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Proceedings Paper

Nano-structuring of polymer surfaces by multibeam laser interference for application in microfluidics
Author(s): T. Klotzbuecher; A. Radke; A. Tunayar; O. Haverbeck; E. Weinbender; J. Wuesten; A. Toufali; J. Claussen; P. Detemple
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Paper 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.

Paper Details

Date Published: 23 February 2008
PDF: 12 pages
Proc. SPIE 6880, Laser-based Micro- and Nanopackaging and Assembly II, 68800F (23 February 2008); doi: 10.1117/12.768348
Show Author Affiliations
T. Klotzbuecher, Institut fuer Mikrotechnik Mainz GmbH (Germany)
A. Radke, Institut fuer Mikrotechnik Mainz GmbH (Germany)
A. Tunayar, Institut fuer Mikrotechnik Mainz GmbH (Germany)
O. Haverbeck, Institut fuer Mikrotechnik Mainz GmbH (Germany)
E. Weinbender, Institut fuer Mikrotechnik Mainz GmbH (Germany)
J. Wuesten, Institut fuer Mikrotechnik Mainz GmbH (Germany)
A. Toufali, Institut fuer Mikrotechnik Mainz GmbH (Germany)
J. Claussen, Institut fuer Mikrotechnik Mainz GmbH (Germany)
P. Detemple, Institut fuer Mikrotechnik Mainz GmbH (Germany)


Published in SPIE Proceedings Vol. 6880:
Laser-based Micro- and Nanopackaging and Assembly II
Wilhelm Pfleging; Yongfeng Lu; Kunihiko Washio; Willem Hoving; Jun Amako, Editor(s)

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