diffraction

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  • noun

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when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands

References in periodicals archive ?
For a microscope using visible light (400-700 nm), the diffraction limit is roughly 250 nm.
The effect occurs as light waves cause interference on their way through the optical system and is known as the diffraction limit.
In the PapMap SCP method described, the surface of the entire sample area is automatically scanned at a pixel size smaller than the diffraction limit, regardless of whether or not the surface is occupied by a cell, producing a large spectral dataset of the entire sample area.
Such research has the potential to boost the scaling of optical technologies below the diffraction limit, opening unprecedented opportunities for basic and applied research.
The technology overcomes the classical diffraction limit to microscopic resolution by combining a special illumination pattern with state-of-the-art computational image analysis.
In any optical system, there is a limit, termed diffraction limit, which determines the minimum focal area and hence the maximum irradiance that can be attained (Ready, 2001).
This enables scientists in biomedical research to image cellular structures marked with fluorescent dyes with maximum spatial resolution below the classic diffraction limit of microscopes, i.
Researchers have circumvented the diffraction limit before.
Near-field scanning optical microscopy (NSOM) has extended optical measurements past the diffraction limit, making it possible for the first time to view objects and features in the 50 to 100 nanometer (nm) range.
What enables the new microscope to both beat the diffraction limit and reduce distortion from its oblong spot, he explains, is a one-two combination of laser pulses.
We want to buy to buy the Tartu University chemistry research institute based nanoskoobi expiry of stimulated emission of fluorescence, fluorescent scientific studies referenced spatial resolution which is less than the diffraction limit of light, according to the tender documents and specifications set forth in Annex 1.
Coherent light sources at the nanometer scale are important not only for exploring phenomena in small dimensions but also for realizing optical devices with sizes that can beat the diffraction limit of light," said Teri Odom, a nanotechnology expert who led the research.
Among the techniques are the surface-induced structure formation of polymer blends, chemo-mechanical surface modifications of materials for patterning, ion-beam patterning, photolithography beyond the diffraction limit, manipulating biomolecules and reactions, and high-resolution printing techniques for plastic electronics.
Even at its calmest, however, the atmosphere blurs star images to a diameter at least 10 times greater than a large telescope's natural diffraction limit.
Enhanced Resolution Enables ContourGT 3D Optical Microscopes to Break Diffraction Limit