Refractive index contrast, in an
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Refractive index — Refraction of light at the interface between two media. In optics the refractive index or index of refraction of a substance or medium is a measure of the speed of light in that medium. It is expressed as a ratio of the speed of light in vacuum… … Wikipedia
Differential interference contrast microscopy — Micrasterias furcata imaged in transmitted DIC microscopy. Differential interference contrast microscopy (DIC), also known as Nomarski Interference Contrast (NIC) or Nomarski microscopy, is an optical microscopy illumination technique used to… … Wikipedia
Negative index metamaterials — A negative index metamaterial causes light to refract, or bend, differently than in more common positive refractive index materials. Negative index metamaterials or negative index materials (NIM) are artificial structures where the refractive… … Wikipedia
Compound refractive lens — A Compound refractive lens (CRL) is a series of individual lenses arranged in a linear array in order to achieve focusing of X rays in the energy range of 5 40 keV. For all materials the refractive index for X rays is close to 1, hence a single… … Wikipedia
Fluorescence interference contrast microscopy — Fluorescence interference contrast (FLIC) microscopy is a microscopic technique developed to achieve z resolution on the nanometer scale. FLIC occurs whenever fluorescent objects are in the vicinity of a reflecting surface (e.g. Si wafer). The… … Wikipedia
differential interference contrast — Method of image formation in the light microscope based on the method proposed by Nomarski (though strictly speaking all forms of optical microscopy rely to a greater or lesser extent on differential interference). The light beam is split by a… … Dictionary of molecular biology
phase contrast microscopy — noun A form of light microscopy in which small differences in refractive index of a transparent specimen are converted into amplitude (contrast) differences in the final image. See Also: phase contrast microscope … Wiktionary
phase-contrast microscope — noun see phase microscope * * * phase contrast microscope or phase difference microscope noun One in which phase differences due to the refractive index of cellular components are converted to differences of light intensity, of particular value… … Useful english dictionary
phase-contrast microscope — A microscope that converts slight differences in refractive index and cell density into easily observed differences in light intensity … Dictionary of microbiology
phase contrast microscopy — A simple non quantitative form of interference microscopy of great utility in visualizing live cells. Small differences in optical path length due to differences in refractive index and thickness of structures are visualized as differences in… … Dictionary of molecular biology
