dark-field

dark′-field`



adj.
of or pertaining to the illumination of an object by which it is seen, through a microscope, as bright against a dark background.
[1860–65]
References in periodicals archive ?
Well-known optical methods for image processing can also be deployed in Wi-Fi holography: one example is the dark-field methodology used in microscopy, which improves the recognition of weakly diffracting structures.
Integrating bright- and dark-field imaging, the Geri+ incubator now allows for combination with the Eeva software and any Geri Assess version.
This system consists of two technologies, such as bright-field inspection and dark-field inspection.
Position the F3 skirt piece over the fabric following the grainline and aligning the center-front line in the center of the dominant field, the waistline with dark-field horizontal stripes, the hip line above the dominant light-colored stripe.
It is also suited for brightfield, dark-field, live cell imaging, histology and pathology.
For example, one part may require inspection using an overhead light, while another may need an under light, and a third may require a dark-field inspection.
Among the topics are active dopant profiling in the TEM by off-axis electron holography, dark-field electron holography for strain mapping, magnetic mapping using electron holography, in situ characterization methods in TEM, and preparing specimens for semiconductor analysis.
The FDA approved two dark-field HER2 ISH assays (fluorescence ISH) and three bright-field HER2 ISH assays (chromogenic ISH) for assessing HER2 gene status in breast cancer patients.
Each 60s exposure image was dark-field subtracted using the relevant nightly dark-field image, and the magnitude of CQ Cep determined by differential photometry using AstroArt 5.
Dark-field microscopy is also helpful in revealing the refractile character of silicone.
This is supplied with both reflected and transmitted light sources in addition to dark-field objectives allowing for the examination of highly reflective samples.
8 nm resolution) in both bright-field and dark-field modes.