Chemical mapping in the mid- and near-IR spectral regions by Hadamard transform/FT-IR spectrometry

Journal Article · Tue Apr 01 04:00:00 EST 1997 · Applied Spectroscopy

DOI:https://doi.org/10.1366/0003702971940747· OSTI ID:527965

Bellamy, M K ^[1]; Mortensen, A N ^[2]; Hammaker, R M; Fateley, W G ^[3]

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1. Department of Chemistry, University of Puerto Rico, Mayaguez Campus, Mayaguez, Puerto Rico 00681 (United States)
2. Department of Electrical and Computer Engineering, Kansas State University, Manhattan, Kansas 66506 (United States)
3. Departments of Chemistry, Kansas State University, Manhattan, Kansas 66506 (United States)

A movable two-dimensional (2D) Hadamard encoding mask is obtained and combined with conventional FT-IR spectrometers for use in both the mid- and near-infrared spectral regions. Chemical maps and spectra of individual pixels of the maps can be obtained from heterogeneous samples by using this combination of a moveable 2D Hadamard encoding mask and an FT-IR spectrometer. We call the procedure Hadamard transform/FT-IR spectrometry. Spectra of usable signal-to-noise ratio and reliable chemical maps are obtained in reasonable data acquisition and processing time. {copyright} {ital 1997} {ital Society for Applied Spectroscopy}

• DOE Contract Number: FG02-85ER13347
• OSTI ID: 527965
• Journal Information: Applied Spectroscopy, Journal Name: Applied Spectroscopy Journal Issue: 4 Vol. 51; ISSN APSPA4; ISSN 0003-7028
• Country of Publication: United States
• Language: English

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