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Proceedings Paper

Simple optical computing device for chemical analysis
Author(s): Olusola O. Soyemi; Lixia Zhang; DeLyle Eastwood; Hongli Li; Paul J. Gemperline; Michael L. Myrick
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Paper Abstract

Multivariate Optical Computing (MOC) devices have the potential of greatly simplifying as well as reducing the cost of applying the mathematics of multivariate regression to problems of chemical analysis in the real world. These devices utilize special optical interference coatings known as multivariate optical elements (MOEs) that are encoded with pre-determined spectroscopic patterns to selectively quantify a chemical species of interest in the presence of other interfering species. A T-format prototype of the first optical computing device is presented utilizing a multilayer MOE consisting of alternating layers of two metal oxide films (Nb2O5 and SiO2) on a BK-7 glass substrate. The device was tested by using it to quantify copper uroporphyrin in a quaternary mixture consisting of uroporphyrin (freebase), tin uroporphyrin, nickel uroporphyrin, and copper uroporphyrin. A standard error of prediction (SEP) of 0.86(mu) M was obtained for copper uroporphyrin.

Paper Details

Date Published: 15 May 2001
PDF: 12 pages
Proc. SPIE 4284, Functional Integration of Opto-Electro-Mechanical Devices and Systems, (15 May 2001); doi: 10.1117/12.426870
Show Author Affiliations
Olusola O. Soyemi, Univ. of South Carolina (United States)
Lixia Zhang, Univ. of South Carolina (United States)
DeLyle Eastwood, Univ. of South Carolina (United States)
Hongli Li, Univ. of South Carolina (United States)
Paul J. Gemperline, East Carolina Univ. (United States)
Michael L. Myrick, Univ. of South Carolina (United States)


Published in SPIE Proceedings Vol. 4284:
Functional Integration of Opto-Electro-Mechanical Devices and Systems
Michael R. Descour; Juha T. Rantala, Editor(s)

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