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SECM detection of single boron doped diamond nanodes and nanoelectrode arrays using phase-operated shear force technique

: Dincer, C.; Laubender, E.; Hees, J.; Nebel, C.E.; Urban, G.; Heinze, J.


Electrochemistry communications 24 (2012), pp.123-127
ISSN: 1388-2481
Journal Article
Fraunhofer IAF ()
scanning electrochemical microscopy (SECM); constant-distance mode; boron doping; shear force detection; nanoelectrode array

Boron doped diamond (BDD) is a promising electrode material for electrochemical biosensor applications due to its low bio-fouling, chemical stability, and large potential window. For the first time, BDD nanoelectrode arrays (NEA) were studied using Scanning Electrochemical Microscopy (SECM) measurements. Using the phase-operated shear force technique and feedback mode, it was possible to scan a platinum (Pt) nanode with an active radius of 167 nm over a diamond array at a constant distance of 45 nm and to detect the electrochemical activity of single BDD nanodes in the 100 nm range.