A jet etching preparation technique for the transmission electron microscope examination of surface layers on silicon

1966 ◽  
Vol 43 (8) ◽  
pp. 609-611 ◽  
Author(s):  
D J Keast ◽  
A D Wilson
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Preparation Technique ◽  
Surface Layers ◽  
Microscope Examination ◽  
Transmission Electron Microscope Examination ◽  
Electron Microscope Examination ◽  
Transmission Electron

A TRANSMISSION ELECTRON MICROSCOPE EXAMINATION OF HEMIPTERAN AND LEPIDOPTERAN GONIAL CENTROMERES

1974 ◽  
Vol 16 (2) ◽  
pp. 457-464 ◽  
Author(s):  
George Gassner ◽  
Donna J. Klemetson
Keyword(s):  
Electron Microscope ◽  
Nuclear Envelope ◽  
Transmission Electron Microscope ◽  
Trichoplusia Ni ◽  
Radiation Sterilization ◽  
Transmission Electron Micrograph ◽  
Electron Micrograph ◽  
Microscope Examination ◽  
Electron Microscope Examination ◽  
Transmission Electron

A transmission electron micrograph study indicates that the material identified as the centromere in gonial mitotic cells is more localized in the lepidopterans, Ephestia kuehniella (Zeller) and Trichoplusia ni (Hübner), than in the hemipteran, Oncopeutus fasciatus (Dallas). The lepidopteran centromeres are similar in size to the centromeres found in several monokinetic species. In O. fasciatus the mitotic nuclear envelope disappears while the E. kuehniella and T. ni nuclear envelopes persist during division. Factors other than the extent of the centromere material may be involved in making the Lepidoptera more resistant to radiation sterilization than the Hemiptera.

scholarly journals Rapid Cross-Section TEM Specimen Preparation of III-V Materials

2003 ◽  
Vol 11 (1) ◽  
pp. 29-32 ◽  
Author(s):  
R. Beanland
Keyword(s):  
Electron Microscope ◽  
Cross Section ◽  
Transmission Electron Microscope ◽  
Limited Resources ◽  
Specimen Preparation ◽  
Preparation Technique ◽  
Sample Type ◽  
Transmission Electron ◽  
Conventional Methods ◽  
The Cross

AbstractCross-section transmission electron microscope (TEM) specimen preparation of Ill-V materials using conventional methods can be a painful and time-consuming activity, with a day or more from receipt of a sample to examination in the TEM being the norm. This article describes the cross-section TEM specimen preparation technique used at Bookham Caswell. The usual time from start to finish is <1 hour. Up to 10 samples can be prepared at once, depending upon sample type. Most of the tools used are widely available and inexpensive, making the technique ideal for use in institutions with limited resources.

Relation between internal boundaries and critical current in textured YBa2Cu3O7−δ: Transmission electron microscope observations

1998 ◽  
Vol 13 (10) ◽  
pp. 2800-2806 ◽  
Author(s):  
A. Khalfi ◽  
G. Trolliard ◽  
B. Soulestin ◽  
D. S. Smith ◽  
J. P. Bonnet ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Critical Current ◽  
Strong Coupling ◽  
Transmission Electron Microscope ◽  
Melting Zone ◽  
Optical Microscope ◽  
Microscope Examination ◽  
Transmission Electron ◽  
Superconducting Current ◽  
Misorientation Angles

The local critical current (Ic) at 77 K measured at the mm scale in a 60 mm long sample of YBa2Cu3O7−δ prepared by a melting zone process is correlated to the microstructure. Lower values of Ic (<20 A) were obtained in a part of the sample which optical microscope examination showed to be generally polycrystalline. In contrast, the rest of the sample, consisting mostly of large textured domains, gave values for Ic of 120 A and above. Transmission electron microscope observations revealed that the textured domains contain internal boundaries. Depending on the scale of observation, the misorientation angles across the boundaries could vary from a few tenths of a degree up to a few degrees. This seems characteristic for boundaries in textured material which allow strong coupling of the superconducting current across themselves.

Preparation of Cross-Sectional TEM Samples of Fe-Zn Couples

1991 ◽  
Vol 254 ◽  
Author(s):  
L. A. Giannuzzi ◽  
P. R. Howell ◽  
H. W. Pickering ◽  
W. R. Bidter
Keyword(s):  
Electron Microscope ◽  
Liquid Nitrogen ◽  
Cross Section ◽  
Transmission Electron Microscope ◽  
Preparation Technique ◽  
Ion Milling ◽  
Tem Analysis ◽  
Cross Sectional ◽  
Cold Stage ◽  
Transmission Electron

AbstractA preparation technique for the production of cross-sectional transmission electron microscope (TEM) samples from the interdiffusion regions of Fe-Zn binary couples is described. To alleviate the problem of unequal ion milling rates between the Fe and Zn, a 0.75mm thick Fe sheet has been double plated with a thick electrodeposited Zn coating to achieve a total couple thickness of ˜3mm. After slicing the couple in cross-section, the Fe region of the sample is dimpled to perforation near the Fe-Zn interface. Final thinning for TEM analysis is obtained by ion milling using a liquid nitrogen cold stage and sector speed control. The ion milling procedure is stopped when the perforated hole in the Fe-side of the couple extends through the faster eroding Zn-side of the interface. This technique, in modified form, is expected to be suitable for commercial steels coated with Zn-based alloys.

Anatomy and Ultrastructure of Pith Fleck-Like Tissues in Some Rosaceae Tree Species

IAWA Journal ◽  
1994 ◽  
Vol 15 (1) ◽  
pp. 65-73 ◽  
Author(s):  
Danny Rioux
Keyword(s):  
Aqueous Solution ◽  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Tree Species ◽  
Tissue Formation ◽  
Microscope Examination ◽  
Transmission Electron ◽  
Cambial Zone ◽  
Histochemical Tests ◽  
Anatomy And Ultrastructure

Unusual xylem tissues were found in Amelanchier laevis, Prunus pensylvanica, P. virginiana, Sorbus americana and S. aucuparia. These zones of abnormal xylem were composed of hypertrophied cells and bands that apparently comprised collapsed cells. The hypertrophied cells appeared to occupy gaps that began to form in the cambial zone. Histochemical tests indicated that the bands were highly lignified and impermeable to an aqueous solution of KMnO4, as revealed by fluorescence. Transmission electron microscope examination disclosed clearly that the bands were composed of collapsed cells and showed that the hypertrophied cells had thicker walls which contained, at times, additional layers. Although the cause of this tissue formation is unknown, its anatomy is quite similar to pith fleck tissues reported by others as being caused by cambium mining insects.

A Reproducible Selective Stain for Cardiac Sarcoplasmic Reticulum

1974 ◽  
Vol 32 ◽  
pp. 214-215
Author(s):  
R. A. Waugh ◽  
J. R. Sommer
Keyword(s):  
Complex System ◽  
Electron Microscope ◽  
Sarcoplasmic Reticulum ◽  
Transmission Electron Microscope ◽  
Electron Microscopic ◽  
Cardiac Sarcoplasmic Reticulum ◽  
Transmission Electron

Cardiac sarcoplasmic reticulum (SR) is a complex system of intracellular tubules that, due to their small size and juxtaposition to such electron-dense structures as mitochondria and myofibrils, are often inconspicuous in conventionally prepared electron microscopic material. This study reports a method with which the SR is selectively “stained” which facilitates visualizationwith the transmission electron microscope.

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