Details

Autor(en) / Beteiligte

• Putkunz, Corey T
• D'Alfonso, Adrian J
• Morgan, Andrew J
• Weyland, Matthew
• Dwyer, Christian
• Bourgeois, Laure
• Etheridge, Joanne
• Roberts, Ann
• Scholten, Robert E
• Nugent, Keith A
• Allen, Leslie J

Titel

Atom-scale ptychographic electron diffractive imaging of boron nitride cones

Ist Teil von

• Physical review letters, 2012-02, Vol.108 (7), p.073901-073901, Article 073901

Ort / Verlag

United States

Erscheinungsjahr

2012

Link zum Volltext

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• Ptychographic coherent diffractive imaging (CDI) has been extensively applied using both x rays and electrons. The extension to atomic resolution has been elusive. This Letter demonstrates ptychographic electron diffractive imaging at atomic resolution, permitting identification of structure in a boron nitride helical cone at a resolution of order 1 Å, beyond that of comparative Z-contrast images. A scanning transmission electron microscope is used to create a diverging illumination in a defocused Fresnel CDI geometry, providing a robust strategy leading to a unique solution.