27 April 2016 Dual fiber optical trapping in a polymer-based microfluidic chip
Author Affiliations +
We present a microfluidic chip in Polymethyl methacrylate (PMMA) for optical trapping of particles in an 80μm wide microchannel using two counterpropagating single-mode beams. The trapping fibers are separated from the sample fluid by 70μm thick polymer walls. We calculate the optical forces that act on particles flowing in the microchannel using wave optics in combination with non-sequential ray-tracing and further mathematical processing. We use a novel fabrication process that consists of a premilling step and ultraprecision diamond tooling for the manufacturing of the molds and double-sided hot embossing for replication, resulting in a robust microfluidic chip for optical trapping. In a proof-of-concept demonstration, we show the trapping capabilities of the hot embossed chip by trapping spherical beads with a diameter of 6μm, 8μm and 10μm and use the power spectrum analysis of the trapped particle displacements to characterize the trap strength.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Heidi Ottevaere, Heidi Ottevaere, Diane de Coster, Diane de Coster, Michael Vervaeke, Michael Vervaeke, Jürgen Van Erps, Jürgen Van Erps, Manly Callewaert, Manly Callewaert, Pieter Wuytens, Pieter Wuytens, Wim De Malsche, Wim De Malsche, Hugo Thienpont, Hugo Thienpont, "Dual fiber optical trapping in a polymer-based microfluidic chip", Proc. SPIE 9888, Micro-Optics 2016, 98880B (27 April 2016); doi: 10.1117/12.2227917; https://doi.org/10.1117/12.2227917


Fiber optic approach for detecting corrosion
Proceedings of SPIE (April 19 2016)
Beam transformations by active GRIN materials
Proceedings of SPIE (July 26 2011)
Large-area polymer replication for microfluidic devices
Proceedings of SPIE (April 04 2001)
Beam profile approach to lens design for fiber optics
Proceedings of SPIE (February 16 2003)

Back to Top