Optimized Rheo-optical Measurements Using Fast Fourier Transform and Oversampling

C.O. Klein, P. Venema, L.M.C. Sagis, D. van Dusschoten, M. Wilhelm, H.W. Spiess, E. van der Linden, S.S. Rogers, A.M. Donald

Research output: Contribution to journalArticleAcademicpeer-review

18 Citations (Scopus)


Abstract: Rheo-optics is a method that allows the analysis of optical properties, like birefringence and dichroism under steady and oscillatory shear. It is possible to correlate macroscopic mechanical responses with induced microscopic changes in the material. We describe how this method was improved several fold and implemented on a commercially available setup. However, the here presented ideas are applicable to any rheo-optical setup, based on modulation of the laser light. Additionally it does not need a lock-in amplifier and therefore reduces the costs of the setup.
Original languageEnglish
Pages (from-to)45210-1-45210-7
JournalApplied Rheology
Issue number4
Publication statusPublished - 2007


  • polymer-solutions
  • rheology


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