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

    17 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

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