Authors:
Suzan Meijs
1
;
Matthew McDonald
2
;
Søren Sørensen
3
;
Kristian Rechendorff
3
;
Vaclav Petrak
4
;
Milos Nesladek
2
;
Nico Rijkhoff
1
and
Cristian Pablo Pennisi
1
Affiliations:
1
Aalborg University, Denmark
;
2
University of Hasselt, Belgium
;
3
Danish Technological Institute, Denmark
;
4
Nano6, Czech Republic
Keyword(s):
Diamond, titanium nitride, cyclic voltammetry, electrical stimulation, neural prostheses.
Related
Ontology
Subjects/Areas/Topics:
Electrical Stimulation
;
Health Engineering and Technology Applications
;
Neuro-Interface Prosthetic Devices
;
Neuromodulation and Neural Prosthesis
;
NeuroSensing and Diagnosis
;
Neurotechnology, Electronics and Informatics
Abstract:
The aim of this study was to investigate the feasibility of depositing a thin layer of boron-doped nanocrystalline
diamond (B-NCD) on titanium nitride (TiN) coated electrodes and the effect this has on charge injection
properties. The charge storage capacity increased by applying the B-NCD film, due to the wide potential
window typical for B-NCD. The impedance magnitude was higher and the pulsing capacitance lower for
B-NCD compared to TiN. Due to the wide potential window, however, a higher amount of charge can be injected
without reaching unsafe potentials with the B-NCD coating. The production parameters for TiN and
B-NCD are critical, as they influence the pore resistance and thereby the surface area available for pulsing.