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Caustic Imaging of Gallium Droplets Using Mirror Electron Microscopy by S.M. Kennedy; C.X. Zheng; W.X. Tang; D.M. Paganin; D.E. Jesson is a Physics and Astronomy article available to read on EtoBox.

What is Caustic Imaging of Gallium Droplets Using Mirror Electron Microscopy about?

We discuss a new interpretation of mirror electron microscopy (MEM) images, whereby electric field distortions caused by surface topography and/or potential variations are sufficiently large to create caustics in the image contrast. Using a ray-based trajectory method, we consider how a family of rays overlaps to create caustics in the vicinity of the imaging plane of the magnetic objective lens. Such image caustics contain useful information on the surface topography and/or potential, and can be directly related to surface features. Specifically we show how a through-focus series of MEM images can be used to extract the contact angle of a Ga droplet on a GaAs (001) surface.

Who reads Caustic Imaging of Gallium Droplets Using Mirror Electron Microscopy?

Author

S.M. Kennedy; C.X. Zheng; W.X. Tang; D.M. Paganin; D.E. Jesson

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0304-3991)

Published

2011

Language

EN

Field

Physics and Astronomy (Physical Sciences)