Open AccessOptical tracking of spherical micro-objects in spatially periodic interference fields
Author(s) -
Tomáš Čižmár,
Pavel Zemánek
Publication year - 2007
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.15.002262
Subject(s) - optics , tracking (education) , position (finance) , interference (communication) , physics , perpendicular , computer vision , computer science , mathematics , psychology , computer network , pedagogy , channel (broadcasting) , geometry , finance , economics
We present a new method that provides precise detection of micro-object position with respect to a spatially periodic illumination field. Altering the mutual position of the object and the illumination field causes that a pattern of scattered light detected perpendicularly by a CCD camera changes. We present a procedure how to employ this pattern changes to track micrometer-size object in the standing wave and how to apply this method to optical tracking of Brownian particle even in periodic illumination field in motion.