LabAdviser/314/Microscopy 314-307/TEM/ATEM: Difference between revisions
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= Titan ATEM = | = FEI Titan 80-300 ATEM = | ||
[[image:8212.JPG|400x267px|right|thumb|Titan ATEM in building 314.]]Titan Analytical can be used in two conditions, transmission (TEM) and scanning transmission (STEM) modes. The point (interpretable) resolutions for TEM and STEM at 300 kV are 0.2 and 0.08 nm, respectively, which allows atomic arrangements in materials to be visualized clearly. EDS and EELS equipped to the microscope can be used for elemental analysis from regions that are as small as 1 nm. Specially, monochromated EELS, which is reachable to an energy resolution of 0.15 eV, allows the distribution of surface plasmons in nanostructured materials to be imaged at the nanometer scale and makes possible to determine the valence state of elements (e.g., Fe2+/Fe3+ ratios). This microscope is also dedicated to magnetic and electrostatic potential imaging since it has a biprism located at a selected-area aperture position and a Lorentz lens. This capability not only offers us to characterize magnetic materials and semiconductor devices but also may make possible to visualize different chemical states in low-density materials such as polymers and biological specimens. <br /> | [[image:8212.JPG|400x267px|right|thumb|Titan ATEM in building 314.]] | ||
Titan Analytical can be used in two conditions, transmission (TEM) and scanning transmission (STEM) modes. The point (interpretable) resolutions for TEM and STEM at 300 kV are 0.2 and 0.08 nm, respectively, which allows atomic arrangements in materials to be visualized clearly. EDS and EELS equipped to the microscope can be used for elemental analysis from regions that are as small as 1 nm. Specially, monochromated EELS, which is reachable to an energy resolution of 0.15 eV, allows the distribution of surface plasmons in nanostructured materials to be imaged at the nanometer scale and makes possible to determine the valence state of elements (e.g., Fe2+/Fe3+ ratios). This microscope is also dedicated to magnetic and electrostatic potential imaging since it has a biprism located at a selected-area aperture position and a Lorentz lens. This capability not only offers us to characterize magnetic materials and semiconductor devices but also may make possible to visualize different chemical states in low-density materials such as polymers and biological specimens. <br /> | |||
= Sample holders = | = Sample holders = | ||
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David B. Williams, C. Barry Carter, Transmission Electron Microscopy - A Textbook for Materials Science (Springer, 2009). | David B. Williams, C. Barry Carter, Transmission Electron Microscopy - A Textbook for Materials Science (Springer, 2009). | ||
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Revision as of 12:24, 17 March 2020
FEI Titan 80-300 ATEM
Titan Analytical can be used in two conditions, transmission (TEM) and scanning transmission (STEM) modes. The point (interpretable) resolutions for TEM and STEM at 300 kV are 0.2 and 0.08 nm, respectively, which allows atomic arrangements in materials to be visualized clearly. EDS and EELS equipped to the microscope can be used for elemental analysis from regions that are as small as 1 nm. Specially, monochromated EELS, which is reachable to an energy resolution of 0.15 eV, allows the distribution of surface plasmons in nanostructured materials to be imaged at the nanometer scale and makes possible to determine the valence state of elements (e.g., Fe2+/Fe3+ ratios). This microscope is also dedicated to magnetic and electrostatic potential imaging since it has a biprism located at a selected-area aperture position and a Lorentz lens. This capability not only offers us to characterize magnetic materials and semiconductor devices but also may make possible to visualize different chemical states in low-density materials such as polymers and biological specimens.
Sample holders
The default specimen holders are a Fischione single-tilt tomography holder and an FEI double-tilt holder, which should be in the pumping station. The lab has also other specimen holders used for various application e.g. heating (furnace and MEMS-based), cooling, biasing and tomography. For information on the various specimen holders see HERE
Who may operate the Titan ATEM
In order to start training on the Titan ATEM you must by fully trained in the Tecnai TEM. Most of the basic operation on the Titan ATEM is the same as on the Tecnai with the added complexity of the aberration corrector and the monochromator.
Contact information can be found in LabManager
Calibration
Calibration_collection angle_3Feb10
Comparison between TEMs at DTU Nanolab - building 307/314
| Microscope | |||||
|---|---|---|---|---|---|
| Purpose |
|
|
|
| |
| Resolution | TEM mode |
>3.5 Å |
1.44 Å |
1.02 Å |
0.9 Å |
| STEM mode |
no STEM |
about 10 Å |
0.8 Å |
1.36 Å | |
| Spectroscopy | EDX |
Oxford X-Max 80T/AZtec |
Oxford X-Max 80T/AZtec |
Oxford X-Max 100TLE/AZtec |
Oxford X-Max 80T/AZtec |
| EELS |
no EELS |
Gatan 863 Tridiem GIF |
Gatan 865 Tridiem GIF |
Gatan 866 Tridiem GIF | |
Reference material
L. Reimer, Transmission Electron Microscopy - Physics of image formation and microanalysis (Springer, 1997).
David B. Williams, C. Barry Carter, Transmission Electron Microscopy - A Textbook for Materials Science (Springer, 2009).
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