DOI

We show a proof-of-concept demonstration of a multi-parameter analysis low-cost optical detection system for the flow-cytometric identification of vinegars. This multi-parameter analysis system can simultaneously measure laser induced fluorescence, absorption and scattering excited by two time-multiplexed lasers of different wavelengths. To our knowledge no other polymer optofluidic chip based system offers more simultaneous measurements. The design of the optofluidic channels is aimed at countering the effects that viscous fingering, air bubbles, and emulsion samples can have on the correct operation of such a detection system. Unpredictable variations in viscosity and refractive index of the channel content can be turned into a source of information. The sample is excited by two laser diodes that are driven by custom made low-cost laser drivers. The optofluidic chip is built to be robust and easy to handle and is reproducible using hot embossing. We show a custom optomechanical holder for the optofluidic chip that ensures correct alignment and automatic connection to the external fluidic system. We show an experiment in which 92 samples of vinegar are measured. We are able to identify 9 different kinds of vinegar with an accuracy of 94%. Thus we show an alternative approach to the classic optical spectroscopy solution at a lowered. Furthermore, we have shown the possibility of predicting the viscosity and turbidity of vinegars with a goodness-of-fit R-2 over 0.947.
Original languageEnglish
Title of host publicationSPIE Proceedings
Subtitle of host publicationOptical Systems Design 2015: Optical Fabrication, Testing, And Metrology V
EditorsAngela Duparré, Roland Geyl
PublisherSPIE
Number of pages10
Volume9628
ISBN (Print)978-1-62841-817-0
DOIs
Publication statusPublished - 24 Sep 2015
EventOptical Fabrication, Testing, and Metrology V - Friedrich-Schiller-University, Jena, Germany
Duration: 7 Sep 201510 Sep 2015

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume9628
ISSN (Print)0277-786X

Conference

ConferenceOptical Fabrication, Testing, and Metrology V
CountryGermany
CityJena
Period7/09/1510/09/15

    Research areas

  • absorption, laser-induced-fluorescence, scattering, turbidity, viscosity, vinegar, optofluidics, multi-measurement analysis, Near-Infrared Spectroscopy, Chemometrics, Regression, Quality

ID: 18848583