|
XL30 ESEM-FEG Images
You can click on any image to enlarge it.
All magnifications are given as original magnificatins
(for pictures 4"x5")
Wet Mode
Resolution in Wet Mode is practically the same as in high vacuum
mode
100,000x. Vaporized gold. Chamber
pressure 3.4 Torr.
|
Wet samples
350x. Alfalfa. The cells were alive in the microscope.
|
6500x. Dentin. On the top is a very wet layer of proteins.
|
Non-conductive samples
5000x. Paper.
|
1500x. Cotton fabric
|
Dissolution and Crystallization of Table Salt (NaCl)
| With the cooling Peltier stage, water vapor pressure in the specimen
chamber can reach the dew point (100% humidity) and water will condense
on the stage. Salt crystals were placed on the stage at +5°C. Pressure
in the chamber was gradually increased and crystals were dissolved in condensed
water (first four pictures below ) until there was nothing left but water
solution of NaCl (picture in the center). Pressure then was decreased,
and salt crystallized (last four pictures). 250x. |
EDS analysis works fine in wet mode:
Sample: paper, not coated, non-conductive
Maps for Ti, Al, and Si
|
High Vacuum Mode
100,000x. Collagen
in
dentin. Au/Pd coated |
200,000x. Mineralized
dentin. Au/Pd coated |
25,000x. Perlit colony
in a steel |
2000x. Corrosion
products |
12,000x. Steel fracture.
Corrosion fatigue
|
5000x. Dentin
Courtesy of
Mr. James Swafford |
Low Voltage Mode (High Vacuum)
2500x. 500V.
Paper. |
100x. 300V.
Cotton fabric. |
View of the specimen
chamber from the inside.
CCD camera. |
Research in progress...
|
|
|
