High Resolution Capacitance Dilatometer for Use with Small Organic Crystals

1971 ◽  
Vol 42 (1) ◽  
pp. 155-156 ◽  
Author(s):  
Donald A. Miller ◽  
J. W. Kauffman ◽  
C. R. Kannewurf ◽  
R. A. Arndt
Keyword(s):  
High Resolution ◽  
Organic Crystals ◽  
Capacitance Dilatometer

High Resolution ADF-STEM Imaging Application for Organic Crystals

2008 ◽  
Vol 492 (1) ◽  
pp. 200/[564]-209/[573] ◽  
Author(s):  
Mitsutaka Haruta ◽  
Kaname Yoshida ◽  
Hiroki Kurata ◽  
Seiji Isoda
Keyword(s):  
High Resolution ◽  
Organic Crystals ◽  
Imaging Application

scholarly journals Double-Coating Of Three-Dimensional SEM Specimens

2001 ◽  
Vol 9 (2) ◽  
pp. 29-29
Author(s):  
Chris Jeffree
Keyword(s):  
High Resolution ◽  
Three Dimensional ◽  
Pollen Grains ◽  
Organic Crystals ◽  
Starch Grains ◽  
High Resolution Images ◽  
Satisfactory Analysis ◽  
Image Artefacts ◽  
Double Coating ◽  
Inorganic And Organic

Many of the SEM specimens which we are asked to deal with are highly three-dimensional non-conductive objects, such as silica beads, pollen grains and spores, small inorganic and organic crystals such as zeolites and drug preparations, starch grains, etc. These often cause severe charging problems which result in all of the familiar and tiresome charge-related image artefacts, such as flare, excessive contrast, specimen movement, and variable scan lines. Charging can also make it very difficult to obtain high-resolution images or do satisfactory analysis.

Observations of the spatial structure of interstellar hydrogen

1967 ◽  
Vol 31 ◽  
pp. 45-46
Author(s):  
Carl Heiles
Keyword(s):  
High Resolution ◽  
Spatial Structure ◽  
Velocity Dispersion ◽  
Temperature Variations

High-resolution 21-cm line observations in a region aroundlII= 120°,b11= +15°, have revealed four types of structure in the interstellar hydrogen: a smooth background, large sheets of density 2 atoms cm-3, clouds occurring mostly in groups, and ‘Cloudlets’ of a few solar masses and a few parsecs in size; the velocity dispersion in the Cloudlets is only 1 km/sec. Strong temperature variations in the gas are in evidence.

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