Category: FEI 200k Titan Themis STEM

STEM in Electron Optics

ATTN – STEM users – TEM sample holder

We recently have encountered issues with the TEM single tilt holder and want to draw your attention to the right way of handling it.

Now that we have several certified users, and the number of users are increasing, and taking into account those parts are very expensive and may take time to replace, we all need to refresh ourselves on how to use it.

Please take a few minutes of your time to watch this YouTube video I find useful.

TEM Sample Holder Loading for Talos TFS (FEI) F200X

Please ask me if you have any questions.

Erico Freitas

For STEM users – Analysis Request forms

I have discontinued the “Intake Sample Request” form.

If you are a certified operator of the FEI Titan STEM, please fill in the “Independent Usage Request” form available through this webpage:

https://www.mtu.edu/acmal/shared-facilities/electron-optics/instrumentation/fei-200kv-titan-themis-s-tem/

If you require staff operated analysis fill in the “Request Analysis” form available through ACMAL webpage https://www.mtu.edu/acmal/

Regards,

Erico Freitas

STEM users – O2 sensor in the lab

The O2 meter at the STEM lab is inoperante. We are now using a small hand size backup O2 sensor (see picture) in the STEM lab. It’s on the window stool.

If it reads 24 it means the oxygen level is normal.

Please, do not remove this oxygen sensor out from the lab, and leave it next to the window so it’s visible from outside.

If it flashes and beeps please leave the room and let me know or ACMAL staff know.

Erico Freitas

Handheld sensor with O2 display reading at 24.

Recommended TEM grid types for different applications

This is a great and useful chart from TedPella (https://www.tedpella.com/) if you want to find out what type of TEM grid works best for your TEM work.

Most of the listed types of substrates are available for ACMAL-STEM users.

Substrates, Support Films for Transmission Electron Microscopy Grids

See the PELCO® TEM Grid Support Film Application Guide.

Erico Freitas