Open-Path FTIR Detection of Explosives on Metallic Surfaces

Castro-Suarez, John R.; Pacheco‐Londoño, Leonardo C.; Vélez-Reyes, Miguel; Diem, Max; Tague, Thomas J.; Hernández‐Rivera, Samuel P.

doi:10.5772/16059

Cited by 4 publications

References 22 publications

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Infrared multispectral imaging with silicon-based multiband pass filter and infrared focal plane array

Ueno

Ishii

Suzuki

et al. 2015

2015 9th International Conference on Sensing Technology (ICST)

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This paper reports the implementation of a siliconbased infrared (IR) multiband pass filter (BPF) on an uncooled microbolometer IR focal plane array (IR-FPA), both of which are fabricated by the standard CMOS process. IR spectroscopy has been widely used as a sample identification technique, exploiting the fact that each molecule structure has a unique spectral feature. Using IR-BPF and IR-FPA, a low-cost and compact IRspectral imaging system is realized. The microbolometer IR-FPA exhibits broad spectral response sufficient to cover the IR-region from the mid-infrared (3 µm) to far-infrared (8 µm~), which is broader than the coverage of conventional non-silicon-based photodetectors such as mercury cadmium telluride. Single-band images of invisible gases such as ethanol vapor and CO 2 in breath are obtained with the IR-FPA. For multiband imaging, a guidedmode resonance IR filter is fabricated by patterning aluminum (Al) layer of 100 nm thickness on a silicon-on-insulator wafer.

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Infrared multispectral imaging with silicon-based multiband pass filter and infrared focal plane array

Ueno

Ishii

Suzuki

et al. 2015

2015 9th International Conference on Sensing Technology (ICST)

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Temperature-dependent Study of Isobutanol Decomposition

Mitchell¹,

Lee²

2012

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Influence of temperature on synthetic data-based calibration models for low resolution open-path FTIR spectroscopy

Cięszczyk¹

2014

Bulletin of the Polish Academy of Sciences: Technical Sciences

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Abstract. This article presents the problem of determining the gas concentration under conditions of changing temperatures. The solution to this problem is based on spectral measurements using chemometric models. Such problems arise when measuring gases during various industrial processes, mainly the pyrolysis process. Chemometric models are built using synthetic calibration data. Line-by-line and statistical models were applied for spectra modelling. The effect of temperature on extracting the gas concentration from spectra of various resolutions was determined. Next, the global model was built and tested using calibration data for specific temperature ranges. The properties of the linear and nonlinear partial least-squares (PLS) models that were applied to the considered issues were demonstrated. CO and CH4 were used as example gases.

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Open-Path FTIR Detection of Explosives on Metallic Surfaces

Cited by 4 publications

References 22 publications

Infrared multispectral imaging with silicon-based multiband pass filter and infrared focal plane array

Infrared multispectral imaging with silicon-based multiband pass filter and infrared focal plane array

Temperature-dependent Study of Isobutanol Decomposition

Influence of temperature on synthetic data-based calibration models for low resolution open-path FTIR spectroscopy

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