4M Knowledge base - papers
An integrated all-optical microfluidic particle sorter
S. Valkai, H. I. Kirei, L. Oroszi and P. Ormos
Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, H-6726 Szeged, Hungary
Abstract
A fully integrated microfluidic sorter is introduced. It is able to count, characterize and sort micrometer sized articles and cells. All functions of the device are performed by light. The objects to be sorted are counted optically, they are characterized by measuring their fluorescence. Even the sorting itself, directing the particles into different channels is performed by the pressure of light. The device is built by photopolymerization, from a light cured optically clear resin upon a glass plate support. The whole structure is created in a single photolithography step. The microfluidic channels and optical waveguides that carry the illuminating, detecting and sorting light form a single integrated structure. The supporting units, like sample reservoirs, pumps, light sources, light detectors are easily connected to the device from the outside. The device is optimized for simplicity. It is a proof-of-concept instrument, it demonstrates that it is possible to build simple optically driven microfluidic systems that perform complicated functions.
| 255 reads | Flexible microfluidics based on commercial SU8 foils
Chantal Khan Malek and Laurent Robert
Institute FEMTO-ST/Dpt. MN2S, CNRS UMR 6174, 32 Av. de l’Observatoire, 25044 Besançon, FRANCE
Abstract
Polymer-based microfabrication technologies are gaining momentum as they enable low cost fabrication of a variety of
microsystems, with major developments in optical and microfluidic systems. The use of dry film resist for microsystem
applications is briefly reviewed. A method based on the lamination of commercial SU8 dry films and photolithography for the formation of flexible thin film micro-devices is presented. Fast prototyping of multi-layer microfluidic simple chips with embedded channels is reported.
Copyright© 4M Network of Excellence.