Improve STM Image Quality: Trace Artifacts

  • Context: Graduate 
  • Thread starter Thread starter superwolf
  • Start date Start date
  • Tags Tags
    Image Quality Stm
Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
3 replies · 3K views
superwolf
Messages
179
Reaction score
0
Any suggestions how I can improve the quality of STM (scanning tunneling microscopy) images? And how can I trace artifacts?
 
Physics news on Phys.org
This isn't a field that I'm familiar with, but my first and only thought on the subject would be some sort of computer enhancement.
 
superwolf said:
Any suggestions how I can improve the quality of STM (scanning tunneling microscopy) images? And how can I trace artifacts?

This question is extremely vague because you did not describe what you have, and what kind of "improvement" we are talking about.

STM is a very complicated instrument. I can rattle off a bunch of issues that can easily affect the quality of your image: EM isolation, vibration isolation, the size of the tip, how good is your feedback circuitry, what is your best current/voltage/spatial resolution, etc... etc. Even the type of material can affect how well you can image something, i.e. can it be cleaved in vacuum to reveal a pristine surface?

There are a million things there to deal with, and not enough information to deduce anything.

Zz.
 
And post-processing is also important, programs like SPIP can make a huge difference to the "image quality" of an STM image, although they can also introduce artifacts if you are not careful.