Particle Image Velocimetry with "phantom'' particles: tracking below the resolution limit

by Stefano Buzzaccaro (Politecnico di Milano)

Friday 26 Oct 2012, 11:00 → 12:00 Europe/Rome

Aula Corbino (Dip. di Fisica - Edificio E. Fermi)

We propose a new velocimetry technique (Differential Velocimetry Microscopy, DVM), requiring only a standard white-light optical microscope equipped with a digital camera which allows to track the flow in microfluidic channel with temporal and spatial micrometric 3D resolution. This methods offers the key opportunity of using "phantom" tracers, namely very small scatterers with a size far below the diffraction limit, still retaining the same 3D resolution of a standard microscope.