title: Dynamic formation of optically trapped microstructure arrays for biosensor applications.
abstract: We explore the dynamic properties of multiple-beam optical traps to manipulate arrays of microstructures for biosensor applications. Multiple optical traps are generated by a virtually loss-less transformation of input phase patterns into high-intensity trapping-beams. A direct image projection of the phase patterns enables an adjustable number of optical traps in addition to instantaneous control of the position, size, shape and intensity of each trapping-beam. We present experimental results showing various colloidal formations through dynamic optical manipulation of polystyrene microspheres and yeast cells in aqueous media. The experimental configurations are geared towards the use of multiple-beam optical traps for biosensor applications.
authors.affiliation: Optics and Fluid Dynamics Department, Risø National Laboratory, P.O. Box 49, Roskilde DK-4000, Denmark.
authors.forename: Vincent R
authors.initials: VR
authors.lastname: Daria
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Rodrigo
authors.forename: Jesper
authors.initials: J
authors.lastname: Glückstad
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation*; D008846:Micromanipulation / Q000295:instrumentation*; D008863:Microspheres; D015003:Yeasts / Q000502:physiology