the Pore Spaces in Sandstones

1973 ◽  
Vol 31 ◽  
pp. 210-211
Author(s):  
R. E. Ferrell ◽  
G. G. Paulson
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
The Other ◽  
Coarse Grained ◽  
Depositional Fabric ◽  
Soluble Components ◽  
Scanning Electron ◽  
Shape And Size

The pore spaces in sandstones are the result of the original depositional fabric and the degree of post-depositional alteration that the rock has experienced. The largest pore volumes are present in coarse-grained, well-sorted materials with high sphericity. The chief mechanisms which alter the shape and size of the pores are precipitation of cementing agents and the dissolution of soluble components. Each process may operate alone or in combination with the other, or there may be several generations of cementation and solution.The scanning electron microscope has ‘been used in this study to reveal the morphology of the pore spaces in a variety of moderate porosity, orthoquartzites.

The Broad Applications of the Scanning Electron Microscope

1969 ◽  
Vol 27 ◽  
pp. 20-21
Author(s):  
C. T. Nightingale ◽  
S. E. Summers ◽  
T. P. Turnbull
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Light Microscopy ◽  
Surface Topography ◽  
Great Depth ◽  
Resolving Power ◽  
Depth Of Field ◽  
Pictorial Representations ◽  
Scanning Electron

The ease of operation of the scanning electron microscope has insured its wide application in medicine and industry. The micrographs are pictorial representations of surface topography obtained directly from the specimen. The need to replicate is eliminated. The great depth of field and the high resolving power provide far more information than light microscopy.

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