title: Rotational and translational diffusion of copper oxide nanorods measured with holographic video microscopy.
abstract: We use holographic video microscopy to track the three-imensional translational and rotational diffusion of copper oxide nanorods suspended in water. Rayleigh-Sommerfeld back-propagation of a single holographic snapshot yields a volumetric reconstruction of the nanorod's optical scattering pattern, from which we estimate both its dimensions and also its instantaneous position and orientation. Analyzing a video sequence yields measurements of the freely diffusing nanorod's dynamics, from which we estimate the technique's resolution.
authors.affiliation: Department of Physics and Center for Soft Matter Research, New York University, New York, NY 10003, USA.
authors.forename: Fook Chiong
authors.initials: FC
authors.lastname: Cheong
authors.forename: David G
authors.initials: DG
authors.lastname: Grier
mesh_terms: D003300:Copper / Q000737:chemistry*; D004058:Diffusion; D004867:Equipment Design; D006696:Holography / Q000379:methods*; D053768:Metal Nanoparticles / Q000737:chemistry*; D018715:Microscopy, Video / Q000379:methods*; D015233:Models, Statistical; D043942:Nanotubes / Q000737:chemistry*; D055095:Optics and Photonics; D010825:Physics / Q000379:methods; D012542:Scattering, Radiation; D013997:Time Factors
chemical_list: D003300:Copper; C000520:cuprous oxide