Low voltage SEM--prospects and limits in biological research.
Low voltage SEM shows, in general, topographic and compositional contrast of nonconducting beam-sensitive specimens by secondary electrons without coating. But until now imaging of small surface features rich in contrast requires metal-coating.
Peschke
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Academy of Sciences of the GDR, Central Institute of Microbiology and Experimental Therapy, Jena.
D008855:Microscopy, Electron, Scanning / Q000295:instrumentation / Q000379:methods*; D013499:Surface Properties