This title appears in the Scientific Report : 2014 

Boron-Doped Nanocrystalline Diamond Microelectrode Arrays Monitor Cardiac Action Potentials
Maybeck, Vanessa (Corresponding author)
Edgington, Robert / Bongrain, Alexandre / Welch, Joseph O. / Scorsone, Emanuel / Bergonzo, Philippe / Jackman, Richard B. / Offenhäusser, Andreas
Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology; JARA-FIT
Bioelektronik; PGI-8
Bioelektronik; ICS-8
Advanced Healthcare Materials, 3 (2014) 2, S. 283–289
Weinheim Wiley-VCH 2014
10.1002/adhm.201300062
Journal Article
Physics of the Cell
Sensorics and bioinspired systems
OpenAccess
OpenAccess
Please use the identifier: http://dx.doi.org/10.1002/adhm.201300062 in citations.
Please use the identifier: http://hdl.handle.net/2128/15764 in citations.
The expansion of diamond-based electronics in the area of biological interfacing has not been as thoroughly explored as applications in electrochemical sensing. However, the biocompatibility of diamond, large safe electrochemical window, stability, and tunable electronic properties provide opportunities to develop new devices for interfacing with electrogenic cells. Here, the fabrication of microelectrode arrays (MEAs) with boron-doped nanocrystalline diamond (BNCD) electrodes and their interfacing with cardiomyocyte-like HL-1 cells to detect cardiac action potentials are presented. A nonreductive means of structuring doped and undoped diamond on the same substrate is shown. The resulting BNCD electrodes show high stability under mechanical stress generated by the cells. It is shown that by fabricating the entire surface of the MEA with NCD, in patterns of conductive doped, and isolating undoped regions, signal detection may be improved up to four-fold over BNCD electrodes passivated with traditional isolators.