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

被引:24
作者
Bellamy, MK
Mortensen, AN
Hammaker, RM
Fateley, WG
机构
[1] KANSAS STATE UNIV,DEPT CHEM,MANHATTAN,KS 66506
[2] KANSAS STATE UNIV,DEPT ELECT & COMP ENGN,MANHATTAN,KS 66506
[3] UNIV PUERTO RICO,DEPT CHEM,MAYAGUEZ,PR 00681
关键词
instrumentation; Hadamard transform imaging mapping; chemical mapping; Hadamard transform FT-IR spectrometry; three-dimensional imaging/mapping and spectrometry; near-IR spectrometry; mid-IR spectrometry; spectrometric techniques;
D O I
10.1366/0003702971940747
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
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-W 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.
引用
收藏
页码:477 / 486
页数:10
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