Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Next revision
Previous revision
sem [2010/06/02 13:25]
ethanminot created
sem [2010/06/02 16:53] (current)
ethanminot
Line 3: Line 3:
 Before using the SEM on campus yous should read the [[http://​en.wikipedia.org/​wiki/​Scanning_electron_microscope|SEM entry in wikipedia]] and learn about: Before using the SEM on campus yous should read the [[http://​en.wikipedia.org/​wiki/​Scanning_electron_microscope|SEM entry in wikipedia]] and learn about:
  
-  * Scanning process and image formation (note that beam energy and interaction volume are a critical parameters when imaging single wall +  * Scanning process and image formation (note that beam energy and interaction volume are a critical parameters when imaging single wall nanotubes)
-nanotubes)+
   * Sample prep (importance of grounding the sample)   * Sample prep (importance of grounding the sample)
-  * Detection of secondary electrons/​backscattered electrons+  * Detection of secondary electrons/​backscattered electrons ​(secondary electrons are typically used to image CNTs)
   * Resolution of the SEM (depends more on the size of the interaction volume, rather than the beam spot size)   * Resolution of the SEM (depends more on the size of the interaction volume, rather than the beam spot size)
  
 For good, practical, advice about tuning the aperature and stigmators see this [[http://​www.emcourses.com/​aptstig.htm|webpage]]. For good, practical, advice about tuning the aperature and stigmators see this [[http://​www.emcourses.com/​aptstig.htm|webpage]].
 +
 +This paper from [[http://​www.physics.umd.edu/​mfuhrer/​pubs.htm|Michael Fuhrer'​s group]] has useful information for seeing single walled CNTs:
 +"Rapid Imaging of Nanotubes on Insulating Substrates"​
 +T. Brintlinger et al. Applied Physics Letters 81, 2454 (2002).
  
  

QR Code
QR Code sem (generated for current page)