Multimode Imaging in the Thermal Infrared for Chemical Contrast Enhancement. Part 1: Methodology
We combine a thermal light source with a conventional thermal infrared camera, alternating current (AC) detection methods, and chemical filtering of the infrared (IR) light to generate several imaging modalities in a simple manner. We demonstrate that digital lock-in amplifier techniques can increas...
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| Veröffentlicht in: | Analytical chemistry (Washington) 2010-10, Vol.82 (20), p.8412-8420 |
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| container_end_page | 8420 |
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| container_issue | 20 |
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| container_title | Analytical chemistry (Washington) |
| container_volume | 82 |
| creator | Brooke, Heather Baranowski, Megan R McCutcheon, Jessica N Morgan, Stephen L Myrick, Michael L |
| description | We combine a thermal light source with a conventional thermal infrared camera, alternating current (AC) detection methods, and chemical filtering of the infrared (IR) light to generate several imaging modalities in a simple manner. We demonstrate that digital lock-in amplifier techniques can increase the chemical contrast in an active thermal infrared image using both reflectance and thermal re-emission. We show this method is useful for visualizing thin coatings on fabrics that are invisible to the eye. We also take advantage of a “like-detects-like” chemical filtering approach to chemical selectivity for the purpose of chemical identification using a broadband thermal detector. |
| doi_str_mv | 10.1021/ac101109w |
| format | Article |
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| ispartof | Analytical chemistry (Washington), 2010-10, Vol.82 (20), p.8412-8420 |
| issn | 0003-2700 1520-6882 |
| language | eng |
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| source | American Chemical Society Journals |
| subjects | Analytical chemistry Chemistry Electric currents Exact sciences and technology Heat Light Methods Spectrometric and optical methods |
| title | Multimode Imaging in the Thermal Infrared for Chemical Contrast Enhancement. Part 1: Methodology |
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