Title :
Patterning of Silicone Rubber for Micro-Electrode Array Fabrication
Author :
Schuettler, Martin ; Henle, Christian ; Ordonez, Juan ; Suaning, Gregg J. ; Lovell, Nigel H. ; Stieglitz, Thomas
Author_Institution :
Dept. of Microsystems Eng., Freiburg Univ.
Abstract :
Five methods of micro-patterning silicone rubber, (polydimethylsiloxane, PDMS) are reviewed. Three of the methods are experimentally evaluated in order to find the most suitable process parameters to expose electrode sites and contact pads of PDMS-embedded platinum structures for fabricating micro-electrode arrays. Rated by applicability, type of PDMS involved (implantable-grade required), achievable aspect ratio (AR) and minimum feature size (FS), the feasibility of two methods was demonstrated: laser-ablation, using a Nd:YAG laser (AR = 5.3, FS > 100 mum) and dry etching using a reactive ion etcher (AR = 10, FS > 10 mum).
Keywords :
laser ablation; laser beam etching; microelectrodes; silicone rubber; sputter etching; PDMS-embedded platinum structures; dry etching; laser ablation; microelectrode array fabrication; polydimethylsiloxane; reactive ion etcher; silicone rubber micropatterning; Biological materials; Dry etching; Electrodes; Fabrication; Laser ablation; Lithography; Rubber; Shape control; Sputter etching; Wet etching;
Conference_Titel :
Neural Engineering, 2007. CNE '07. 3rd International IEEE/EMBS Conference on
Conference_Location :
Kohala Coast, HI
Print_ISBN :
1-4244-0792-3
Electronic_ISBN :
1-4244-0792-3
DOI :
10.1109/CNE.2007.369610
