LabAdviser/314/Microscopy 314-307/TEM/ETEM: Difference between revisions
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[[Category:314]] | [[Category:314]] | ||
[[Category:314-Microscopy]] | [[Category:314-Microscopy]] | ||
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= FEI Titan 80-300 ETEM = | = FEI Titan 80-300 ETEM = | ||
The Titan ETEM is a transmission electron microscopy equipped with a field emission electron source (FEI X-FEG), a monochromator and an aberration corrector on the super-twin (S-TWIN) objective lens (CEOS CESCOR). This gives the microscope a resolution of about 0.8 Å in TEM mode. Other tecniques available on the microscope are scanning transmission electron microscopy (STEM, resolution 1.4 Å) with both high-angle annular dark-field (HAADF) and dark-field (DF)/bright-field (BF) detectors. On the analytical side, the microscope is equipped with Oxford X-Max 80T SDD X-ray detector for energy dispersive X-ray (EDS) spectroscopy and Gatan Tridiem 866 imaging filter allowing for electron energy-loss spectroscopy (EELS) and energy-filtered imaging (EF-TEM). For imaging, the microscope is equipped with Gatan US1000 cameras (2048x2048 px) before and after the energy filter, as well as a [[LabAdviser/314/Microscopy 314-307/TEM/ETEM/OneView|Gatan OneView camera]] for fast ''in situ'' acquisition (25fps full resolution 4k x 4k, 100fps 2k x 2k, 200fps 1k x 1k, 300fps 512 x 512).<br /> | The Titan ETEM is a transmission electron microscopy equipped with a field emission electron source (FEI X-FEG), a monochromator and an aberration corrector on the super-twin (S-TWIN) objective lens (CEOS CESCOR), which has a pole piece gap of 5.4mm. This gives the microscope a resolution of about 0.8 Å in TEM mode. Other tecniques available on the microscope are scanning transmission electron microscopy (STEM, resolution 1.4 Å) with both high-angle annular dark-field (HAADF) and dark-field (DF)/bright-field (BF) detectors. On the analytical side, the microscope is equipped with Oxford X-Max 80T SDD X-ray detector for energy dispersive X-ray (EDS) spectroscopy and Gatan Tridiem 866 imaging filter allowing for electron energy-loss spectroscopy (EELS) and energy-filtered imaging (EF-TEM). For imaging, the microscope is equipped with Gatan US1000 cameras (2048x2048 px) before and after the energy filter, as well as a [[LabAdviser/314/Microscopy 314-307/TEM/ETEM/OneView|Gatan OneView camera]] for fast ''in situ'' acquisition (25fps full resolution 4k x 4k, 100fps 2k x 2k, 200fps 1k x 1k, 300fps 512 x 512).<br /> | ||
The microscope is equipped with a differential pumping system which allows gases to be introduced around the sample to a pressure on the order of 10 mbar (gas specie dependent). Several gases are permanently mounted on the system: Hydrogen, helium, methane carbon monoxide, nitrogen and oxygen. Additional gases and gas mixtures can be added as needed. Please contact Cen staff if you need other gases. [[image:Titan-etem-211113.jpg|400x400px|right|thumb|Schematic of the Titan ETEM differential pumping system.]]<br /> | The microscope is equipped with a differential pumping system which allows gases to be introduced around the sample to a pressure on the order of 10 mbar (gas specie dependent). Several gases are permanently mounted on the system: Hydrogen, helium, methane carbon monoxide, nitrogen and oxygen. Additional gases and gas mixtures can be added as needed. Please contact Cen staff if you need other gases. [[image:Titan-etem-211113.jpg|400x400px|right|thumb|Schematic of the Titan ETEM differential pumping system.]]<br /> | ||
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= Calibration = | = Calibration = | ||
*[[media:ETEM_collection-angles.xlsx |GIF collection angles (20220209)]] | |||
*Magnification calibration cameras | *Magnification calibration cameras | ||
*Convergence angles STEM | *Convergence angles STEM | ||
= Process information = | = Process information = | ||
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*[[LabAdviser/314/Microscopy 314-307/Technique/EELS|EELS]] | *[[LabAdviser/314/Microscopy 314-307/Technique/EELS|EELS]] | ||
*[[LabAdviser/314/Microscopy 314-307/Technique/EFTEM|EFTEM]] | *[[LabAdviser/314/Microscopy 314-307/Technique/EFTEM|EFTEM]] | ||
*[[LabAdviser/314/Microscopy 314-307/Technique/Holo|Holography]] | |||
Processes: | Processes: | ||
*Oxidation/Reduction of metal particles | *Oxidation/Reduction of metal particles | ||
<br /> | |||
= Tips and Tricks = | = Tips and Tricks = | ||
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*[[LabAdviser/314/Microscopy 314-307/TEM/Tips/MagicSwitch|Magic Switch is not working properly]] | *[[LabAdviser/314/Microscopy 314-307/TEM/Tips/MagicSwitch|Magic Switch is not working properly]] | ||
*[[LabAdviser/314/Microscopy 314-307/TEM/ETEM/OneView|Description OneView camera]] | *[[LabAdviser/314/Microscopy 314-307/TEM/ETEM/OneView|Description OneView camera]] | ||
*[[LabAdviser/314/Microscopy 314-307/TEM/ | *[[LabAdviser/314/Microscopy 314-307/TEM/Tips/Aztec|Aztec connection problems]] | ||
*[[LabAdviser/314/Microscopy 314-307/TEM/Tips/GIF-apertures|GIF apertures are not responding]] | *[[LabAdviser/314/Microscopy 314-307/TEM/Tips/GIF-apertures|GIF apertures are not responding]] | ||
*[[LabAdviser/314/Microscopy 314-307/TEM/Tips/HAADF-detector|HAADF detector doesn't give a signal]] | *[[LabAdviser/314/Microscopy 314-307/TEM/Tips/HAADF-detector|HAADF detector doesn't give a signal]] | ||