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Multichannel Boron Doped Nanocrystalline Diamond Ultramicroelectrode Arrays: Design, Fabrication and Characterization
CEA-LIST, Diamond Sensors Laboratory, Gif-sur-Yvette 91191, France
Université Paris Est, ESYCOM EA2552, ESIEE Cité Descartes, BP99, Noisy Le Grand 93162, France
Institut des Neurosciences Cognitives et Intégratives d’Aquitaine (INCIA), Université de Bordeaux, UMR 5287, Bordeaux 33000, France
INSERM, U968, Institut de la Vision, Paris 75012, France
UPMC, Institut de la Vision, Université Paris 06, UMR_S968, Paris 75012, France
CEA-LITEN-DTS, Laboratoire de Stockage de l’Electricité, Le Bourget du Lac 73377, France
* Author to whom correspondence should be addressed.
Received: 24 April 2012; in revised form: 23 May 2012 / Accepted: 4 June 2012 / Published: 7 June 2012
Abstract: We report on the fabrication and characterization of an 8 × 8 multichannel Boron Doped Diamond (BDD) ultramicro-electrode array (UMEA). The device combines both the assets of microelectrodes, resulting from conditions in mass transport from the bulk solution toward the electrode, and of BDD’s remarkable intrinsic electrochemical properties. The UMEAs were fabricated using an original approach relying on the selective growth of diamond over pre-processed 4 inches silicon substrates. The prepared UMEAs were characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The results demonstrated that the electrodes have exhibited a very fast electrode transfer rate (k0) up to 0.05 cm∙s−1 (in a fast redox couple) and on average, a steady state limiting current (in a 0.5 M potassium chloride aqueous solution containing 1 mM Fe(CN)64− ion at 100 mV∙s−1) of 1.8 nA. The UMEAs are targeted for electrophysiological as well as analytical applications.
Keywords: ultramicroelectrode; boron doped diamond; electrochemical impedance spectroscopy; biosensor array; statistical study of microelectrode arrays
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Kiran, R.; Rousseau, L.; Lissorgues, G.; Scorsone, E.; Bongrain, A.; Yvert, B.; Picaud, S.; Mailley, P.; Bergonzo, P. Multichannel Boron Doped Nanocrystalline Diamond Ultramicroelectrode Arrays: Design, Fabrication and Characterization. Sensors 2012, 12, 7669-7681.
Kiran R, Rousseau L, Lissorgues G, Scorsone E, Bongrain A, Yvert B, Picaud S, Mailley P, Bergonzo P. Multichannel Boron Doped Nanocrystalline Diamond Ultramicroelectrode Arrays: Design, Fabrication and Characterization. Sensors. 2012; 12(6):7669-7681.
Kiran, Raphael; Rousseau, Lionel; Lissorgues, Gaëlle; Scorsone, Emmanuel; Bongrain, Alexandre; Yvert, Blaise; Picaud, Serge; Mailley, Pascal; Bergonzo, Philippe. 2012. "Multichannel Boron Doped Nanocrystalline Diamond Ultramicroelectrode Arrays: Design, Fabrication and Characterization." Sensors 12, no. 6: 7669-7681.