Refractive index determination of nanoparticles in suspension using nanoparticle tracking analysis.

نویسندگان

  • Edwin van der Pol
  • Frank A W Coumans
  • Auguste Sturk
  • Rienk Nieuwland
  • Ton G van Leeuwen
چکیده

The refractive index (RI) dictates interaction between light and nanoparticles and therefore is important to health, environmental, and materials sciences. Using nanoparticle tracking analysis, we have determined the RI of heterogeneous particles <500 nm in suspension. We demonstrate feasibility of distinguishing silica and polystyrene beads based on their RI. The hitherto unknown RI of extracellular vesicles from human urine was determined at 1.37 (mean). This method enables differentiation of single nanoparticles based on their RI.

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عنوان ژورنال:
  • Nano letters

دوره 14 11  شماره 

صفحات  -

تاریخ انتشار 2014