Observation by transmission electron microscopy of etch figures obtained on an organic molecular crystal

✍ Scribed by Michel Mercier; Mohamed Karim Raimi; Louis Bonpunt

• Publisher: John Wiley and Sons
• Year: 1992
• Tongue: English
• Weight: 788 KB
• Volume: 21
• Category: Article
• ISSN: 1059-910X
• DOI: 10.1002/jemt.1070210108

✦ Synopsis

It is interesting to apply the method of etch figures to the study of organic molecular crystal defects, by observing the etch pits as soon as they are produced. We have set up a method to determine the geometrical forms of such small etch pits, observed on pre-shadowed replicas of naphthalene crystal surfaces. The described experimental procedure was designed to avoid artefacts due to vacuum sublimation and moisture traces on the replicated surface. Stereoscopic observation makes interpretation possible. The 3-D morphology and size of etch figures Naphthalene, Dislocations, Replicas, Ultrastructure smaller than 1 km can be determined.