1.6: How to see dislocations

[@Kumar_MSME_IITH]

Great Video with a lot of information............... Thank You So much

[@jerryk974]

Very informative! Thanks for sharing!

[@coolisfoolable]

amazing video. thanks!

[@kevinchen1917]

Hi Prof. Xie, thanks a lot for the nice video, may I know how to distinguish partial and perfect dislocations using tem?

[@kelvinxiemsentamu6890]

Hi, in theory, there is no perfect dislocation. All dislocations are partial. For large dislocation dissociation, you can use weak-beam dark-field to resolve them. For small dissociation, you need to use HRTEM.

[@kevinchen1917]

Thanks a lot for the reply@@kelvinxiemsentamu6890

[@rudi5764]

Your videos are so great. Thank you.

[@tepeujose7289]

good video but my question is can dislocations be visualized with a light microscope using blue light ??

[@kelvinxiemsentamu6890]

Unlikely you can use an optical microscope to see dislocations.

[@felixutama6823]

how to analyze dislocation in STEM?

[@kelvinxiemsentamu6890]

It is actually same has TEM but STEM gives much better images as you get less dynamical effect.

[@kevinchen1917]

Very nice vedio, but for a TEM new user, it's hard for me to tilt zone to two beam condition. Do you have any suggestions?

[@kelvinxiemsentamu6890]

You can converge the beam to show the Kikuchi lines in the diffraction mode. Then you can use Kikuchi lines as a map to do tilting.

[@kevinchen1917]

@@kelvinxiemsentamu6890 Thanks, that's helpful