Nano-structuring of polymer surfaces by multibeam laser interference for application in microfluidics

T. Klotzbuecher; A. Radke; A. Tunayar; O. Haverbeck; E. Weinbender; J. Wuesten; A. Toufali; J. Claussen; P. Detemple

doi:10.1117/12.768348

23 February 2008 Nano-structuring of polymer surfaces by multi-beam laser interference for application in micro-fluidics

T. Klotzbuecher, A. Radke, A. Tunayar, O. Haverbeck, E. Weinbender, J. Wuesten, A. Toufali, J. Claussen, P. Detemple

Author Affiliations +

Proceedings Volume 6880, Laser-based Micro- and Nanopackaging and Assembly II; 68800F (2008) https://doi.org/10.1117/12.768348
Event: Lasers and Applications in Science and Engineering, 2008, San Jose, California, United States

Abstract

The interference of three coherent laser beams of a HeCd-laser with a wavelength of 325 nm was used to create a periodic intensity distribution into the photo-resist AZ4562. The beam configuration for the laser beam interference was carefully chosen, so that well defined patterns of two-dimensional periodicity were generated in the photo-resist. Moulding tools were fabricated from the generated nano-structures via electroforming processes, allowing for a fast replication of the nano-structured surfaces via hot embossing. Hot embossed polymers were used to increase the effective surface of micro-fluidic devices like e.g. Polymerase-Chain-Reaction(PCR)-chips. The Nano-structured surfaces were characterized concerning their contact angles when wetted with de-ionized water. It was found that the nano-structures influenced the wetting behaviour of micro-fluidic chip surfaces clearly, especially Polypropylene (PP) surfaces showed a superhydrophobic behaviour.

Citation Download Citation

T. Klotzbuecher, A. Radke, A. Tunayar, O. Haverbeck, E. Weinbender, J. Wuesten, A. Toufali, J. Claussen, and P. Detemple "Nano-structuring of polymer surfaces by multi-beam laser interference for application in micro-fluidics", Proc. SPIE 6880, Laser-based Micro- and Nanopackaging and Assembly II, 68800F (23 February 2008); https://doi.org/10.1117/12.768348

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