Single quantum dot (QD) imaging of fluid flow near surfaces
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We introduce the use of quantum dot (QD) nanoparticles for near-surface velocimetry and provide preliminary data to demonstrate its feasibility. Evanescent wave illumination is used to image the motion of water-soluble (CdSe)ZnS QDs with a core size of 6 nm within a region of order 100 nm of a surface . Results are presented for the two in-plane components of the velocity field.
- Zettner CM, Yoda M (2003) Particle velocity field measurements in a near-wall flow using evanescent wave illumination. Exp Fluids 34:115Google Scholar