Novel caustic phenomena, which contain fold, butterfly and elliptic umbilic catastrophes, are observed in defocused images of two approximately collinear oppositely biased metallic tips in a transmission electron microscope. The observed patterns depend sensitively on defocus, on the applied voltage between the tips and on their separation and lateral offset. Their main features are interpreted on the basis of a projected electrostatic potential model for the electron-optical phase shift.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.ultramic.2015.04.003 | DOI Listing |
Publication Analysis
Top Keywords
caustic phenomena
8
tunable caustic
4
phenomena electron
4
electron wavefields
4
wavefields novel
4
novel caustic
4
phenomena fold
4
fold butterfly
4
butterfly elliptic
4
elliptic umbilic
4
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!