Chemical imaging is the analytical capability to create a visual image of components distribution from simultaneous measurement of spectra and spatial, time information.
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15 Facts About Chemical imaging
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Software for chemical imaging is most specific and distinguished from chemical methods such as chemometrics.
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The parallel nature of chemical imaging data makes it possible to analyze multiple samples simultaneously for applications that require high throughput analysis in addition to characterizing a single sample.
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NIR, IR and Raman chemical imaging is referred to as hyperspectral, spectroscopic, spectral or multispectral imaging.
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However, other ultra-sensitive and selective Chemical imaging techniques are in use that involve either UV-visible or fluorescence microspectroscopy.
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Chemical imaging techniques are critical to understanding modern manufactured products and in some cases is a non-destructive technique so that samples are preserved for further testing.
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Interferometer-based chemical imaging requires that entire spectral ranges be collected, and therefore results in hyperspectral data.
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In Chemical imaging, the field of view is a product of the magnification and the number of pixels in the detector array.
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Chemical imaging has been implemented for mid-infrared, near-infrared spectroscopy and Raman spectroscopy.
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Mid-infrared chemical imaging can be performed with nanometer level spatial resolution using atomic force microscope based infrared spectroscopy.
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NIR chemical imaging is particularly useful for performing rapid, reproducible and non-destructive analyses of known materials.
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NIR Chemical imaging instruments are typically based on a hyperspectral camera, a tunable filter or an FT-IR interferometer.
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Fluorescence emission microspectroscopy and Chemical imaging are commonly used to locate protein crystals in solution, for the characterization of metamaterials and biotechnology devices.
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Concept of the detection limit for chemical imaging is quite different from for bulk spectroscopy, as it depends on the sample itself.
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Therefore, detection limits of chemical imaging techniques are strongly influenced by particle size, the chemical and spatial heterogeneity of the sample, and the spatial resolution of the image.
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