title: Measuring nanoparticle flow with the image structure function.
abstract: We present a technique to measure the velocity and flow profiles of a nanofluid in a microfluidic channel. Importantly, we extract the flow velocity from a series of standard brightfield images without employing particle tracking or laser-enhanced methods. Our analysis retrieves the flow information from the image structure function of sub-diffraction limited nanoparticles in suspension. We are able to spatially resolve the flow velocity and map out the parabolic flow profile across the width of a microfluidic channel.
authors: SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, UK. maria.dienerowitz@glasgow.ac.uk
authors: Maria
authors: M
authors: Dienerowitz
authors: Michael
authors: M
authors: Lee
authors: Graham
authors: G
authors: Gibson
authors: Miles
authors: M
authors: Padgett
mesh_terms: D006046:Gold / Q000737:chemistry; D007834:Lasers; D053768:Metal Nanoparticles / Q000737:chemistry; D046210:Microfluidic Analytical Techniques / Q000295:instrumentation / Q000379:methods*; D053758:Nanoparticles / Q000737:chemistry*
chemical_list: D006046:Gold