Open AccessDigital holographic tracking of microprobes for multipoint viscosity measurements
Author(s) -
Guido Bolognesi,
S. Bianchi,
R. Di Leonardo
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.019245
Subject(s) - optics , holography , refractive index , tracking (education) , sizing , digital holography , digital holographic microscopy , characterization (materials science) , viscosity , computer science , materials science , physics , composite material , visual arts , psychology , art , pedagogy
Digital holographic microscopy provides an ideal tool for 3D tracking of microspheres while simultaneously allowing a full and accurate characterization of their main physical properties such as: radius and refractive index. We demonstrate that the combination of high resolution multipoint tracking and accurate optical sizing of tracers provides an ideal tool for precise multipoint viscosity measurements. We also report a detailed evaluation of the technique's accuracy and precision in relation to the primary sources of error.