LabAdviser/314/Microscopy 314-307/SEM/QFEG: Difference between revisions
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=QFEG 200 Cryo ESEM (FEI Quanta FEG 200)= | =QFEG 200 Cryo ESEM (FEI Quanta FEG 200)= | ||
[[ | [[File:202231020_IMG_4763.jpg|400px|right|thumb| DTU Nanolab QFEG located in building 307 room 907]] | ||
The QFEG 200 Cryo is an FEI Quanta FEG (Field Emission Gun) scanning electron microscope with a spatial resolution of 2 nm for the ETD detector in high vacuum at 30 keV. The microscope can operate in several modes, such as high vacuum, low vacuum, environmental mode, room temperature, low temperature and cryo. Our QFEG is fitted with an EDS detector, which allows for analytical measurements in all the operation modes. With the cryo transfer system available, it is especially suited for cryo experiments. | The QFEG 200 Cryo is an FEI Quanta FEG (Field Emission Gun) scanning electron microscope with a spatial resolution of 2 nm for the ETD detector in high vacuum at 30 keV. The microscope can operate in several modes, such as high vacuum, low vacuum, environmental mode, room temperature, low temperature and cryo. Our QFEG is fitted with an EDS detector, which allows for analytical measurements in all the operation modes. With the cryo transfer system available, it is especially suited for cryo experiments. | ||
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= Examples of the QFEG's capabilities = | = Examples of the QFEG's capabilities = | ||
''All images are taken by Marie Karen Tracy Hong Lin @DTU Nanolab'' | |||
== SEM (Scanning Electron Microscopy) == | == SEM (Scanning Electron Microscopy) == | ||
The SEM is a remarkable technique which can offer information such as the surface morphology of a sample and also a 3D appearance of the specimen. It can offer the best resolution (2 nm at 30kV) at high magnification and also topographical details because of its great depth of field. | The SEM is a remarkable technique which can offer information such as the surface morphology of a sample and also a 3D appearance of the specimen. It can offer the best resolution (2 nm at 30kV) at high magnification and also topographical details because of its great depth of field. | ||
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[[File:Blue cheese_002-1.jpg|500px|left|thumb|Cryo-SEM imaging of Blue cheese]]<br clear="all" /> | [[File:Blue cheese_002-1.jpg|500px|left|thumb|Cryo-SEM imaging of Blue cheese]]<br clear="all" /> | ||
[[File:Cryo-SEM of Mucus in rat intestine-1.jpg|500px|left|thumb|Cryo-SEM imaging of Mucus in rat intestine]]<br clear="all" /> | [[File:Cryo-SEM of Mucus in rat intestine-1.jpg|500px|left|thumb|Cryo-SEM imaging of Mucus in rat intestine]]<br clear="all" /> | ||
[[File: | [[File:20220310_Lotus leaf_023-1.jpg|500px|left|thumb|Cryo-SEM imaging of plant leaf surface]]<br clear="all" /> | ||
== EDS (Energy Dispersive X-ray Spectroscopy) == | == EDS (Energy Dispersive X-ray Spectroscopy) == | ||