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PI Physik Instrumente - Revolution In Photonics Align LW LB 3/24

Spectroscopy Tools Developed

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GAITHERSBURG, Md., June 11, 2007 -- Calibration tools have been developed to help correct and confirm the performance of analytic instruments that identify substances based on fluorescence. Recent years have seen a significant increase in the development and use of fluorescence-based analytic techniques. Researchers can detect, measure and identify unknown substances -- potentially including chemical and biological weapons -- using spectroscopic techniques. In fluorescence spectroscopy, scientists send a beam of light at a certain wavelength into a sample, exciting electrons in particular analytes or fluorescent labels,...Read full article

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    Published: June 2007
    Glossary
    fluorescence
    Fluorescence is a type of luminescence, which is the emission of light by a substance that has absorbed light or other electromagnetic radiation. Specifically, fluorescence involves the absorption of light at one wavelength and the subsequent re-emission of light at a longer wavelength. The emitted light occurs almost instantaneously and ceases when the excitation light source is removed. Key characteristics of fluorescence include: Excitation and emission wavelengths: Fluorescent materials...
    fluorescence microscopy
    Fluorescence microscopy is a specialized optical imaging technique used in biology, chemistry, and materials science to visualize and study specimens that exhibit fluorescence. Fluorescence is the phenomenon where a substance absorbs light at one wavelength and emits light at a longer wavelength. In fluorescence microscopy, fluorescent dyes or proteins are used to label specific structures or molecules within a sample. The basic principles of fluorescence microscopy involve illuminating the...
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    spectrometer
    A kind of spectrograph in which some form of detector, other than a photographic film, is used to measure the distribution of radiation in a particular wavelength region.
    wavelength
    Electromagnetic energy is transmitted in the form of a sinusoidal wave. The wavelength is the physical distance covered by one cycle of this wave; it is inversely proportional to frequency.
    analyticbiologicalBiophotonicschemicalelectronsemissionfluorescencefluorescence microscopyMicroscopynanoNews & FeaturesNISTphotodegradationphotonicsSpectrometerspectroscopySRMwavelength

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