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A polymer neural probe with tunable flexibility

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Author

Summary, in English

A novel polymeric material, off-stoichiometry thiol-ene-epoxy (OSTE+), has been evaluated for the fabrication of neural implants. OSTE+ is easily photo-structurable and exhibits mechanical properties suitable for stable implantation of the probe into brain tissue, while being sufficiently soft at physiological temperatures to reduce living tissue damage. The facile processing of OSTE+ allows use in applications where SU-8 or polyimide currently are the materials of choice. Uniquely, OSTE+ has a Young's modulus of 1.9 GPa at 10 degrees C decreasing almost two orders of magnitude to 30 MPa at 40 degrees C, which can be compared to the Young's modulus of 2.1 GPa for SU-8. We show a probe, with nine gold electrode sites, implanted into 0.5% agar at 40 degrees C using active cooling during the implantation.

Publishing year

2013

Language

English

Pages

691-694

Publication/Series

2013 6th International IEEE/Embs Conference on Neural Engineering (NER)

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Medical Engineering

Conference name

6th International IEEE EMBS Conference on Neural Engineering (NER)

Conference date

2013-11-06 - 2013-11-08

Status

Published

ISBN/ISSN/Other

  • ISSN: 1948-3546