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Proceedings Paper

Interactive light-powered lab-on-a-chip: simultaneous actuation of microstructures by optical manipulation
Author(s): Peter John Rodrigo; Rene Lynge Eriksen; Vincent Ricardo Daria; Jesper Gluckstad
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Paper Abstract

We demonstrate the flexibility of a multiple-beam trapping system that enables interactive manipulation of fluid-borne colloidal structures with advanced controllability and versatility that can lead to light-powered microdevices performing multiple functions in a "lab-on-a-chip". A straightforward phase-imaging operation forms the basis for the efficient generation of arbitrarily shaped trapping beam configurations. The multiple-beam trapping pattern is a direct map of the phase variation encoded on a programmable phase-only spatial light modulator (SLM). A graphical user interface that encodes desired phase patterns onto the SLM enables interactive and independent control over the dynamics and geometry of each trapping beam. Experimental results show that the system can be used for guided assembly of particles in a plane, control of particle stacking along a beam axis, and real-time sorting of inhomogeneous mixtures of microspheres. These experiments illustrate that multiple beams generated by the system can be utilized not only for the improved synthesis of functional microstructures but also for their non-contact and parallel actuation crucial for sophisticated microfluidic-based lab-on-a-chip demonstrations in the future.

Paper Details

Date Published: 18 April 2003
PDF: 6 pages
Proc. SPIE 5119, Bioengineered and Bioinspired Systems, (18 April 2003); doi: 10.1117/12.498286
Show Author Affiliations
Peter John Rodrigo, Riso National Lab. (Denmark)
Rene Lynge Eriksen, Riso National Lab. (Denmark)
Vincent Ricardo Daria, Riso National Lab. (Denmark)
Jesper Gluckstad, Riso National Lab. (Denmark)

Published in SPIE Proceedings Vol. 5119:
Bioengineered and Bioinspired Systems
Angel Rodriguez-Vazquez; Derek Abbott; Ricardo Carmona, Editor(s)

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