We use holographic video microscopy to track the threedimensional 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 nanorods 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 nanorods dynamics, from which we estimate the techniques resolution.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics