Interconnection technologies for laser-patterned electrode arrays

Author

Schuettler, Martin ; Henle, Christian ; Ordonez, Juan S. ; Meier, Wolfgang ; Guenther, Thomas ; Stieglitz, Thomas

Author_Institution

Laboratory for Biomedical Microtechnology, Department of Microsystems Engineering, University of Freiburg, Germany

fYear

2008

fDate

20-25 Aug. 2008

Firstpage

3212

Lastpage

3215

Abstract

Standard interconnection technologies are reviewed in respect to their applicability to electrically and mechanically connect laser-patterned nerve electrodes made from silicone rubber and platinum foil to wires and screen printed alumina substrates. Laser welding, gap welding, microflex ball bonding, and soldering are evaluated. Corresponding processes were established and evaluated in respect to their mechanical strength. Best results were obtained by soldering. If soldering cannot be used because of regulatory reasons, parallel gap welding and microflex are recommended. Laser welding provides weaker interconnects with only moderate reproducibility.

Keywords

Bonding; Electrodes; Laser modes; Optical arrays; Platinum; Reproducibility of results; Rubber; Soldering; Welding; Wires; Aluminum; Electrodes; Electrons; Equipment Design; Humans; Lasers; Materials Testing; Microscopy, Electron, Scanning; Neurons; Platinum; Rubber; Silicon; Stress, Mechanical; Surface Properties;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE

Conference_Location

Vancouver, BC

ISSN

1557-170X

Print_ISBN

978-1-4244-1814-5

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/IEMBS.2008.4649887

Filename

4649887