Single quantum dot (QD) imaging of fluid flow near surfaces
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- Pouya, S., Koochesfahani, M., Snee, P. et al. Exp Fluids (2005) 39: 784. doi:10.1007/s00348-005-0004-x
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.