Physics – Optics
Scientific paper
2012-02-08
Physics
Optics
19 pages, 6 figures, 1 table
Scientific paper
Digital holographic microscopy is a fast three-dimensional (3D) imaging tool with many applications in soft matter physics. Recent studies have shown that digital holograms can be fit to electromagnetic scattering solutions to obtain the 3D positions of isolated colloidal spheres with nanometer precision and millisecond temporal resolution. Here we describe the results of new techniques that extend the range of systems that can be imaged through fitting. We show that an exact multisphere superposition scattering solution can be used to fit holograms of colloidal clusters containing up to six spheres. We also introduce an approximate and computationally simpler solution, Mie superposition, that is valid for multiple spheres spaced several wavelengths or more from one another. We show that this method can be used to fit holograms of several spheres on an emulsion droplet, and we give a quantitative criterion for assessing its validity.
Dimiduk Thomas G.
Fung Jerome
Manoharan Vinothan N.
Perry Rebecca W.
No associations
LandOfFree
Imaging Multiple Colloidal Particles by Fitting Digital Holograms to Electromagnetic Scattering Solutions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Imaging Multiple Colloidal Particles by Fitting Digital Holograms to Electromagnetic Scattering Solutions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Imaging Multiple Colloidal Particles by Fitting Digital Holograms to Electromagnetic Scattering Solutions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-64069