Low-cost spectroscopy with a variable multivariate optical element

Natallia Uzunbajakava, Peter de Peinder, Gert W. 't Hooft, Antonius T.M. Van Gogh

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Scopus)


Here, successful realization of a variable multivariate optical element (VMOE) based on a transmissive liquid crystal (LC) panel is reported. In contrast to conventional multivariate optical elements (MOEs), a single VMOE is a dynamic system, allowing measurement of numerous analytes in different mixtures. Furthermore, VMOE has superior spectral resolution in comparison to a conventional MOE. It is demonstrated here that the system implemented in a Raman spectrometer predicts the concentration of each individual component in toluene-acetonitrile-cyclohexane mixtures with a prediction error of <6% (mass percentage). With a dedicated optical design of the setup, a prediction error smaller than 2% is expected to be feasible for the current chemical system.

Original languageEnglish
Pages (from-to)7302-7308
Number of pages7
JournalAnalytical Chemistry
Issue number20
Publication statusPublished - 15 Oct 2006
Externally publishedYes


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