Hi,
See http://en.wikipedia.org/wiki/Dark_field_microscopy
Sometimes, dark-field image is useful to inspect surface uniformity after
etching.
Oray Orkun Cellek
On Sat, May 2, 2009 at 4:13 PM, Evelyn B wrote:
> Can anyone tell me what the purpose/application of dark field illumination
> is? Can anyone recommend a good site or paper that explains the concept
> and
> shows applications?