Transmission Electron Microscopy (TEM) basics

[@erimale-yk8lw]

00:08 Ernst Ruska invented the first transmission electron microscope in 1933. 02:24 TEM accelerating voltage must be high for electron penetration. 07:00 Bright Field image formation in TEM 09:15 Transmission Electron Microscopy (TEM) resolution is limited by wavelength 13:48 Numerical aperture controls resolution in TEMs 16:01 TEM resolution improved over time 20:15 Confirmation of matter waves through electron diffraction 22:15 Transmission Electron Microscopy (TEM) uses dark field imaging technique. 26:07 Transmission Electron Microscopy (TEM) can switch from real space to reciprocal space. 28:05 TEM can capture ordered patterns in single crystal systems

[@swatir.567]

I'm a 1st year student of Engineering in India, this was a very clear explaination of this topic, made me get a holistic view of everything about TEM. thank you very much :D

[@GD_902]

Thank you Tonya for this amazing lecture. 🙂

[@edgeeffect]

I'm a "lowly" software developer working on an information system for TEM users... and this was a really good introduction that's helped me start to understand what my users are "going on about"... thanks. Can I just make a suggestion though... if you put your picture of your face over on the left instead of the right, it'd cover up less of the slides????

[@mohamedelbouji8187]

great course and pefect explanation

[@akshatsharma1021]

Very helpful! Thanks a lot for this

[@maedehjalalabadi5107]

Thank you so much for your far helpful video and neat explanation

[@anlsoylu8413]

Amazing lecture!

[@Gamer212Xtreme]

I think I'm Inlove, lol. Great Lecture.

[@diegoperezsanchez5749]

Excelent explication!

[@madeinindia20]

Excellent lecture. Thank you so much!

[@PhDip]

Nicely done. Given the dearth of clear, accessible introductions on the subject, I would echo other commenters below to make follow-on videos on SEM, STEM, EBSD, etc. You're a wonderful expositor. Thank you. one very minor point: the slide "Results of D&G experiments" (circa 22:09) did not have labelled axes - which hindered my understanding of the results and your discussion points.

[@jaceju283]

I think It's sort of polar axis,not so hard to understand,when I watched your comment I was afraid as there were some mistakes that blocks me.

[@SHAKER239]

Thank you for the clear explanation 🙂

[@denizcetin675]

Why do atoms look round in TEM images even though they have different orbital shapes?

[@fatimakhan-ei5fy]

above you wrote R is inversely proportional to NA but then you said the larger the NA, higher the resolution. Isnt it contradictory?

[@MajidMohammad2]

Well done ! Thank you

[@RQDK]

how do i find the average distance between each electron in the electron beam?

[@barbaraf0]

I liked the content and the didactics. Could you add EBSD?

[@aberehabtamu3948]

Many Thanks!!!!!!!

[@kajsable]

In the presentation, you mentioned that there is a course on Advanced microscopy. May you kindly advise on which site this is offered if it is online. I am very much interested in learning more.

[@tonyacoffey5568]

Hi. Sorry, this is for a course at my university, where I work. You would have to be a student there to enroll.

[@13-ahmedmohamedhassan73]

what is your refrence

[@tonyacoffey5568]

I have many, and they are generally cited on the slide, especially for the images.

[@karthikkumard8623]

#Tonya Coffey Please Give me a PPT slide for Scanning electron microscope

[@TheShowdown16]

Great video, thanks! But I do have a pet peeve: Abbe was German Scientist, you kinda butchered his name. The E in Abbe is really short, I do realise that there is no sutch thing in english which might make saying it correctly difficult.